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Grade 7 Physical Science Review

Total questions: 70

Worksheet time: 36mins

Name
Class
Date
1.

-the amount of matter in an object

a)

density

b)

mass

c)

weight

d)

time

2.

the amount of space an object takes up

a)

time

b)

weight

c)

density

d)

volume

3.

-the force of gravity on an object

a)

weight

b)

time

c)

force

d)

density

4.

Which phase has definite shape and definite volume?

a)

liquid

b)

mass

c)

solid

d)

gas

5.

Which phase takes the shape of its container?

a)

solid

b)

liquid

c)

gas

6.

Which phase fills all the available space?

a)

liquid

b)

solid

c)

gas

7.

Which phase has the highest energy?

a)

gas

b)

liquid

c)

solid

8.

What is basic unit of metric measurement?

a)

centimeter

b)

kilometer

c)

meter

9.

List units in order from smallest to largest: kilogram, milligram, centigram, gram

(a)  

10.

What is basic metric unit of mass?

a)

centigram

b)

millimeter

c)

gram of kilogram

11.

What is basic metric unit of weight?

a)

newton

b)

pound

c)

liter

d)

gram

12.

What is basic metric unit of volume of liquids?

a)

deciliter

b)

milliliter

c)

liter

13.

Which instrument accurately measures a liquid?

a)

graduated cylinder

b)

rain guage

c)

thermometer

d)

beaker

14.

Which instrument is used to accurately measure mass of an objec?

a)

graduated cylinder

b)

beaker

c)

scale

d)

electronic balance

15.

Which instrument accurately measures the weight of an object?

a)

scale

b)

spring scale

c)

electronic balance

16.

If a ball is equal, the rock with the greater density has the greater ___________.

a)

weight

b)

mass

c)

volume

17.

What process causes water droplets to form on the outside of a glass filled with cold liquid and ice?

a)

evaporation

b)

runoff

c)

condensation

d)

transpiration

18.

What is the process that turns a liquid to a gas?

a)

evaporation

b)

condensation

c)

transpiration

19.

Freezing point of water (celsius)

a)

100

b)

0

c)

32

20.

boiling point of water (Celsius)

a)

100

b)

0

c)

32

21.

Which is NOT an example of physical change

a)

cutting paper

b)

dissolving salt in water

c)

ice melting

d)

milk spoiling

22.

Which is NOT an example of chemical change?

a)

burning wood

b)

rotting food

c)

painting a fence

d)

iron rusting

23.

I saw a drop of paint hit the ground

a)

observation

b)

hypothesis

c)

conclusion

d)

inference

24.

If fertilizer is added, then the plants will grow faster.

a)

hypothesis

b)

problem

c)

materials

d)

observation

25.

I was correct, the steeper the slope, the faster the car rolled.

a)

observation

b)

conclusion

c)

hypothesis

26.

The simplest pure substance with only one kind of atom is _____________

a)

an element

b)

a mixture

c)

a compound

27.

-when 2 or more elements unite chemically

a)

eement

b)

comppound

c)

mixture

28.

-when 2 or more substances are mixed together but not chemically combined

a)

element

b)

compound

c)

mixture

29.

Which is not an element?

a)

salt

b)

hydrogen

c)

carbon

d)

oxygen

30.

Which is a compound?

a)

pizza

b)

oxygen

c)

sugar

d)

hydrogen

31.

How do you separate a mixture of salt and water?

a)

add vinegar

b)

pick out the salt with tweezer

c)

boil out the water

32.

How can you tell if a substance contains iron filings?

a)

Look at substance under a microscope

b)

boil out or evaporate out the iron filings

c)

Use a magnet to attract the iron

33.

Which of the following is considered to be matter?

a)

radiation

b)

magnetism

c)

sunlight

d)

soil

34.

What is the charge of an electron in an atom?

a)

-2

b)

-1

c)

0

35.

