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Unit 2

Total questions: 72

Worksheet time: 6hrs 0mins

Name
Class
Date
1.
The type of energy that allows us to hear is
a)
Mechanical
b)
Sound
c)
Light
d)
Electric
2.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
3.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
4.
Which type of energy is formed by vibrating objects?
a)
thermal energy
b)
electrical energy
c)
sound energy
d)
light energy
5.
What is an example of light energy?
a)
A bird chirping
b)
The sun 
c)
A girl running
d)
An oven
6.
What is an example of thermal energy?
a)
A can
b)
A heater 
c)
A bed
d)
A girl
7.
Which type of energy is produced when the handle of a pencil sharpener turns?
a)
Light Energy
b)
Magnetic Energy
c)
Electrical Energy
d)
Mechanical Energy
8.
What is mechanical energy?
a)
The energy of movement
b)
The energy of making things warmer
c)
The energy that is stored in an object
d)
The energy that comes from electricity
9.
Which of the following is a way thermal energy is used at school every day?
a)
Cooking food for lunch
b)
Writing with a pencil
c)
Looking in a mirror
d)
Turning on the lights
10.

The Sun produces

a)

light and thermal energy

b)

sound and light energy

c)

heat and sound energy

d)

electrical and red bull energy

11.
Which of the following does NOT produce light energy?
a)
car
b)
phone
c)
picture frame
d)
computer
12.
How is light energy different than sound energy?
a)
Light energy moves slower.
b)
Light energy is what you see and sound energy is what you hear.
c)
Light energy uses vibrations and sound energy does not.
d)
Light energy is in a cell phone and sound energy is not.
13.
What object can change electrical energy into light energy?
a)
A candle
b)
A fire
c)
A lamp
d)
A radio
14.

What energy form is being used for the boy to eat?

a)

Mechanical

b)

Thermal

c)

Light

d)

Sound

15.

What energy form is being used for the concert?

a)

Sound

b)

Light

c)

Electrical

16.

What type of energy is needed talk to a friend?

a)

Light and Mechanical

b)

Sound and Thermal

c)

Mechanical and Sound

d)

Mechanical and Thermal

17.

A flashlight uses what type of energy to help you see in the dark?

a)

Mechanical

b)

Sound

c)

Light

d)

Thermal

18.

When I bake cookies, what types of energy do I need to use?

a)

Electrical, Thermal, Light

b)

Thermal, Electrical

c)

Sound, Light, Mechanical

19.
What is the difference between refraction and reflection? 
a)
light bends when it is reflected and bounces off when it is refreacted
b)
light bounces off when it is reflected and bends when it is refracted
c)
light travels in curved lines when it is reflected and straight lines when it is refreacted
d)
when light is refracted it no longer travels 
20.
Daniel has chores to do around the house.  I which of his chores does he use thermal energy? 
a)
Cook eggs for breakfast
b)
oil a squeaky door hinge
c)
sweep the back porch 
d)
dig weeds in the garden 
21.
Which statement correctly explains why you see the bear upside sown in the picture? 
a)
light is refracted by the water, creating an image of the bear
b)
light is absorbed by the mirror, creating the image of the bear
c)
light is being reflected by the water, creating and image of the bear
d)
light is conducted by the water creating an image of the bear
22.
Energy that travels in a straight line.
a)
thermal
b)
light
c)
sound
d)
mechanical 
23.
Why is it appropriate to use plastic or rubber as materials to cover electric plugs ans outlets?
a)
these forms of matter conduct electrical energy
b)
these forms of matter insulate electrical energy
c)
these forms of matter produce electrical energy
d)
these forms of matter produce light and heat energy
24.
What do a camera, magnifying glass, and a glasses have in common? 
a)
they reflect light 
b)
they refract light 
c)
they are conductors
d)
they make things smaller
25.
Why dose the straw look bent? 
a)
the light is traslucent
b)
the light is being reflected
c)
the light is being refracted
d)
the straw is opaque
26.
What type of energy is generated when a doorbell rings? 
a)
Light
b)
Thermal
c)
Sound
d)
Solar
27.
Light bending as it passes from one medium (object) to another is...
a)
Refraction
b)
Reflection
28.
Light bouncing off a mirror is an example of...
a)
Refraction
b)
Reflection
29.
A prism separating white light is an example of...
a)
Refraction
b)
Reflection
30.
It's called _______ when light bounces off the smooth surface of an object.
a)
Refraction
b)
Reflection
31.
Light bending as it passes through a rain drop is an example of...
a)
Refraction
b)
Reflection
32.
This is an example of ...............
a)
refraction
b)
reflection
33.
This is an example of ..............
a)
Refraction
b)
Reflection
34.

When light passes from air to water, what happens to the speed of the light?

a)

speeds up

b)

slows down

c)

stays the same

35.

What do we call a material that light can travel through?

a)

air

b)

water

c)

medium

d)

pathway

36.
a)
Reflection
b)
Refraction
37.
a)
Reflection
b)
Refraction
38.
a)
Reflection
b)
Refraction
39.
a)
Reflection
b)
Refraction
40.
a)
Reflection
b)
Refraction
41.
When all parts of the circuit are connected it is a ______ circuit. 
a)
open
b)
closed
42.
When you flip a light switch on and off you are closing and opening a circuit.
a)
true
b)
false
43.

