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Universe Review
Test Description: Stars, Light Years, Components of the Universe
Instructions: Answer all questions to get your test result.
1) What is the Big Bang theory?
A
universe was cool and then expanded
B
universe was hot, dense, and expanded
C
universe expands and contracts
D
universe was large and then got smaller
2) What does red shift tell astronomers?
A
objects in the universe are moving away from each other and expanding
B
objects in the universe are moving toward each other and contracting
3) What is the order of objects in the universe from smallest to biggest?
A
stars - nebulae - planets - galaxies - universe
B
universe - galaxies - nebulae - stars - planets
C
planets - stars - nebulae - galaxies - universe
D
nebulae - galaxies - stars - planets - universe
4) Why is the sun brighter than any other star when viewed on earth?
A
the sun is brighter than any other star
B
the sun is hotter than any other star
C
the sun is larger than any other star
D
the sun is closer than any other star
5) What is a light year?
A
the distance light travels in one year
B
the diameter of light emitted in one year
C
the density of light in one year
D
the Doppler effect of light in one year
6) What shape of galaxy is the Milky Way galaxy?
A
galactical
B
irregular
C
elliptical
D
spiral
7) Where is the Sun and our solar system located in the Milky Way?
A
the center of the galaxy
B
the bottom of the galaxy
C
the edge of the galaxy
D
the top of the galaxy
8) Why do astronomers use light years to measure distances between objects in space?
A
objects in space are far away from each other
B
objects in space have different years than earth years
C
objects in space are close to each other
D
objects in space only give off light waves
9) Betelgeuse is 495 light years away from earth. How long will it take the light to travel from Betelgeuse to Earth?
A
4.95 years
B
495 years
C
.495 years
D
49.5 years
10) What type of star is the Sun?
A
a massive supergiant star
B
a medium-sized protostar
C
a small white dwarf
D
a medium-sized main sequence star
11) What is happening to stars in main sequence?
A
they are expanding and cooling
B
they are shedding their outer layers
C
they are starting to dim and lose energy
D
they are undergoing nuclear reactions
12) What is a nebula?
A
an explosion of a dying star
B
clouds of dust and gas that forms stars
C
the core of a star
D
a wave emitted from stars
13) On the HR Diagram, where do you find stars that have a high luminosity?
A
left
B
bottom
C
right
D
top
14) On the HR Diagram, where do you find stars with low luminosity?
A
left
B
bottom
C
top
D
right
15) On the HR Diagram, where do you find stars with higher temperatures?
A
bottom
B
right
C
left
D
top
16) On the HR Diagram, where do you find stars with lower temperatures?
A
left
B
top
C
right
D
bottom
17) What electromagnetic wave has the longest wavelength, the least energy, and low frequency?
A
radio waves
B
microwave
C
visible light
D
gamma rays
18) Which electromagnetic wave has less energy than ultraviolet and is the only part of the spectrum humans can see?
A
gamma rays
B
visible light
C
radio waves
D
microwave
19) What electromagnetic wave has more energy than radio waves but less frequency than infrared?
A
microwave
B
visible light
C
gamma rays
D
radio waves
20) Which electromagnetic wave has a higher frequency than visible light and more energy than x-rays?
A
radio waves
B
gamma rays
C
microwaves
D
visible light
*select an answer for all questions
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