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light, sound, energy and electricity

Total questions: 60

Worksheet time: 1hrs 1mins

Name
Class
Date
1.
A light year is...
a)
The speed light travels
b)
How long it takes light to get to you from the sun
c)
The distance light can travel in a year
d)
How many years it takes light to be emitted
2.
What does reflection mean?
a)
bending light
b)
bouncing light
3.
What does refraction mean?
a)
bending light
b)
bouncing light
4.
What is this a picture of?
a)
reflection
b)
refraction
5.
Smooth surfaces _______ a lot of light.
a)
reflect
b)
bend
c)
absorb
d)
twist
6.
What is a prism?
a)
a transparent object that separates white light
b)
an opaque object that appears black
c)
a translucent object
7.
Light travels...
a)
A. in ovals
b)
B. in circles
c)
C. in squares
d)
D. in straight lines
8.
What occurs when an object takes in a light wave?
a)
reflection
b)
refraction
c)
absorption
d)
transparent
9.

Law of reflection state that - The angle of incidence is .................. to the angle of reflection.

(La ley de reflexión establece que - El ángulo de incidencia es .................. al ángulo de reflexión.)

a)

equal (igual)

b)

half (mitad)

c)

double (doble)

10.

If the angle of incidence is 20 degrees, what will be the value of the angle of reflection?

(Si el ángulo de incidencia es de 20 grados, ¿cuál será el valor del ángulo de reflexión?)

a)

0

b)

10

c)

20

d)

30

11.

What is the angle of mirror in periscope

a)

35

b)

45

c)

55

d)

65

12.

How many mirrors there are in the periscope?

a)

5

b)

4

c)

3

d)

2

13.
If you want to change the pitch of a sound, you have to change the ___
a)
frequency
b)
amplitude
c)
speed
d)
volume
14.
This is the unit used to measure the volume of a sound. 
a)
Decibel
b)
Medium
c)
Vibration
d)
Oscilloscope
15.
This is what you get when sound waves are reflected, or bounce back, off of a hard surface.
a)
Amplitude
b)
Pitch
c)
Volume
d)
Echo
16.
What is a pitch?
a)
highness or lowness of a sound
b)
the intensity of a vibration
c)
the amplitude of the sound wave
d)
volume of sound
17.
When a sound is louder what measurement gets bigger?
a)
Frequency 
b)
Amplitude 
c)
Wavelength 
d)
Crest
18.
Why is the school library covered with carpet?
a)
So everyone can make a lot of noise
b)
to help absorb sounds to keep it quiet
c)
because it looks good
d)
to help absorb sounds so it can stay noisy
19.
The term for how high or low a sound is:
a)
pitch
b)
volume
c)
sound
d)
medium
20.
If the distance represented by the letter A (the amplitude) were increased, how would it change the sound?
a)
The sound would be higher. 
b)
The sound would be lower. 
c)
The sound would be softer. 
d)
The sound would be louder. 
21.
What is changed in the second picture?
a)
Someone is talking louder in picture 2
b)
Someone is talking softer in picture 2
c)
Someone is talking lower pitch in picture 2
d)
Someone is talking higher pitch in picture 2
22.

a natural non renewable fuel such as coal, oil, or natural gas formed over a very long time in the geological past from the remains of living organisms

a)

fossil fuel

b)

hydropower

c)

geothermal

d)

wind

23.

an energy resource that takes millions of years to form from the remains of plants and animals, such a coal, oil, and natural gas

a)

nonrenewable

b)

renewable

24.

a hard, black, solid fuel formed from the remains of plants over millions of years and extracted from the ground

a)

coal

b)

petroleum

c)

natural gas

d)

biomass

25.

An object that is moving has

a)

chemical energy

b)

chemical energy

c)

potential energy

d)

kinetic energy

e)

elastic energy

26.

Which letter shows the ball when it has THE MOST potential energy?

a)

A

b)

B

c)

C

d)

F

e)

G

27.

Which letter shows the ball when it has NO potential energy?

a)

B

b)

C

c)

D

d)

E

e)

F

28.