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 electric current

c)

the pathway that current flows

d)

to add more power to the circuit

44.
Which of these objects is an insulator?
a)
Copper Wire
b)
Paper Clip
c)
Steel Pole
d)
Rubber Gloves
45.
Would would best complete this circuit?
a)
A wire
b)
A switch
c)
A battery
d)
A light bulb
46.
Which of these best completes the circuit?
a)
rubber band
b)
metal nail
c)
leather shoelace
d)
wooden toothpick
47.
Look at the picture.  Why won't the light bulb light up?
a)
The wires from the light bulb are not connected to the battery
b)
The switch is not closed to form a complete circuit 
c)
The wires from the light bulb are not connected to the switch 
d)
The wires from the battery are not connected to the switch 
48.
Look at the picture.  What causes the light bulb not to light up?
a)
The wires from the second light bulb are not connected to the battery
b)
The wires are not connected between the light bulbs 
c)
The wires are not connected to both sides of the first light bulb
d)
The wires are too long to complete the circuit 
49.
Metal is used to make electrical wires because_______.
a)
It allows an electric current to freely flow.
b)
It slows electric currents from flowing.
c)
It is very cheap.
d)
It is very expensive.
50.
A fifth grade class constructed this circuit.  Which of these objects most likely made the light glow when connected to points X and Y?
a)
plastic straw
b)
cotton string
c)
aluminum foil
d)
rubber eraser
51.
A class prepared some electrical circuits using battery, connecting wires, and three light bulbs.  Which of these circuits can make the three bulbs light?
a)
A
b)
B
c)
C
d)
D
52.
What material would be safest to use as an insulator to cover electrical wires?
a)
rubber
b)
tin
c)
aluminum
d)
water
53.
Which of these substances conducts electricity the best?
a)
wood
b)
brick
c)
copper
d)
plastic
54.
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
55.

Which energy transformation most likely occurs in an iron used to press clothes?

a)

electrical energy changes to heat energy

b)

electrical energy changes to sound energy

c)

mechanical energy changes to heat energy

d)

mechanical energy changes to light energy

56.
Which form of energy is being used by the toaster?
a)
chemical
b)
electrical
c)
solar
d)
nuclear
57.

Which light will be brighter and why?

a)

Bulb A because its circuit is closed

b)

Bulb B because its circuit is closed

c)

Bulb B because it has more power

d)

Bulb A because it has less power

58.

Why is electrical wiring usually made from copper?

a)

Because copper is shiny

b)

Because copper conducts electricity

c)

Because copper is not magnetic

d)

Because copper insulate electricity

59.
An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —
a)
Point D to Point C
b)
Point B to Point C
c)
Point A to Point D
d)
Point B to Point D
60.

A material that does NOT let electricity pass through it is called ...

a)

An electrical conductor

b)

An electrical insulator

c)

An electrical source

d)

An electric appliance

61.

Material through which heat or electricity does not easily flow.

a)

Electric Circuit

b)

Electric Current

c)

Conductor

d)

Insulator

62.

Metals

a)

Electric Circuit

b)

Electric Current

c)

Conductor

d)

Insulator

63.

Nonmetals

a)

Electric Circuit

b)

Electric Current

c)

Conductor

d)

Insulator

64.

Plastic, Styrofoam, Wood, Rubber

a)

Electric Circuit

b)

Electric Current

c)

Conductor

d)

Insulator

65.

Aluminum Foil, Paper Clip, Metal Key, Copper Wire

a)

Electric Circuit

b)

Electric Current

c)

Conductor

d)

Insulator

66.

What phrase should be at label 1?

a)

If it is closed, it flows.

b)

If it is open, it is broken.

c)

If it is closed, it is broken.

d)

If it is open, it is flows.

67.

What phrase should be at label 2?

a)

If it is closed, it flows.

b)

If it is open, it is broken.

c)

If it is closed, it is broken.

d)

If it is open, it is flows.

68.

Which description is accurate for the pictures on the top half of the diagram?

a)

The light bulbs will turn on.

b)

Some light bulbs will turn on

c)

The light bulbs will be off.

69.

Which description is accurate for the pictures on the bottom half of the diagram?

a)

The light bulbs will turn on.

b)

Some light bulbs will turn on

c)

The light bulbs will be off.

70.
a)
Circuit is open
b)
Circuit is closed 
c)
circuit has a complete path for electricity to flow
d)
This doesn't have to do with a circuit
71.
What would happen if the switch was opened?
a)
nothing, the light bulbs would still work because there is a complete path
b)
The light bulbs would not work because the path was broken
c)
the battery would loose energy
d)
the wires would be cooled from air
72.
The on switch shows
a)
An open circuit where electricity can flow
b)
A closed circuit that is also called complete
c)
not related to circuits
d)
An incomplete circuit that does not allow electricity to flow

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