Free Printable Physical Science unit review

Free Printable Worksheets

Worksheets

Physical Science unit review

Total questions: 51

Worksheet time: 37mins

Name

Class

Date

1.

A physical change...

a)

changes the physical properties of an object, but does not create a new substance.

b)

creates a new substance and cannot be undone.

2.

A chemical change

a)

changes the physical properties of an object, but does not create a new substance.

b)

creates a new substance and cannot be undone.

3.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

4.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

5.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

6.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

7.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

8.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

9.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

10.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

11.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

12.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

13.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

14.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

15.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

16.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

17.

Is milk going sour a physical or chemical change?

a)

Physical

b)

Chemical

18.

Electricity happens with the flow of

a)

electrons

b)

water

c)

sand

19.

What's one example of a powerful electrical charge?

a)

lightening

b)

fire

c)

tornado

d)

flashlight

20.

Electrons have a ______ charge.

a)

Positive

b)

Negative

c)

Neutral

21.

When you get shocked by touching a doorknob, that's an example of ___________________.

a)

current electricity

b)

static electricity

22.

Turning on a light in your house is an example of

a)

static electricity

b)

current electricity

23.

Static electricity is when_________________

a)

electrons jump from one thing to another

b)

magic happens

c)

electrons flow through a wire

24.

Current electricity is when_________________

a)

electrons jump from one thing to another

b)

magic happens

c)

electrons flow through a circuit

25.

What would cause two balloons to repel?

a)

one is positive and one is negative

b)

both balloons are positive

c)

both balloons are negative

d)

one balloon is positive and one is neutral

26.

If the balloon has a negative charge, the hair must have what charge?

a)

negative

b)

positive

c)

neutral

27.

Which term means "fixed, stuck, not moving"

a)

current

b)

static

c)

dynamic

d)

electricity

28.

What is the major difference between static electricity and current electricity?

a)

Current electricity involves a continuous flow of neutrons; static electricity is a sudden transfer of protons

b)

Current electricity can be deadly; static electricity is almost always safe

c)

In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons

d)

Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons

29.

Which of these best completes the circuit?

a)

rubber band

b)

metal nail

c)

leather shoelace

d)

wooden toothpick

30.

Electrical lights will not come on unless their electrical circuit is a --

a)

parallel circuit

b)

series circuit

c)

closed circuit

d)

short circuit

31.

The electrician in this picture is wearing rubber gloves for protection. The purpose of the rubber gloves is to --

a)

keep the electrician dry

b)

create an electrical circuit

c)

produce electricity

d)

protect the electrician

32.

Which of these substances conducts electricity the best?

a)

wood

b)

brick

c)

copper

d)

plastic

33.

What material would be safest to use as an insulator to cover electrical wires?

a)

rubber

b)

tin

c)

aluminum

d)

water

34.

This instrument can be used to see if materials conduct electricity. Which of these groups contains items that could all conduct electricity to complete the circuit?

a)

rubber ball, plastic comb, nail

b)

paper clip, penny, screw

c)

cork, dollar bill, tweezers

d)

pencil, eraser, spoon

35.

materials that allow electricity to flow through them are called

a)

conductors

b)

current

c)

fuse

d)

resistor

36.

wood is a _____?

a)

conductor

b)

insulator

37.

when the circuit is _____, current does not flow.

a)

open

b)

closed

38.

A student is building a circuit that will convert electrical energy into light energy. What materials does the student need to complete his circuit?

a)

Wire, battery, and bulb

b)

Battery, switch, and wire

c)

Switch, bulb, and battery

d)

Bulb, wire, and switch

39.

What is a switch's function in a circuit?

a)

to make the current hotter or colder

b)

turn on and off the flow of current

c)

the pathway that current flows

d)

to add more power to the circuit

40.

Which statement is true?

a)

All Magnets have a North and South Pole

b)

All magnets can attract large objects

c)

Magnets can not pull through Solids.

d)

All Magnets have the Same shape and Size

41.

Mr. Novales makes a mixture of four solid materials. Which of these 4 materials will a bar magnet be able to pull out?

a)

Rubber

b)

Sand

c)

Sugar

d)

Iron Fillings

42.

The AREA around a magnet where you feel a pulling force.

a)

Gravity

b)

Magnetic Field

c)

Magnetism

43.

In a homemade electromagnet, what must you do to increase the number of paper clips their electromagnet picks up?

a)

make the wire longer

b)

remove the nail from the center of the wire

c)

increase the number of loops of wire around the nail

d)

spread the loops of wire apart on the nail so they do not touch

44.

Donna is attempting to make an electromagnet to pick up old nails in and around her driveway. Which of these materials would be best to use for the core in order to make the strongest electromagnet to pick up the most nails?

a)

iron nail

b)

water

c)

wooden stake

d)

plastic spoon

45.

You rub a balloon on your head and it becomes negatively charged. The balloon will be MOST attracted to ...

a)

a piece of metal.

b)

positively charged hair.

c)

the neutrally charged wall.

d)

another negatively charged balloon.

46.

Which electromagnet would have the most strength?

a)

An electromagnet with 5 coils.

b)

An electromagnet with 10 coils.

c)

An electromagnet with 15 coils.

d)

An electromagnet with 20 coils.

47.

How is an electromagnet different from a bar magnet?

a)

Only a bar magnet has a magnetic field.

b)

Only an electromagnet attracts materials made of iron.

c)

An electromagnet is temporary and is magnetic when a current flows through a wire wrapped around the core.

d)

A bar magnet is a temporary and is only magnetic when a current flows through a wire wrapped around the core.

48.

Michael is playing with two horseshoe magnets. He is trying to get them to touch, but they will not regardless of how hard he tries. Why will the magnets not come in contact?

a)

Magnets always repel other magnets.

b)

Magnets always attract other magnets.

c)

Michael is trying to touch north poles to south poles.

d)

Michael is trying to touch north poles to north poles.

49.

The attracting and repelling forces of magnets are used in countless objects, from refrigerator doors to maglev trains. Refrigerator doors use the attraction of magnets to stay closed, while maglev trains use magnetic repulsion to hover above rails. The center magnet in the picture is hovering between two magnets, making it appear to float. Which best explains how the center magnet is able to hover between two other magnets?

a)

The opposite poles of each magnet are facing each other, so they repel.

b)

The magnets are stacked so that similar poles are facing one another.

c)

The middle magnet is repelling the top magnet while attracting the bottom.

d)

The middle magnet is attracted to the top magnet, but held down by gravity.

50.

Which statement about magnets is correct?

a)

Like poles of magnets repel each other.

b)

Like poles of magnets attract each other.

c)

Opposite poles of magnets repel each other.

d)

Magnets of the same size attract each other.

51.

Susan is making an electromagnet in her science class today. First, she takes a nail and winds coils of copper wire around it. Then, she connects the ends of the wire to a battery. She uses the electromagnet to pick up paper clips, but the paper clips drop when she disconnects the wires from the battery. Which kind of energy does Susan change into magnetic energy in this project?

a)

chemical

b)

electrical

c)

heat

d)

light

Reset

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