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
