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Physics 7

Total questions: 60

Worksheet time: 1hrs 14mins

Name
Class
Date
1.

What happens when two forces act in the same direction?

a)

They cancel each other out.

b)

The stronger one prevails.

c)

Their strengths are added.

d)

Their sum divided by two is the total force.

2.

What is a wavelength?

a)

How many waves pass a certain point

b)

The distance from one wave crest to another

c)

The entire length of a wave

3.
What is the longest wavelength on the EMS (electromagnetic spectrum)?
a)
Radio Waves
b)
Micro Waves
c)
Gamma Rays
d)
X-Rays
4.
Which color has the longest wavelength?
a)
Orange
b)
Green
c)
Blue
d)
Indigo
5.

Which of the following colors have the longest wavelength?

a)

Red

b)

Yellow

c)

Blue

d)

Green

6.

Which of the following has the correct order from shortest wave to longest?

a)

Red, orange, green

b)

Green, yellow, blue

c)

Indigo, Green, Yellow

d)

Violet, Green, Indigo

7.
Waves that require a medium are called 
a)
mechanical waves
b)
transverse waves
c)
light waves
d)
gamma rays
8.
What happens when you increase the amplitude of a sound?
a)
it makes the sound louder
b)
it makes the sound travel faster
c)
it increases the wavelength of the sound
d)
it increases the frequency of the sound
9.

What kind of wave is pictured below?

a)

compressional wave

b)

transverse wave

c)

sound wave

d)

mechanical wave

10.
What can electromagnetic waves travel through?
a)
mediums
b)
empty space
c)
solely solids
d)
both mediums and empty space
11.
What property of this wave is represented by the letter "A"
a)
amplitude
b)
crest
c)
trough
d)
wavelength
12.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
13.
What do waves carry from place to place?
a)
Energy, but not matter or particles
b)
Energy and matter or particles
c)
Matter or particles but not energy
d)
Neither energy nor matter or particles
14.
Which wave is pictured?
a)
Transverse
b)
Longitudinal
c)
Both
d)
Neither
15.
What type of wave move a slinky back and forth?
a)
longitudinal
b)
transverse
16.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
17.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
18.
Which of the following can sound travel through?
a)
solid
b)
liquid
c)
gas
d)
all of the above
19.
What type of wave is this?
a)
Longitudinal
b)
Transverse
20.

Which transverse wave has the highest frequency?

a)

1

b)

2

c)

3

d)

4

21.

Which diagram shows the wavelength of a wave?

a)
b)
c)
22.

The highest point on a transverse wave is the

a)

compression

b)

crest

c)

rest position

d)

trough

23.

The lowest point on a transverse wave is the

a)

compression

b)

crest

c)

rest position

d)

trough

24.

If the wavelength of a wave increased, what would happen to the frequency?

a)

decrease

b)

increase

c)

stay the same

25.

A wave that can travel through matter and empty space is a:

a)

electromagnetic wave

b)

longitudinal wavy

c)

transverse wave

d)

mechanical

26.
Which of the following is NOT a mechanical wave?
a)
sound
b)
light
c)
ocean
d)
seismic
27.
How would a person measure the wavelength on this sound wave?
a)
dense to less dense
b)
trough to crest
c)
compression to compression
d)
beginning of illustration to the end
28.

Amplitude is the distance between

a)

the crest and the trough

b)

each wave

c)

the middle point of a wave and the clouds

d)

the crest or trough and the middle point of the wave

29.

You can't hear sounds in outer space because there is no

a)

medium

b)

light

c)

energy

d)

heat

30.
Which answer best explains what causes a wave?
a)
Shaking
b)
Potential energy
c)
Light
d)
Vibrations
31.

What is a conductor?

a)

a material that heat moves through easily

b)

a material that heat does not move through easily

c)

a material that turns cold when heated

d)

a tool for measuring temperature

32.

What is an insulator?

a)

a material that heat moves through easily

b)

a material that heat does not move through easily

c)

a material that turns cold when heated

d)

a tool for measuring temperature

33.

Which of these is a better conductor?

a)
b)
34.

Which of these is a measure of how hot or cold something is?

a)

temperature

b)

radiation

c)

insulation

d)

friction

35.
Heat transfers from ______ objects to cold objects. 
a)
Cold
b)
Hot
c)
Convection
d)
Radiation 
36.
What type of heat transfer happens in liquids and gases?
a)
Conduction
b)
Convection
c)
Radiation
37.
Touching hot sand is.... 
a)
Conduction
b)
Convection
c)
Radiation 
38.
Hot air rising from a campfire is...
a)
Conduction
b)
Convection
c)
Radiation 
39.
A heat lamp on a reptile cage is what type of heat transfer?
a)
Conduction
b)
Convection
c)
Radiation
40.
Objects that allow energy to pass through them easily are _______
a)
Insulators
b)
Conduction
c)
Conductors
d)
None of the above
41.
Sun tanning is an example of....
a)
Conduction
b)
Convection
c)
Radiation 
42.
Which of the following is not an example of convection
a)
Cool breeze coming off the ocean
b)
Water boiling when you make Mac & Cheese
c)
A fireplace heating up a room
d)
Lighting a candle 
43.

What is electricity?

a)

an object that electrons do not flow through

b)

energy created by moving charged particles

c)

when two objects repel each other

d)

a circuit that has only one path for electricity to flow

44.

Which of the following is an insulator?

a)

an eraser

b)

a wire

c)

a penny

d)

a metal spoon

45.
Which atomic particle has a positive charge?
a)
Proton
b)
Neutron
c)
Electron
46.
Which subatomic particle has a neutral charge?
a)
Proton
b)
Neutron
c)
Electron
47.

These parts of the atom orbit around the nucleus

a)

atoms

b)

electrons

c)

protons

d)

neutrons

48.

What is the primary purpose of a lightning rod?

a)

to repel lightning

b)

to attract lightning and guide it to the ground

c)

to remove or discharge the object to which it is attracted

d)

to concentrate the charges at the top of the structure to which it is attached

49.
How does sound travel?
a)
in only one direction
b)
in waves
c)
it doesn't travel
50.
Pitch is __________________.
a)
how loud or soft a sound is
b)
how high or low a sound is
c)
when sound comes back to you
51.
What is your average speed if you take 0.5 h to jog 4,000 m?
a)
8000 m/h
b)
2000 m/h
c)
0.000125 m/h
d)
800 m/h
52.
If the average speed of a car is 110 km/h, how long will it take the car to travel 715 km?
a)
6 h
b)
6.5 km/h
c)
6.5 h
53.
Kira jogs to a store 72 m away in a time of 36 s. What is Kira's average speed?
a)
0.5 m/s
b)
2 m/s
c)
2 h
54.

What is speed?

a)

It is how far you go

b)

It is the distance traveled over a period of time

c)

It is how fast you accelerate

d)

It is the change in the postilion of a object

55.
Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his distance?
a)
10
b)
7
c)
8
d)
6
56.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
57.
Sara walks from Point A to Point B. Which is true?
a)
Distance and displacement are EQUAL
b)
Distance is less than displacement
58.
Find the distance Sara walks from A to B,  B to C then C to D?
a)
11m
b)
3m
c)
5m
59.
A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
60.
A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.
a)
30 m/s
b)
24 m/s2
c)
9 m/s2
d)
81 km/hr

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