The Law of Conservation of Energy states:

a)

Energy can created or destroyed but not transformed

b)

Energy cannot be created or destroyed, it can only transformed

c)

Energy can't be created, destroyed or transformed

d)

Energy cannot be created or destroyed.

29.

What force causes a roller coaster cart to slow down the most?

a)

friction

b)

weight

c)

gravity

d)

air resistance

30.

A toy car down a ramp loses most of its energy to

a)

friction

b)

sound

c)

heat

d)

gravity

31.
Energy can be created.
a)
True
b)
False
32.
Energy cannot be destroyed.
a)
True 
b)
False
33.
When something is dropped, what type of energy transfer takes place?
a)
Kinetic -> Potential
b)
Gravitational Potential -> Kinetic -> Sound
c)
Electrical -> Chemical
d)
Heat -> Nuclear
34.
Imagine dropping a basketball. When would it have the most gravitational potential energy?
a)
When it is closest to the ground
b)
When it is at the highest point
c)
When it is halfway down
d)
It has the same amount of gravitational PE at all points
35.
Food has _______ potential energy that our bodies transform into kinetic energy.
a)
Elastic
b)
Nuclear 
c)
Gravitational
d)
Chemical
36.
A particle that carries a negative electric charge is called a(n) ______.
a)
neutron
b)
atom
c)
proton
d)
electron
37.

This is an example of a -------- circuit.

a)

Series

b)

Parallel

c)

Combination

38.

This is an example of a -------- circuit.

a)

Series

b)

Parallel

c)

Combination

39.

In this circuit, the bulb(s) that light up are:

a)

1 only

b)

2 only

c)

1 and 2

d)

None of them

40.

In this circuit, the bulb(s) that light up are:

a)

1 only

b)

2 only

c)

1 and 2

d)

None of them

41.

The bulbs have the same resistance. The brightest bulb in this circuit is:

a)

1 only

b)

2 only

c)

Same brightness

d)

None of them

42.

This circuit will work.

a)

Yes

b)

No

43.
The picture shows an electrical circuit. This circuit is a series circuit because: 
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
44.
As resistors are added in series to a circuit, the total resistance will...
a)
increase
b)
decrease
c)
stay the same
45.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
46.

Wood is a _____?

a)

conductor

b)

insulator

47.
A series circuit has ____ path(s) that the electric current can take. 
a)
One
b)
Two 
c)
Three 
d)
Four
48.
Parallel circuits are
a)
a circuit that has only one path for current to travel
b)
has more than one path for current to travel
c)
a circuit that does not allow electricity to travel through it
d)
magnets that cause electric current
49.

What does LDR stand for?

a)

Light dependent resistor

b)

Light emitting diode

c)

Light emitter resistor

d)

Light diode resistor

50.

What happens to the resistance of LDR when the light intensity increases?

a)

increases

b)

decreases

c)

does not change

d)

first increases then decreases

51.

What happens to the ammeter reading when the light intensity increases?

a)

increases

b)

decreases

c)

does not change

d)

first increases then decreases

52.
a)
Motor
b)
Mouse
c)
Ground
d)
Fuse
53.
a)
Battery
b)
Fuse
c)
Diode
d)
Switch (open)
54.

This symbol represents a ..........

a)

bulb

b)

wire

c)

cell

d)

resistor

55.

This symbol represents a .............

a)

Anode

b)

Alternator

c)

Amplifier

d)

Ammeter

56.

This symbol represents a ............

a)

angry circle

b)

bulb

c)

Resistor

d)

cell

57.

This symbol represents a ..........

a)

Bulb

b)

Resistor

c)

Wire

d)

L.E.D.

58.

This symbol represents a .........

a)

Resistor

b)

Battery

c)

Twix

d)

buzzer

59.

This symbol represents a ..........

a)

Bulb

b)

Battery

c)

Buzzer

d)

Microphone

60.

What is the name of this component?

a)

fuse

b)

cell

c)

motor

d)

lamp

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