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THe Universe, Stars, and EMS Review Quiz

Total questions: 39

Worksheet time: 39mins

Name
Class
Date
1.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
2.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
3.
What determines the color of a star? 
a)
It's size
b)
It's temperature
c)
It's composition
d)
They are all the same color 
4.
As you move from the bottom to the top of the H R diagram the __________ changes.
a)
Temperature
b)
Luminosity or Brightness
5.
On the H-R diagram, the Sun is a _____.
a)
Main Sequence star
b)
Red Giant
c)
White Dwarf
d)
Blue Giant
6.
In which region of the H-R Diagram would you be likely to find the oldest stars?
a)
W
b)
X
c)
Y
d)
Z
7.
In which region of the H-R Diagram would you be likely to find Blue Giants?
a)
W
b)
X
c)
Y
d)
Z
8.

In which region of the H-R Diagram would you be likely to find stars that are in equilibrium between fusion and gravity?

a)
W
b)
X
c)
Y
d)
The orange dashed line
9.

What unit of measurement is used to calculate distance in our universe?

a)

astronomical units

b)

kilometers

c)

light years

d)

parsecs

10.

Which term describes the number of waves that pass a certain point each second?

a)

amplitude

b)

wavelength

c)

frequency

11.

Which of the following is an Irregular galaxy?

a)
b)
c)
d)

None

12.

Which of the following is an elliptical galaxy?

a)
b)
c)
d)

None

13.
Most stars are made of which elements?
a)
Hydrogen only
b)
Hydrogen and Lithium
c)
Hydrogen and Sodium
d)
Hydrogen and Helium
14.
What is the first stage of the life cycle of a star for all stars?
a)
nebula
b)
protostar
c)
main-sequence
d)
red giant
15.
This is a young star that glows as gravity brings it together
a)
Nebula
b)
Protostar
c)
Main-sequence star
d)
Red giant
16.
Low mass stars expand into what after using up the hydrogen in their core
a)
red giants
b)
supergiants
c)
white dwarfs
d)
protostars
17.
In this stage, a star spends most of its life. Hydrogen is fused into helium at a temperature of millions of degrees.
a)
nebula
b)
protostar
c)
main-sequence
d)
supergiant
18.

How do main sequence stars like the sun make their energy?

a)

fusion of hydrogen into helium

b)

fission of hydrogen into helium

c)

fusion of helium into hydrogen

d)

fission of helium into hydrogen

19.

The life cycles of stars are determined by their:

a)

mass (size)

b)

color

c)

distance from Earth

d)

how bright they are

20.
Our sun is currently in what star stage?
a)
Protostar
b)
Nebula
c)
Main Sequence
d)
Red Giant
21.

A ________ is an object so dense with so much gravity that even light cannot escape.

a)

neutron star

b)

white dwarf

c)

black hole

d)

black dwarf

22.
The core of a Red Giant collapses and becomes a ___________________.
a)
White Dwarf
b)
Blue Supergiant
c)
Red Supergiant
d)
Black Hole
23.

Electromagnetic waves vary in

a)

the speed they travel in a vacuum

b)

wavelength and frequency

c)

the way they reflect

d)

the orientation of their electric and magnetic fields

24.

What part of the wave is shown at letter A?

a)

crest

b)

wavelength

c)

trough

d)

frequency

25.

Which wave has a longer wavelength?

a)

wave C

b)

wave D

26.

Which wave has a greater frequency?

a)

wave B

b)

wave C

27.

Select the correct order of waves on the EMS from low to high energy

a)

Radio wave, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gamma

b)

Visible, Microwave, Infrared, Ultraviolet, X-ray, Gamma, Radio wave

c)

Gamma, X-ray, Ultraviolet, Visible, Infrared, Microwave, Radio wave

d)

Microwave, Radio wave, Visible, Infrared, Ultraviolet, X-ray, Gamma

28.

Which has the LONGEST wavelength and, therefore, the LOWEST frequency/energy

a)

Gamma Rays

b)

Visible Light

c)

Ultraviolet

d)

Infrared rays

29.
The higher the frequency the ______ the energy. 
a)
higher
b)
lower
c)
neither, stays the same
30.

The lower the frequency the ______ the energy.

a)

higher

b)

lower

c)

neither, stays the same

31.

What makes electromagnetic waves different from mechanical waves?

a)

no medium required

b)

medium needed

c)

light -catalyzed

d)

space exclusive

32.
Why are line emission spectra of elements called "atomic fingerprints"?
a)
They are all the same
b)
They are all unique
c)
They are all similar
d)
They all contain colored light
33.

A sample of gas is analyzed, producing the spectrograph in the image. Identify which element the sample is mostly made-up of?

a)

Hydrogen

b)

Helium

c)

Neon

d)

Sodium

e)

Mercury

34.

Which spectrum tells you that the star is moving away from you the fastest?

a)

A

b)

B

c)

C

d)

D

35.

Which spectrum shows blue shifting?

a)

A

b)

B

c)

C

d)

D

36.

Which star is moving the fastest towards you?

a)

A

b)

B

c)

C

d)

D

37.

Which elements are in the mixture?

a)

A only

b)

D only

c)

Z only

d)

A and D

e)

D and Z

38.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Helium

39.
Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.
a)
It is not moving
b)
It is moving away from Earth (Redshift)
c)
It is moving towards Earth (Blueshift)
d)
It is moving towards Earth (Redshift)

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