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Science/ first term/revision

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منذ 4 سنوات
اجابة  1   مشاهدة  475

                                       Final Revision   

) Choose the right answer:
1.An object of mass 2 kg. is moving at a speed of 4 m/s. has a kinetic energy ....... joules.
a. 16                                 b.64                                            c. 32

 

2.In solar heater, solar energy is converted into .................... energy.
a. light                           b. electric                                      c. heat

 

3.The colour property is a distinguishing factor between ....................
a. Flour-sugar.              b. silver-gold.                               c. oxygen-helium.

 

4.The third energy level is saturated by .................... electrons.
a. 2                                 b. 18                                                 c. 8

 

5.A substance is solid and can't be soften by heating ....................
a. copper.                       b. sulphur.                                     c. aluminum.

 

6.Chemical energy can be stored in ....................
a. car battery.                                        b. raising a load up wards.
c. stretched spring.                               d. car lamps.

 

7.The chemical activity of the element depends on the number of ....................
a. neutrons.                                                                 b. protons.

c. electrons in the outer level.                                 d. levels filled with electrons.
 

8.An element has 2 electrons in the (L) level, so its atomic number is ....................
a. 2                                 b. 4                            c. 6                           d. 8

 

9.All of the following are active elements except ....................
a. 1H                             b. 6C                         c. 7N                         d. 18Ar

 

10.Cooking pans are made up of ....................
a. iron only.                                              b. aluminium only.

c. stainless steel only.                             d. (b) and (c)
 

11.The substances that float on water surface is .... .......... .
a. iron .                 b. cork.                     c. aluminium.                      d. copper.

 

12.The property of electric conduction is distinguishing factor between ....................
a. iron and copper.                                  b. wood and plastic.
c. iron and wood.                                    d. no correct answer.

 

13.An object of 20 N. weight and it is placed at a height of 5 m. , so its potential energy is .................... joules.
a. 50                                b. 150                      c. 100                                      d.200

 

14.If you sit down beside an electric heater, heat is transferred to you by ....................
a. convection.                                b. radiation.           

c. conduction.                             d. convection & radiation.
 

15.Scorpion belongs to ....................
a. insects.                  b. arachnids.                 c. myriapods.                d .mammals.

16.Equal masses of different substances have .................... volumes.
a. different                     b. constant                                c. equal

 

17.When a substance sinks in water, that means its density is .................... the density of
water.
a. equal to                       b. less than                               c. more than

 

18.The .................... matter doesn't take the shape of the container.
a. solid                             b. liquid                                       c. gaseous

 

19.The molecule of oxygen is composed of .................... atom(s).
a. one                             b. two                                            c. three

 

20.The particles which revolve around the nucleus of an atom of element are ...............
a. neutrons.                  b. protons.                                   c. electrons.

 

21..................... are from the animals which don't have a body support.
a. Reptiles                    b. Snails                                      c. Jellyfish

 

22.The number of energy levels in the heaviest atoms is ....................
a. 7                              b. 8                      c. 32                              d. 18

 

23.From inert gases ....................
a. nitrogen.               b. helium.              c. oxygen.                         d. bromine

 

24.Heat transfers from Sun to Earth by ....................
a. convection.                                                 c. conduction.
b. radiation.                                                 d. conduction and convection.

 

25.In car engine, .................... energy of the fuel is changed into heat and mechanical
energy.
a. chemical                        b. electric                          c. light                             d. solar

 

26.Amoeba, euglena and paramecium differ from each other in the ....................
a. number of teeth.                                                       b. number of legs.
c. kind of support.                                                        d . way of movement.

 

27..................... insect exactly looks like the plant branches.
a. Stick                         b. Beetle                     c . Leaf                    d. Locust

 

28..................... is from teethless mammals.
a. Lion                        b. Cow                       c. Lizard                       d. Sloth

 

29..................... is a permanent source of energy.
a. Wind                     b. Fuel           c. Food                       d. The Sun

 

30.Electric energy is converted into sound energy in ....................
a. car battery .               b. car lamps.             c. radio cassette.             d. pendulum.

31.Taste property is a distinguishing factor between ....................
a. copper and iron.                                                    b. vinegar and perfume.

c. salt and sugar.                                                      d. gold and silver.
 

