AnswersLVA-Earth and Space Science - FALLOrigin and Evolution of the Universe

Origin and Evolution of the Universe — Unit test Answers

15 verified answers
1
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What is the Milky Way?

a
a spiral galaxy in which Earth is located
a
an elliptical galaxy in which Earth is located
a
an irregular galaxy in which Earth is located
t
the closest galaxy to the one in which Earth is located
2
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Which type of star will become a black hole when it dies?

a
a protostar
a
a supergiant
a
a white dwarf
a
a red dwarf
3

Scientists believe that some mass extinction events are possibly caused by asteroids, volcanic activity, or climate change. How many mass extinctions have occurred on Earth in the last 4.6 billion years?

A
0
B
1
C
5
D
10
4

Which is a type of star system?

A
dim stars
B
solar system planets
C
wobbling stars
D
globular clusters
5

Which remains the same as the distance of an object from Earth changes?

A
size of the force
B
strength of gravity
C
mass of the object
D
weight of the object
6

What is the correct order of star colors from hottest to coolest?

w
white, yellow, red, blue
y
yellow, orange, white, red
r
red, orange, yellow, blue-white
b
blue, white, yellow-white, orange
7

Solar winds have an influence all the way to about 160 AU from the Sun. About how many kilometers is that?

A
24,000,000,000 km
B
48,000,000,000 km
C
240,000,000,000 km
D
480,000,000,000 km
8

What term generally describes small chunks of rocks and debris in space?

A
meteorites
B
meteoroids
C
meteors
D
meteorides
9

What occurs as energy is transferred through the radiative zone of the Sun? Check all that apply.Gamma rays are produced.Photons are absorbed and reemitted.Energy is transferred through the large-scale movement of material.Photons are scattered in many directions.Energy is released into the photosphere.

A
Gamma rays are produced.
B
Photons are absorbed and reemitted.
C
Energy is transferred through the large-scale movement of material.
D
Photons are scattered in many directions.
E
Energy is released into the photosphere.
10

What term specifically describes small chunks of rocks and debris in space that burn up in Earth’s atmosphere?

A
meteorites
B
meteoroids
C
meteors
D
meteorides
11

The image shown is an illustration of Kepler’s second law.

Question illustration
A
The gravitational force at W is less than the gravitational force at Y.
B
The time needed to travel from W to X is the same as the time needed to travel from Y to Z.
C
The gravitational force at W is the same as the gravitational force at Y.
D
The time needed to travel from W to X is greater than the time needed to travel from Y to Z.
12

Which diagram correctly describes the changes that occur as a small piece of rock falls from space and hits the Earth?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
13

Which term defines a star system with two stars?

A
binary star system
B
eclipse star system
C
open cluster star system
D
globular cluster star system
14

Which causes objects in the universe to resist a change in speed or direction?

A
gravity
B
inertia
C
motion
D
orbit
15

Which is the final event that occurs when a star is forming?

T
The outer layer of the star expands.
G
Gravity pulls gas and dust together.
A
A black hole forms as the core collapses.
N
Nuclear fusion begins under high pressure.

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