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CBA #2 C-H

Total questions: 17

Worksheet time: 55mins

Name
Class
Date
1.
This diagram best represents 
a)
reflection
b)
refraction
c)
absorption
d)
diffusion
2.
How does light travel
a)
It curves around corners
b)
Really slow
c)
In a straight line
d)
In circles
3.
Warm air rises and the cool air sinks.
a)
conduction
b)
convection
c)
radiation
4.

Water flows through turbines in dams like the one shown in the picture. The flowing water makes the turbines spin. What type of energy is used to make the turbines spin in this type of dam? (5.6A)

a)

Light energy

b)

Thermal energy

c)

Sound energy

d)

Mechanical energy

5.

Three different objects that use the same source of energy are shown here. What is the energy source for these objects? (5.6A)

a)

Light energy

b)

Mechanical energy

c)

Sound energy

d)

Electrical energy

6.

A class is learning about states of matter. The teacher shows the students how to set up the investigation shown in the diagram. What kinds of energy are needed in this investigation to change the state of matter of the candle?(5.6A)

a)

Light, mechanical, and thermal

b)

Electrical and thermal

c)

Mechanical, light, and electrical

d)

Thermal and mechanical

7.

Rube Goldberg was an artist who drew cartoons that showed a very complicated way to do a simple task. The picture shows a cartoon like the ones Goldberg drew. Which form of energy is used to turn on the switch? (5.6A)

a)

Light energy

b)

Thermal energy

c)

Electrical energy

d)

Mechanical energy

8.

Many people ride a bicycle for fun and exercise. Some people ride a bicycle to work because it saves money and benefits the environment by reducing the use of fossil fuels. Which of these is not an example of the bicycle using mechanical energy? (5.6A)

a)

The pedals, gears, and chain help turn the wheels.

b)

The wheels turn when the bicycle moves.

c)

The front wheel guides the bicycle as it moves.

d)

The reflector allows the bicycle to be seen at night.

9.

A student made a list of activities that involve energy. Which activities on the list are examples of the use of mechanical energy? (5.6A)

a)

Activities 1, 4, and 6

b)

Activities 2, 4, and 5

c)

Activities 1 and 2

d)

Activities 3, 5, and 6

10.

An old-fashioned metal toy is shown below. When the candle is lit, the carousel of horses begins to turn. Which of these correctly describes the energy that makes the carousel turn? (5.6A)

a)

Heat from the candle produces currents of warm air.

b)

Heat from the candle produces electrical energy.

c)

Light from the candle produces mechanical energy.

d)

Light from the candle produces wind currents.

11.

A student uses a set of headphones to listen to music. Which of these objects uses the same source of energy as the headphones? (5.6A)

a)

A flute using wind energy

b)

A piano using mechanical energy

c)

A keyboard using electrical energy

d)

A teapot using thermal energy

12.

What does the pencil in this picture show about light?

a)

Light is refracted when it hits a curved object.

b)

Light is reflected when it hits a curved object.

c)

Light is refracted when it passes from air into water.

d)

Light is reflected when it passes from air into water.

13.
What surface best reflects light?
a)
dull
b)
shiny
c)
clear
d)
black
14.
a)
Reflection
b)
Refraction
15.
a)
Refraction
b)
Reflection
16.

Which of these describes one thing that could happen if the wire in a car fuse burns out?

a)

The car’s lights will burn brighter.

b)

The car’s radio will not work.

c)

The car’s turn signal will blink too slowly.

d)

The car’s power windows will open faster.

17.

The fish appears to be closer to the surface than it really is. What causes this difference?

a)

Light is reflected.

b)

Light is refracted.

c)

Light is focused

d)

Light is blocked