32..................... belongs to the animals with no body support
a. Octopus                  b. Mussel                   c . Hedgehog                    d . Snake

 

33.Dynamo converts mechanical energy into energy ....................
a. electrical                  b. nuclear                  c. solar                         d . chemical

 

34..................... is a permanent source of energy
a. Wind                      b. Coal                       c. The Sun                     d . Water

 

35.Rat has ....................
a. two pairs of incisors in each jaw.                  b. one pair of incisors in each jaw.
c. three pairs of incisors in each jaw.                 d . no correct answer.

 

36.The Sun is ....................
a. resource of permanent energy.                         b. resource of non-permanent energy.
c. not an energy resource.                                       d . (a) and (c).

 

37.In the radio cassette inside the car the ....................
a. electric energy is converted into mechanical energy.
b. light energy is converted into heat energy.
c. electric energy is converted into kinetic energy.
d. electric energy is converted into sound energy.

 

38.Atom symbol of potassium element is ....................
a. Hg               b. Cu                   c. P                       d.K

 

39.Some substances need heat to get soften such as ....................
a. coal.               b. iron.                c. sulphur.               d. rubber.

 

40.Secreting sweat by skin is considered .................... adaptation.
a. structural                                b. functional

c. behavioral                                   d. no correct answer
 

41.An object of 10 N. weight is placed at 5 m. height, it has a potential energy .................
a. 50 joule.             b. 150 joule.               c. 100 joule.              d. 200 joule.

 

42.The handles of cooking pots are made of ....................
a. copper.                 b. aluminium.                c. wood.                  d. iron.

 

43.The role of technological application is represented in ....................
a. using energy resources and converting energy from form to another.
b. creating energy from nothing.
c. storing energy as its form is.
d. illustrating energy forms.

44.Solids have .................... intermolecular force.
a. strong                     b. weak                   c. medium                   d. no correct answer

 

45..................... is an example for plants that reproduce by spores.
a. Pine                    b. Beans                        c. Vougheir                d. Wheat

 

46.From the animals which don't have a body support is ....................
a. snail.                 b.jellyfish.                 c. fish .                      d. cartilaginous fi sh.

 

47.Heat is transferred by convection through ....................
a. liquids only .              b. gases only .             c. solid only.                d. liquids and gases.

 

48.When the atomic number of element equals its mass number, this means that there
is no ....................
a. electrons.              b. protons .              c. neutrons.                                d. nucleus.

 

49.The third energy level in the atom contains .................... electrons.
a.2                             b.18                             c.8                                              d. 32

 

50.The colour property distinguishing factor between ....................
a. flour and table salt.                             b. iron and gold.

c. O2 and CO2 .                                   d. salt and sugar.
 

51.The molecule of gaseous element that consists of one atom is ....................
a. oxygen.                      b. hydrogen.                c. helium.                      d. mercury.

 

52.Heat transfers through liquids by ....................
a. conduction.                                 b. convection.
c. radiation.                                  d. convection and radiation.

 

53.The molecule of ammonia consists of .................... atoms.
a. 2                       b. 6                    c. 4                           d. 1

 

54.In the rodent the number of incisors in the upper jaw is ....................
a. one pair.                   b. two pairs.                  c. three pairs.                      d. none.

 

55.Heat transfers from Sun to Earth by ....................
a. conduction.                 b. convection.               c. radiation.                  d. no answer.

 

56.When the object is throw upward the .................... of object decreases.
a. mass                     b. heat                  c. potential energy                      d. kinetic energy

 

57.Spider belongs to ....................
a. insects.                b. arachnids.                     c. myriapods.                      d. vertebrates

 

58.The number of atoms is equal to the number of elements in .................... molecule.
a. water              b. hydrogen chloride                  c. oxygen                     d . ammonia gas

 

59.The example of living organism that undergoes hibernation is the ....................
a. desert snail.                    b. jerboa.                      c. frog.                      d. all the previous.

 

60.Heat transfer by radiation takes place through ....................
a. liquids only.                                                                            b. gases only.
c. material media and nonmaterial ones.                               d. metals only.

