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EMS, Doppler and Color

Total questions: 35

Worksheet time: 58mins

Name
Class
Date
1.

This is the portion of the Electromagnetic spectrum that has the longest wavelength.

a)

Gamma Rays

b)

Visible Light

c)

Microwaves

d)

Radio Waves

2.

The portion of the Electromagnetic Spectrum that has the shortest wavelengths.

a)

Microwaves

b)

Gamma Rays

c)

X-Rays

d)

Infrared

3.

What is the portion of the Electromagnetic Spectrum that we can see and interpret with our eyes?

a)

Infrared Waves

b)

Ultraviolet Waves

c)

Radio Waves

d)

Visible Light

4.

White light is a combination of

a)

All of the colors of the rainbow

b)

All of the different portions of the EM Spectrum

c)

Nothing, just white light.

d)

Red and green light only

5.

Which color has the shortest wavelength of visible light?

a)

Red

b)

Orange

c)

Green

d)

Violet

6.

Which color has the longest wavelength of visible light?

a)

Red

b)

Orange

c)

Green

d)

Purple

7.

When the wavelengths in the Electromagnetic Spectrum get shorter, what happens to the frequency of the waves?

a)

It decreases

b)

It increases

c)

It stays the same

d)

They are unrelated

8.

In the Electromagnetic Spectrum, the waves with higher frequencies have __________ energy.

a)

more

b)

less

c)

the same

d)

no relation to

9.

Which type of waves in the Electromagnetic Spectrum are used to send to and from cell phones?

a)

Radio Waves

b)

Microwaves

c)

Infrared Waves

d)

Cellular Waves

10.

What is the difference in energy between Infrared and Ultraviolet Waves?

a)

Infrared Waves have more energy than Ultraviolet Waves

b)

They both have the same amount of energy

c)

Ultraviolet Waves have more energy than Infrared Waves

d)

Neither of them have any energy.

11.

Red light has __________ energy than blue light.

a)

more

b)

less

12.

Can astronomers study the light from a star to determine its composition?

a)

yes

b)

no

13.

T/F: Every element has a unique set of spectral lines.

a)

True

b)

False

14.
Long sound waves are...
a)
high pitched
b)
low pitched
c)
medium pitched
15.
When the car moves AWAY from you, its horn seems...
a)
Low pitched
b)
High pitched
c)
Normal
16.
When an ambulance move TOWARD you it sounds ________ pitched. 
a)
high
b)
low
c)
medium
17.
What can you tell about this object's motion?
a)
Moving to the North (up).
b)
Moving to the South (down). 
c)
Moving to the West (left). 
d)
Moving to the East (right). 
18.
What can you tell about the motion of this object?
a)
Moving left.
b)
Moving right quickly.
c)
Standing still. 
d)
Moving up slowly. 
19.
What direction is this object moving?
a)
left
b)
right
c)
up
d)
down
20.
What do the light waves of a galaxy that is moving TOWARD us look like?
a)
red shifted
b)
blue shifted
c)
green shifted
d)
yellow shifted
21.
What do the light waves of a galaxy that is moving AWAY from us look like?
a)
red shifted
b)
blue shifted
c)
green shifted
d)
yellow shifted
22.
The vast majority of galaxies in our universe are moving away from us.  We know this because we observe __________ in the galaxies absorption spectra.
a)
Redshift
b)
Blueshift
c)
Turbulance
d)
Superposition
23.
Which discovery(ies) came from our understanding redshift/ blueshift?
a)
The universe is expanding
b)
Most galaxies are moving away from us
c)
Andromeda galaxy will collide with the Milky way in 3.75 billion years
d)
All of the above (and many more)
24.

What is the Doppler effect?

a)

The observed change in frequency of sound or light because of the relative motion of a wave source and the observer.

b)

The observed change in amplitude of sound or light because of the relative motion of a wave source and the observer.

c)

The observed change in wave speed of sound or light because of the relative motion of a wave source and the observer.

d)

The observed change in equilibrium position of sound or light because of the relative motion of a wave source and the observer.

25.

The pitch of a sound wave relates to the wave's _________________.

a)

Amplitude

b)

Frequency

c)

Wavelength

d)

Period

26.

An ambulance is driving towards you as you stand on the sidewalk. What happens to the pitch of the siren as it comes towards you?

a)

It increases

b)

It decreases

27.

Light can change color due to the Doppler Effect.

a)

True

b)

False

28.

Look at the picture. Who is experiencing a higher pitched sound?

a)

Observer A

b)

Observer B

c)

There's no difference

29.

Look at the picture. Who is experiencing a lower pitched sound?

a)

Observer A

b)

Observer B

c)

There is no difference

30.

Which color has the longest wavelength and shortest frequency?

a)

Red

b)

Yellow

c)

Blue

d)

Violet

31.

Which color has the shortest wavelength and highest frequency?

a)

Violet

b)

Yellow

c)

Orange

d)

Green

32.

The color of objects that we see is the color of the wavelength that is ___________ from its surface.

a)

refracted

b)

reflected

c)

absorbed

d)

dispersed

33.
Mechanical waves are created when a source of energy causes a medium to...
a)
Move
b)
Expand
c)
Vibrate
d)
Compress
34.
What can electromagnetic waves travel through?
a)
mediums
b)
empty space
c)
solely solids
d)
both mediums and empty space
35.
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