Where are protons and neutrons found?

a)

in the electron cloud

b)

air

c)

in the nucleus

36.

-another word for a charged particle

a)

proton

b)

nucleus

c)

ion

37.

What is the pH of an acid?

a)

below 7

b)

below 10

c)

above 2

38.

Acids turn litmus paper ________

a)

brown

b)

pink or red

c)

blue

39.

The pH of a base is ____________.

a)

0

b)

below 7

c)

above 7

40.

An acid reacting with a base to form salt and water is called ______.

a)

neutralization

b)

acidic

c)

basic

41.

What force caused the egg to accelerate when it was dropped?

a)

gravity

b)

speed

c)

momentum

d)

impact

42.

The purpose of the egg container was to _______ the force of impact.

a)

increase

b)

improve

c)

accelerate

d)

diminish

43.

What is the first step in engineering process and scientific method?

a)

draw a conclusion

b)

develop a hypothesis

c)

define the problem

44.

The force of gravity between two objects depends upon mass and ______________.

a)

acceeration

b)

distance

c)

speed

45.

Speed in a specific direction is _______.

a)

friction

b)

force

c)

acceleration

d)

velocity

46.

A force that sends an object into motion

a)

balanced

b)

unbalanced

47.

When an object is moving, the direction of friction is __________________ the motion of the object.

a)

the same

b)

opposite

48.

-pushing a box across the floor

a)

rolling friction

b)

sliding friction

c)

fluid friction

d)

static friction

49.

-A sky diver

a)

fluid friction

b)

rolling friction

c)

static friction

d)

sliding friction

50.

A skateboard

a)

fluid friction

b)

rolling friction

c)

static friction

d)

sliding friction

51.

stored energy is ______ energy

a)

nuclear

b)

chemical

c)

potential

d)

kinetic

52.

x-rays, gamma rays, infrared rays

a)

potential energy

b)

electromagnetic energy

c)

chemical

d)

nuclear

53.

energy of moving objects

a)

kinetic energy

b)

chemical energy

c)

potential energy

d)

nuclear energy

54.

heat from the sun reaches earth through __________.

a)

convection

b)

conduction

c)

radiation

55.

-transfer of energy from direct touch

a)

convection

b)

radiation

c)

conduction

56.

Increase in the amount of greenhouse gasses entering Earth's atmosphere may cause ________________.

a)

global warming

b)

acid rain

c)

ice age

57.

wedge and lever

a)

complex machine

b)

simple machine

c)

alternate energy

58.

another word for an inclined plane

a)

wedge

b)

ramp

c)

pulley

59.

Which travels faster?

a)

light

b)

sound

60.

Which is an alternate energy source?

a)

light

b)

fossil fuel

c)

wind

61.

Which is NOT a fossil fuel?

a)

oil

b)

coal

c)

natural gas

d)

wind

62.

Which two greenhouse gasses contribute to global warming?

a)

carbon dioxide and methane

b)

hydrogen and methane

c)

carbon dioxide and nitrogen

d)

nitrogen and hydrogen

63.

Which energy source is dangerous if leaked?

a)

renewable

b)

electromagnetic

c)

solar

d)

nuclear

64.

Which material is an insulator?

a)

glass

b)

plastic

c)

steel

d)

paper

65.

Energy associated with moving electrical charges is ________________

a)

fossil fuel

b)

magnetism

c)

electricity

66.

Which is considered a good conductor of electricity?

a)

rubber

b)

penny (copper)

c)

pplastic

67.

Waves transport ________.

a)

wind

b)

energy

c)

radiation

d)

convection

68.

Which is NOT electromagnetic energy?

a)

gamma

b)

visible light

c)

ultraviolet

d)

microwave

e)

nuclear

69.

Which EM wave is shortest?

a)

visible light

b)

gamma

c)

infrared

d)

ultraviolet

70.

Which is not a digital device?

a)

thermometer with liquid

b)

cell phone

c)

chromebook

d)

stopwatch used in class

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