 

61.From the animals that undergo aestivation is ....................
a. rat                        b. jerboa                         c. frog .

 

62.From the plant that reproduce by forming spores ....................
a. pine.                        b. wheat.                     c. voughair.

 

63.Mammal animal that has one pair of incisors in each jaw ....................
a. squirrel.                  b. rabbit.                 c. lion.                 d. no correct answer.

 

64.The nucleus of .................... atom doesn't contain neutrons.
a. neon                     b. hydrogen                    c. oxygen                d . no correct answer

 

65.Heat transfers by .................... through liquid and gas.
a. conduction                   b. convection                    c. radiation        d. no correct answer

 

66..................... is from the animals that make hibernation in winter.
a. Desert snail                        b. Jerboa                            c. Frog

 

67.All of the followings belong to arachnids except ....................
a. locust.                                b. scorpion.                            c. spider.

 

68.The electric lamp changes the .................... energy into light and heat energy.
a. sound                            b. electric                            c. mechanical

 

69.The smell property is a distinguishing factor between ....................
a. iron and gold.                b. wood and plastic.                c. perfume and vinegar.

 

70.The energy level N is saturated by .................... electrons.
a.  8                                    b. 18                                                 c. 32

 

71.The third energy level is saturated by .................... electrons.
a. 2                                 b. 10                              c. 18                        d. 8

 

72.Heating coils are made up of .................... alloy.
a. iron-copper                        b. nickel-iron           c. chrome-copper        d. nickel-chrome

 

73..................... reproduce by forming spores.
a. Vougheir                        b. Pine              c. Bean                    d. Wheat

 

74.Car engine changes at first chemical energy to .................... energy.
a. heat                   b. electric                 c. magnetic                         d. light

 

75.When air heats up its density ....................
a. not change.                    b. increases.               c. decreases.            d. (b) and (c).

 

76.The electron is .................... charged particle.
a. positively                      b. negatively                               c. neutrally

 

77.The number of pairs of scorpion legs is ....................
a. 4                           b.3                                       c. 44

 

78.An object of weight 6 newton, moved to a height 5 m, its potential energy is ...............
a. 30                                  b. 75                                         c. 11

 

79.................... is the monoatomic liquid molecule.
a. Bromine                         b. Mercury                          c. Iodine

 

80..................... is an example of plants that reproduce by seeds.
a. Adiantum                                 b. Vougheir                               c. Bean

 

81.By increasing the kinetic energy of particles, their .................... increases.
a. weight                                    b. temperature                               c. volume

 

82.The electric energy is converted into kinetic energy in ....................
a. electric lamp.                         b. electric fan.                                c. electric heater.

 

83..................... bird migrates in winter.
a. Quail                                    b. Duck                                                 c. Sparrow

 

84.In the solar cell. the solar energy is converted into .................... energy.
a. kinetic                                  b. light                     c. electric           d . heat

 

85.Distance among molecules are very small in ....................
a. water.                               
b. copper.                       c hydrogen.                  d . oil.

 

86.Birds migration represents .................... adaptation.
a. anatomical                       b. functional               c. structural                d. behavioral

 

87.The number of electrons that saturates the level (K) is ....................
a.8                                    b.2                                       c.32

 

88.Dynamo converts mechanical energy into .................... energy.
a. electric                         b. nuclear                                 c. solar

 

89.The Sun is a .................... source of energy.
a. non-renewable              b. renewable              c. permanent           d. all the previous

 

90.The density of petroleum oil is .................... that of water.
a. less than                b. more than                      c. equal to              d. no correct answer

 

91.Insectivorous plants cannot absorb the nitrogenous substances to make ....................
a. carbohydrates.                 b. proteins.                    c. fats.                   d. vitamins.

 

92.Secretion of poison in some snakes is an example of .................... adaptation.
a. structural            b. behavioral                   c. functional                 d. all of them

 

93.Positive charged particles in the nucleus of atom are ....................
a. neutrons.               b. protons.                                  c. electrons.

 

94.Potassium is symbolized by ....................
a.P                             b. K                              c. B

 

95.From gymnosperms plants: ....................
a. wheat.                       b. pine plant.                         c. maize.

