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Science 7 First Semester Revision

Total questions: 115

Worksheet time: 58mins

Name
Class
Date
1.

What is this measuring instrument called?

a)

Bunsen Burner

b)

Pipette

c)

Measuring Cylinder

d)

Beaker

2.

What does this Hazard Symbol mean?

a)

Corrosive

b)

Flammable

c)

Explosive

d)

Toxic

3.

What does this Hazard Symbol mean?

a)

Flammable

b)

Oxidising

c)

Serious Health Hazard

d)

Corrosive

4.

Plants create their own food through a process known as

a)

Protein synthesis

b)

Photosynthesis

c)

Autotrophic form of nutrition

5.

When a solid becomes a liquid, the process is called

a)

Freezing

b)

Melting

c)

Condensation

d)

Evaporation

6.

The energy from moving objects, is known as

a)

Potentail Energy

b)

Kinetic Energy

c)

Heat Energy

d)

Sound Energy

7.

In science, Force is DEFINED as...

a)

A push or pull

b)

A hop, skip and jump

c)

A push, pull or twist

d)

What gives a Jedi his power

8.

Which of the following is a contact force?

a)

Magnetic

b)

Friction

c)

Electrical

d)

Gravitational

9.

Given this arrangement of magnets, in which case/s would the magnets REPEL each other?

a)

B only

b)

B and C

c)

A and C

d)

A only

10.

Are the forces exerted by the cats balanced or unbalanced?

a)

Balanced

b)

Unbalanced

11.

What type of force is needed to unlock a door?

a)

Pull

b)

Push

c)

Twist

d)

Jump

12.

The ability to do work is ____.

a)

Force

b)

Energy

c)

Sound

d)

Power

13.

Energy from sunlight is called ___.

a)

Mechanical energy

b)

Power energy

c)

Solar energy

14.

A magnet attracts ___ objects.

a)

Metal

b)

Wood

c)

Paper

d)

Leather

15.
What are the three states of matter?
a)
Rock, Brick, Shoe
b)
Solid, Liquid, Gas
c)
Liquid, Water, Soda
d)
Rain, Sleet, Snow
16.
When water vapor gets cold, it turns to a...
a)
liquid
b)
solid
c)
raindrop
d)
ice
17.
What state of matter does this picture show?
a)
Liquid
b)
Gas
c)
Solid
d)
Matter
18.
What state of matter does this picture show?
a)
Gas
b)
Solid
c)
Matter
d)
Liquid
19.
What is anything that takes up space and has mass?
a)
Mass
b)
Volume
c)
Melting
d)
Matter
20.
When you heat water it turns into a ____
a)
liquid
b)
water
c)
gas
d)
solid
21.
The amount of space a liquid takes up is ________
a)
Volume
b)
Matter
c)
Solid
d)
Liquid
22.

State of matter with a definite shape and definite volume.

a)

solid

b)

liquid

c)

gas

23.

What happens to particles when their temperature increases?

a)

The particles move slower

b)

The particles move faster

c)

The particles lose mass

d)

The particles gain mass

24.
Freezing
a)
Solid to gas
b)
Liquid to solid
c)
Gas to solid
d)
Liquid to gas
25.
Boiling
a)
liquid to gas
b)
gas to solid
c)
gas to liquid
d)
solid to liquid
26.
Which state of matter has tightly packed molecules?
a)
solid
b)
liquid
c)
gas
27.
Which state of matter has a definite shape?
a)
solid
b)
liquid
c)
gas
28.
What is happening when my ice cream changes from a solid to a liquid?
a)
freezing
b)
melting
c)
burning
d)
evaporation
29.
Define a liquid.
a)
Indefinite shape, indefinite volume
b)
Definite shape, definite volume
c)
Found in stars
d)
Definite volume, indefinite shape
30.
What term describes a solid changing to a gas?
a)
Deposition
b)
Sublimation
c)
Evaporation
d)
Freezing
31.
The speed of the molecules determines the _____.
a)
volume
b)
density
c)
pressure
d)
temperature
32.
What is condensation?
a)
gas to solid
b)
gas to liquid
c)
liquid to solid 
d)
solid to liquid 
33.
Thermal energy is...
a)
heat energy.
b)
the energy of motion
c)
energy of nuclear processes.
d)
an indication of physical change.
34.
A chemical change
a)
doesn't really change much.
b)
creates a new substance
c)
is a change in the state of matter
35.

Which state of matter does this picture show?

a)

Solid

b)

Liquid

c)

Gas

36.

What state of matter does this picture show?

a)

Solid

b)

Liquid

c)

Gas

37.

Which state of matter does this picture show?

a)

Solid

b)

Liquid

c)

Gas

38.

What is happening in this picture of water boiling?

a)

Molecules are speeding up

b)

Molecules are slowing down

39.

What is happening in this picture of this lake freezing?

a)

Molecules are speeding up

b)

Molecules are slowing down

40.

Transparent and brittle

a)

Metal

b)

Sponge

c)

Glass

d)

Plastic

41.

