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Unit 4 Practice quiz astrophysics

Total questions: 70

Worksheet time: 32mins

Name
Class
Date
1.
The core of a Red Giant collapses and becomes a ___________________.
a)
White Dwarf
b)
Blue Supergiant
c)
Red Supergiant
d)
Black Hole
2.
After a supernova, the core can collapse into a neutron star, or if massive enough even a ___________.
a)
Black Hole
b)
White Dwarf
c)
Brown Dwarf
d)
Black Dwarf
3.
When a Red Giant's outer atmosphere drifts away it is now known as a ____________.
a)
planetary cloud
b)
White Dwarf cloud
c)
planetary nebula
d)
expanding nebula
4.
More massive stars continue to fuse elements in their cores all the way up to ________.
a)
silicon
b)
iron (Fe)
c)
carbon
d)
plutonium
5.
a gigantic explosion that causes the death of a large star
a)
pulsar
b)
red giant 
c)
supernova
d)
black hole
6.
As our sun continues through its life cycle, it will _________.
a)
gradually get smaller and smaller until it dies out.
b)
Gradually get larger until its outer layers drift off.
c)
become denser and denser until it forms a black hole.
d)
become hotter and hotter until it becomes a blue hypergiant.
7.

All stars in the main sequence are middle aged. That is, they are fusing ________ into ________ in their cores.

a)

hydrogen into helium

b)

helium into carbon

c)

oxygen into iron

d)

helium into hydrogen

8.
How did the elements we have on Earth get here?
a)
They are all man-made.
b)
They were formed in stars that eventually exploded in supernova.
c)
The sun created all of our elements through fusion.
d)
Elements blew to earth through solar wind.
9.
What is the correct life cycle of a star like our Sun?
a)
Nebula, main sequence, red supergiant, supernova, black hole, neutron star
b)
nebula, main sequence, red giant, planetary nebula, white dwarf, black dwarf 
c)
Main sequence, white dwarf, red giant, red supergiant, nebula
d)
Nebula, main sequence, brown dwarf, white dwarf, black dwarf
10.
Which stage do stars spend the majority of their lives in?
a)
Nebula Stage
b)
Main Sequence
c)
Red Giant Stage
d)
Dying stage
11.
Why won't our sun ever become a black hole?
a)
It is too massive
b)
It is too old
c)
It is too young
d)
It is too small
12.
What determines if a star becomes a giant or a supergiant?
a)
star size
b)
star temperature
c)
star color
d)
star luminosity
13.
______ is a force that causes dust particles to stick together in a nebula.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
iron
14.
A small, hot star near the end of its life is a star called a
a)
white dwarf
b)
red dwarf
c)
supergiant
d)
protostar
15.

Most common elements stars are made of...

a)

Iron & dust

b)

Gold & Zinc

c)

Hydrogen & Helium

d)

Carbon and Oxygen

16.
The final stage of a low mass star is a 
a)
neutron star
b)
nebula
c)
black hole
d)
black dwarf
17.
Which of the following is NOT a final stage of a star. 
a)
black hole
b)
black dwarf
c)
neutron star
d)
red giant
18.
In nuclear fusion, smaller atoms are forced together to create larger atoms. Does this process release, absorb or maintain energy?
a)
Absorb energy
b)
Maintain energy
c)
Release energy
19.

Why do stars collapse in on itself?

a)

Diamonds are starting to form in the core

b)

H2O2 starts to build up

c)

It is exposed to too much radiation

d)

Fusion stops overpowering gravity

20.

Which of the following is NOT evidence of the Big Bang Theory?

a)

most galaxies are red-shifted

b)

CMBR everywhere

c)

the universe is gaining matter

d)

the universe is expanding

21.
What do the initial moments after the Big Bang have in common with the universe as it exists now? 
a)
all the stars, galaxies, and planets that exist today were formed just a few moments after the Big Bang
b)
The universe back then could not sustain life, and it cannot sustain life now
c)
the universe was extremely hot then, and it is still extremely hot not
d)
the universe began expanding then, and it is still expanding today
22.
Why is the light from distant galaxies red-shifted?
a)
They produce more red light than nearby galaxies
b)
They are moving away from us
c)
The longer wavelengths are filtered out more by dust
d)
They are moving toward us
23.

According to scientific observations and evidence, the universe formed approximately

a)

13-14 billion years ago

b)

13-14 million years ago

c)

12-13 billion years ago

d)

12-13 million years ago

24.
Which piece of evidence supports the Big Bang theory?
a)
The more distant galaxies are moving the slowest
b)
The more distant galaxies are moving the quickest
c)
The more distant galaxies are moving towards us
d)
Galaxies and space is not changing
25.
What was the first element to form within the universe?
a)
Hydrogen
b)
Helium
c)
Carbon
d)
Oxygen
26.
Who discovered that the galaxies were moving away from one another?
a)
Edwin Hubble
b)
Issac Newton
c)
Albert Einstein
d)
Galileo Galile
27.