 

96.Density measuring unit ....................
a.cm3.                      b. gm.                              c. gm./cm3

 

97.Heat is transferred by radiation through ....................
a. liquids only.                 b. gases only.              c. material media and non-material ones.

 

98.The monoatomic liquid is ....................
a. Hg                       b. Ag                c. Mg                                   d.Br

 

99.The rule which is used to find the electronic configuration for the first four energy
levels is ....................
a. 22n                        b. 2n2                       c. 2n                      d. n2

 

100.An object of mass 1 kg moves at speed 4 m/s., so it has a kinetic energy= ........ joule.
a. 16                          b. 8                            c.64                                   d.4

 

101.The scorpion belongs to ....................
a. insect.                                b. myriapods.                  c. arachnids.           d. mammals.

 

102.Heat transfers from heater by ....................
a. conduction and radiation.                                    b. radiation and convection.
c. conduction and convection.                                   d. radiation only.

 

103.As doubling height to which an object is raised from ground. so the ....................
a. kinetic energy is increased to its double value.
b. potential energy is increased to 3 times.
c. potential energy is increased to its double value.
d. mechanical energy is increased to 4 times.

 

104.Energy is neither created nor destroyed, but it can be transformed into another
form of energy. this law is known as law of ....................
a. conservation of energy. b. conservation of matter.
c. kinetic energy. d. Earth’s gravity.

 

105.The symbol which represents silver element is....................
a. S                     b. Si                       c .Au                           d. Ag

emy
منذ 4 سنوات
اجابة  1   مشاهدة  209

Final Revision

(1) Write the scientific term :
1) Imaginary places in which electrons can move according to their energies.                                                                                                                               (……….....…………...…. )
2)The way by which the heat is transferred throw gasses and liquids.
                                                                                                         ( ……………………………. )
3) An example of animal with external support.                        ( ……………………………. )
4) The sum of potential energy and kinetic energy.                   ( ……………………………. )
5) The basic classification unit of living organisms.                   ( ……………………………. )
6) The result of combination between two or more atoms of different elements with constant weight ratios.                                                                ( ……………………………. )
7) The gases that do not take part in the chemical reaction. ( ……………………………. )
8) The stored energy in an object due to the work done on it. ( ……………………………. )
9) It is the temperature at which a substance begins to change from a liquid state into a gaseous state.                                                                             ( ……………………………. )
10) It is a form of energy which transfers from a higher temperature object to a lower temperature object.                                                                     ( ……………………………. )
11) Animals have one pair of incisors in each jaw.                   ( ……………………………. )
12) It is the amount of energy lost or gained by an electron when it transfers from one energy level to another.                                                              ( ……………………………. )
13) The pollution produced from the networks of wireless transmitters of cellular phones.                                                                                       ( ……………………………. )
14) The measuring unit of energy                                           ( ……………………………. )
15) The positively charges particles in the nucleus of an atom. ( ……………………………. )
16) The spaces that found among the molecules.                    ( ……………………………. )
17) The modification in the behavior of a living organism at specific
times of the day or year.                                                              ( ……………………………. )

18) The branch of biology that searches for the similarities and differences among living organisms                                                                        ( ……………………………. )
19) A group of animals that have one pair of incisors in each jaw.(………………………. )
20) Energy is neither created nor destroyed, but it is converted from one form to another.                                                                                          ( ……………………………. )
21) The temperature at which matter starts to change from solid to liquid.
                                                                                                       ( ……………………………. )
22) Ability to do work or to make a change.                            ( ……………………………. )
23) The ability of some living organisms to be hidden from enemies or to capture the prey                                                                                               ( ……………………………. )
24)The limited amount of energy needed or loss to transfer an electron from an energy level to another.                                                                            ( ……………………………. )
25) The process by which some animals hide in burrows to overcome low temperature.
                                                                                                         ( ……………………………. )
26) The temperature at which a matter begin to change from the liquid state to gaseous state.                                                                                ( ……………………………. )
27) It is a basic classification unit for living organism.              ( ……………………………. )
28) A modification in a living organism or its body structure or even the biological function of its organs to become more adapted to the environmental conditions where it lives in.                                                                                        ( ……………………………. )
29) The temperature at which matter changes from a solid phase into a liquid one.
                                                                                                         ( ……………………………. )
30)The simplest pure form of a matter which can't be analyzed simpler.
                                                                                                        ( ……………………………. )
31) The heat state of an object on which the transfer of heat from or to the object depends                                                                                        ( ……………………………. )
32) The ability of some body organs and tissues to do a certain function .
                                                                                                         ( ……………………………. )
33) A group of animals that have three pairs of jointed legs. ( ……………………………. )
34) The fundamental building unit of matter that can take part in the
chemical reaction.                                                                      ( ……………………………. )
35) Energy gained or lost to transfer an electron from one energy level to another.                                                                                                              ( ……………………………. )
36) Number of positive protons in nucleus of the atom.        ( ……………………………. )