Shiny and conducts electricity

a)

Meetal

b)

Polythene

c)

Rubber

d)

Metal

42.

Flexible and elastic and a opaque

a)

Fabric

b)

Tissue paper

c)

Rubber

d)

Wood

43.

Soft and a good thermal insulator

a)

Fabric/cotton/sponge

b)

Rubber/metal/tissue

c)

Wood/polythene/plastic

44.

Hard and attracted to a magnet

a)

Wool

b)

Wood

c)

Metal

d)

Cotton

45.

Dull and an electrical insulator

a)

Iron

b)

Glass

c)

Wood

d)

Paper

46.

Weak and absorbent

a)

Fabric /faabrick

b)

Paper /tissue paper

c)

Polythene/plastic

d)

None of theme

47.

Waterproof material

a)

Plastic

b)

Wood

c)

Fabric

d)

Paper

48.
The ability of a material to withstand a force without breaking or bending
a)
durability
b)
hardness
c)
toughness
d)
strength
49.
The ability of a material to conduct heat or electrical energy
a)
conductivity
b)
ductility
c)
malleability
d)
fusibility
50.

. ........ is formed when iron reacts with oxygen in the air

a)

iroxy

b)

rust

c)

crumble

d)

substances

51.

from this experiment, we can conclude that rusting need

a)

oxygen

b)

oil

c)

water

d)

oxygen and water

52.

What do you call the dye that changes into a different color depending on whether it is an acid or base?

a)

crayon

b)

indicator

c)

paint

d)

pH

53.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
54.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
55.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
56.

What does pH measure?

a)

the amount of hydrogen (H+) ions

b)

the amount of hydroxide (OH-) ions

c)

amount of water

d)

all of the above

57.

Which of the following is the strongest acid?

a)

1

b)

5

c)

3

d)

8

58.

Which of the following is a characteristic of an acid?

a)

bitter

b)

slippery

c)

sour

d)

releases hydroxide ions in water

59.

Which of the following is a characteristic of an alkali?

a)

bitter

b)

sour

c)

corrosive

d)

releases hydrogen ions in water

60.

Which of the following is the strongest alkali?

a)

4

b)

14

c)

7

d)

15

61.

Neutralisation is a reaction between

a)

Acid and base

b)

Acid and a neutral substance.

c)

Two acids

d)

Two bases

62.
What mineral is used for pencils?
a)
Graphite
b)
Galena
c)
Magnetite
d)
Quartz
63.
How do you test the hardness of a mineral? 
a)
Throw it against a wall
b)
Step on it
c)
Scratch Test
d)
Kick it until it breaks
64.
A mineral's resistance to being scratched is called?
a)
streak
b)
luster
c)
hardness
d)
heft
65.
What are the 3 major types of rocks?
a)
Igneous, Metamorphic, Sedimentary
b)
Metamorphic, Igneous, Cementation
c)
Brown, Red, Gray
d)
Streak, Hardness, Breakage
66.
Wind, water, and ice breaking down rock is called
a)
Erosion
b)
Deposition
c)
Compaction
d)
Weathering
67.
This rock was formed by smaller pieces of rock that settled at the bottom of a lake millions of years ago. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
68.
What is molten or liquid rock material that is deep beneath the Earth's surface?
a)
grain
b)
lava
c)
magma
d)
rock
69.
What is molten rock that erupts onto or above the Earth’s surface?
a)
grain
b)
lava
c)
magma
d)
sediment
70.
Each rock type can follow only one pathway of the rock cycle.
a)
True
b)
False
71.
The process by which metamorphic rocks are formed...
a)
heat and pressure
b)
erosion and deposition
c)
melting and cooling
72.

Which of the following lists Earth's compositional layers starting with Earth's center and ending with the outermost layer.

a)

mantle, crust, core

b)

crust, mantle, core

c)

crust, core, mantle

d)

core, mantle, crust.

73.
Which physical layer is the thinnest?
a)
crust
b)
mantle
c)
core
74.
What are the two types of crust?
a)
top crust,bottom crust
b)
oceanic crust, continental crust
c)
water,land
d)
none of the above 
75.

Gravity is a:

a)

contact force

b)

non-contact force

76.

Identify a contact force from the following:

a)

Magnetic

b)

Gravity

c)

Friction

77.

When a car stops suddenly, passengers continue moving forward.

a)

True

b)

False

78.

What term is missing?


Friction acts in the ______ direction as an object's motion.

a)

same

b)

opposite

c)

perpendicular

79.

Named after the famous scientist, I am the unit for measuring Force

a)

Tesla

b)

Newton

c)

Neutron

d)

Sheldon

80.

Which of the forces in this image is the smallest?

a)

A

b)

B

c)

C

d)

D

e)

E

81.

The girl's hair is attracted to the balloons because of which force?

a)

Electrostatic

b)

Magnetic

c)

Friction

d)

Buoyancy

82.

In this force diagram, which way will the van move?

a)

Upward

b)

To the left

c)

To the right

d)

Downward

83.
Name the 2 factors that affect acceleration of an object
a)
velocity and time
b)
distance and time
c)
mass and force
d)
mass and time
84.