Which best describes Cosmic Background radiation?

a)

Evidence of a large expansion in the universe leaving radiation (heat)behind

b)

It is the life force that supports the universe

c)

Evidence of blackholes actually existing

d)

Evidence of that the universe is heating

28.
Which of the following techniques can give us the speed of a star relative to us?
a)
Stellar Parallax
b)
Standard Candles
c)
Doppler Shift (Red Shift)
29.
A light year is a unit of
a)
time
b)
distance 
c)
mass
d)
density 
30.
EM waves are always____________
a)
Transverse
b)
Compression
c)
Longitudinal
d)
Seismic
31.
The EM spectrum increases from left to right in________________.
a)
Wavelength
b)
Frequency
c)
Amplitude
d)
Height
32.
In the EM spectrum, ________ is shorter on the right than on the left.
a)
Frequency
b)
Hertz
c)
Amplitude
d)
Wavelength
33.
Cell phones use_____________waves.
a)
Microwaves
b)
Gamma
c)
XRays
d)
Radio 
34.
Cancer can be treated with_______________waves.
a)
Penicillin
b)
Radio
c)
Infrared
d)
Gamma
35.
The acronym (letters) used to remember visible light is____________
a)
KTPERRY
b)
ROYGBIV
c)
DOGPOUND
d)
ROMERO
36.
The orange line is measuring the _________________________.
a)
wavelength
b)
amplitude
c)
crest
d)
trough
37.
EM waves ________ a medium.
a)
require
b)
don't require
c)
can have
d)
sometimes have
38.
_____ have the longest wavelengths and lowest frequencies of all electromagnetic waves.
a)
microwaves
b)
radio waves
c)
gamma rays
d)
ultraviolet
39.
The shortest wavelength in visible light is______.
a)
violet
b)
red
c)
blue
d)
yellow
40.
This type of EM wave can cause skin cancer. 
a)
microwaves
b)
ultraviolet ray
c)
radio
d)
infrared
41.
Airport security is an example of _________.
a)
infrared rays
b)
radio waves
c)
x-rays
d)
gamma rays
42.
_______ carry the greatest amount of energy. 
a)
x-rays
b)
gamma rays
c)
infrared rays
d)
visible light
43.
Nuclear weapons are examples of __________. 
a)
x-rays
b)
ultraviolet rays
c)
gamma rays
d)
infrared rays
44.
All electromagnetic waves have _________ wavelengths and ________ frequencies.
a)
different, similar
b)
different, different
c)
similar, similar
d)
similar, different
45.
EM waves with wavelengths between those of infrared and ultraviolet waves are _______.
a)
microwaves
b)
visible light
c)
x-rays
d)
gamma rays
46.
This type of EM wave shows a break in bones.
a)
gamma ray
b)
x-ray
c)
brokenometer
d)
radio wave
47.
What is a galaxy?
a)
a star and it's surrounding planets
b)
billions of stars held together by gravity
c)
the big bang
d)
a cluster of nebulas
48.
If a star is moving toward us the spectral lines will be
a)
blue shifted
b)
red shifted
c)
green shifted
d)
pulsating
49.
Hubble's law tells us
a)
galaxies closer to ours are moving away at a faster speed
b)
galaxies that are closer to ours are going to collide with ours 
c)
galaxies that are farther away move at a faster speed
d)
the universe is expanding and will soon stop
50.
How old is our universe?
a)
13.7 billion years old
b)
4.6 billion years old
c)
5,000 years old
d)
13 years old
51.
Which happened first in the development of our universe?
a)
sub atomic particles
b)
Hydrogen & Helium
c)
stars form
d)
earth forms
52.
Matter can be converted into energy
a)
true
b)
false
53.

What is a charge?

a)

A characteristic of a particle

b)

The size of the particle

c)

The purpose of the particle

d)

The distribution of the particle

54.

By analyzing light received from a star, we learn...

a)

Chemical Composition

b)

Density

c)

Magnetic Field

d)

Size of the Sun

55.

When heated, atoms can...

a)

Vibrate

b)

Rotate

c)

Freeze

d)

Release kinetic energy

56.

What happens when you shine a light through a prism?

a)

The prism absorbs the light

b)

The amount of light is low density

c)

There is a continuous spectra of light

d)

There is no light that shines through

57.

Why is UV light dangerous?

a)

It can break bonding

b)

It is ugly to look at

c)

It isn't dangerous

d)

It has more energy

58.
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 relative to Earth
b)
It is moving away from Earth (Redshift)
c)
It is moving towards Earth (Blueshift)
d)
It is moving towards Earth (Redshift)
59.
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)
60.

Mark two things that the H-R diagram measures.

a)

Luminosity

b)

Color

c)

Size

d)

Shape

e)

Distance

61.

What color represents a cool star

a)

Blue

b)

White

c)

Red

d)

Yellow

62.

What is luminosity?

a)

the amount of heat that a star gives off

b)

the color of the star

c)

the amount of energy a star emits

d)

a type of game that you play to build up your brain muscles.

63.

What is this section of stars known as?

a)

Main Sequence

b)

Red Giants

c)

White dwarfs

d)

Blue/Red Supergiants

64.

What percent of stars spend their life as main sequence star ?

a)

90%

b)

85%

c)

80%

d)

50%

e)

95%

65.
Based on this diagram which type of stars would belong to spectral class G and have the highest luminosity?
a)
Main Sequence Stars
b)
Giants
c)
Super Giants
d)
White Dwarfs
66.

How does the mass of a hot, bright main sequence star compare to a cool, faint main sequence star?

a)

They have more mass

b)

They have the same mass

c)

They have less mass

67.

What small, hot, faint objects are found at B?

a)

neutron stars

b)

black holes

c)

white dwarfs

d)

brown dwarfs

68.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
69.
Hotter stars appear to be what color? 
a)
Red
b)
Blue
c)
Yellow
d)
Green
70.
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 

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