37) Energy stored in the object due to the work done on the object. (……………………. )
38) Plants can't be distinguished into roots, stems and leaves. ( ……………………………. )
39) The mass of unit volume of the substances.                          ( ……………………………. )
40) Sum of protons and neutrons in a nucleus.                           ( ……………………………. )
41) The work done during the motion of an object.                   ( ……………………………. )
42) The simplest pure substance that could not analyzed into simplerform.                                                                                                                            ( ……………………………. )
43) The fundamental unit for natural classifying system in living organisms.
                                                                                                     ( ……………………………. )
44) It is a permanent resource of energy.                                ( ……………………………. )
45) An amount of energy that gained or lost to transfer an electron from one energy level to another.                                                                         ( ……………………………. )
46) The way of transferring the heat through solids.               ( ……………………………. )
47) The sum of potential and kinetic energies of a body.        ( …………………………. )
48) A group of terrestrial plants that reproduce by formation spores.(…………………. )
49)Invertebrates that are characterized by having number of jointedlegs.
                                                                                                          ( ………………………. )
50)Energy is neither created nor destroyed, but it is converted from one form to another.                                                                                        ( ………………………. )
51) The smallest part of matter that can exist freely having the properties of matter.
                                                                                                       ( ……………………………. )
52) The monoatomic liquid.                                                        ( ……………………………. )
53) The atom that gains a quantum of energy.                        ( ……………………………. )
54) A device changes solar energy to electric energy.             ( ……………………………. )
55) The plants which devour insects to get protein.                 ( ……………………………. )
56) A modification in behavior , structure , biological function of a living organism's organs .                                                                                      ( ……………………………. )
57) The spaces between molecules.                                        ( ……………………………. )

58) The smallest building unit of matter which can exist freely. ( ……………………. )
59) The ability of some living organisms to hide from their enemies. ( …………………. )
60) Pollution produced from the networks of cellular phone. ( ……………………………. )
61)The sum of positive protons and neutral neutrons in the nucleusof atom.
                                                                                                   ( ……………………………. )
62) Volume measuring unit.                                                    ( ……………………………. )
63) Plants that can't be distinguished into roots, stems and leaves. ( ……………………. )
64) The type of adaptation when birds migrate from one place to another.                                                                                                                                    (…….........……………. )
65) the transfer of heat from hot object to another without any need for a material medium through which heat transfers.                                        ( ……………………………. )
66) A group of similar living organisms in shape that can reproduce to give birth of new fertile individuals.                                                                  ( ……………………………. )
67) A liquid used to keep sodium and potassium metals from air. ( ………………………. )
68) It is the ability to do work or to make a change.                  ( ……………………………. )
69) The matter which doesn't take the shape of the container. ( ……………………………. )
70) Amount of energy which an electron loses or gains to transfer from an energy level into another one .                                                                           ( ……………………………. )
71) The result of combination between two or more different elements with constant weight ratios.                                                                              ( ……………………………. )
72) Mass measuring unit.                                                          ( ……………………………. )
73) An alloy which is used in making heating coils .              ( ……………………………. )
74) It is the heat condition which determines whether heat transfers from or to an object when it comes in contact with another.                   ( ……………………………. )
75) Energy stored in the object due to the work done on the object.

                                                                                                       ( ……………………………. )
76) It is the mass of unit volume of the substance.                   ( ……………………………. )