Which point has the most potential energy?

a)

G

b)

F

c)

B

d)

A

85.
You and your friend, are playing tug of war. Your friend pulls with a force of 55 N, to the rights. You pull with a force of 65 N, to the left. What is the net force on the rope?
a)
10 n, to the left
b)
20 N
c)
10 N, to the left
d)
10 N, to the right
86.

Energy that comes from moving charged particles

a)

gravitational potential energy

b)

nuclear energy

c)

electrical current

d)

sound energy

87.

Energy sources from derived from the remains of living organisms - includes oil, gas, and coal

a)

thermal energy

b)

renewable resource

c)

sound

d)

fossil fuel

88.

The gradual warming of Earth's climate

a)

fossil fuel

b)

ozone depletion

c)

global warming

d)

carbon footprint

89.

Stored energy that exists based on the position of an object

a)

gravitational potential energy

b)

kinetic energy

c)

solar energy

d)

chemical energy

90.

There is a limited supply, because they do not have the ability to be quickly replenished

a)

renewable resource

b)

nonrenewable resource

c)

wind power

d)

solar power

91.

Resources that are produced all the time, so they will not run out

a)

crude oil

b)

natural gas

c)

nonrenewable resource

d)

renewable resource

92.

Energy vibrating materials or air molecules

a)

electromagnetic waves

b)

nuclear energy

c)

sound

d)

light

93.

The energy of moving particles. As an object heats up, particles move faster and it increases

a)

thermal energy

b)

little energy

c)

mass energy

d)

potential energy

94.

A principle stating that energy cannot be created or destroyed.

a)

law of conservation of mass

b)

law of conservation of energy

c)

law of energy transformation

d)

law of energy principles

95.

What is considered the source of all energy on our planet?

a)

the moon

b)

gravity

c)

the sun

d)

the atmosphere

96.
Which is the correct order of our planets?
a)
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
b)
Mars, Venus, Earth, Mercury, Jupiter, Saturn, Uranus, Neptune
c)
Neptune, Uranus, Saturn, Jupiter, Mars, Earth, Venus, Mercury
d)
Mercury, Venus, Earth, Mars, Neptune, Saturn, Jupiter, Uranus
97.

What is gravity?

a)

A push or pull on an object

b)

The force of attraction (pull) between two objects

c)

The tendency to keep moving in a straight line

d)

Any object that orbits another object

98.

What is caused by the tilt of Earth's axis?

a)

Months

b)

Years

c)

Seasons

d)

Hours

99.

Why do stars appear to move across Earth's sky each night?

a)

Earth rotates on its axis

b)

The stars orbit each other

c)

Earth revolves around the Sun

d)

The stars rotate with the Moon

100.

What is the Moon to Earth?

a)

Comet

b)

Axis

c)

Satellite

d)

Probe

101.

Why does the moon appear to shine?

a)

It is like a star and gives off light

b)

It refracts light from space

c)

It reflects light from the sun

d)

It absorbs light from the sun

102.

What is the name of the gas/dust clouds that form stars?

a)

Nebulas

b)

Protostars

c)

Supernova

d)

Neutron Star

103.
What is a huge ball of very hot gases in space?
a)
galaxy
b)
equator
c)
star
d)
constellation
104.
A pattern of stars, named after mythological or religious figure, an object, or an animal
a)
galaxy
b)
star
c)
constellation 
d)
planet
105.
The path one body takes in space as it revolves around another
a)
universe
b)
orbit
c)
refraction
d)
moon
106.

Cells are the building blocks of:

a)

living things

b)

matter

c)

energy

d)

rocks

107.

The process by which plant cells produce glucose is:

a)

photosynthesis

b)

respiration

c)

protein synthesis

d)

diffusion

108.

Genetic material is located here

a)

Mitochondria

b)

Vacuole

c)

Nucleus

d)

Cytoplasm

109.

Which characteristic is shown in the image?

a)

Organisms grow and develop

b)

Organisms react to stimuli

c)

Organisms can adapt

d)

Organisms use and obtain energy

e)

Organisms are made up of cells

110.

Which characteristic is shown in the image?

a)

Organisms reproduce

b)

Organisms react to stimuli

c)

Organisms can adapt

d)

Organisms use and obtain energy

e)

Organisms are made up of cells

111.
What is ecology?
a)
The study of living things.
b)
The study of animals and plants.
c)
The study of living and nonliving things.
d)
The study of how organisms interact with their environment.
112.
An environment that provides the things a specific organism needs to live, grow, and reproduce is its ________.
a)
ecosystem
b)
community
c)
habitat
d)
population
113.
what needs of an organism are provided by its habitat
a)
organism
b)
population
c)
food, shelter, water
d)
species
114.
The community of organisms that live in a particular area along with the non-living surroundings as well...
a)
Population
b)
Community
c)
Ecosystem
115.
What are the biotic factors in this image?
a)
sunlight, elephants, and grasses
b)
sunlight, water,  and air
c)
elephants, plants, trees 

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