Space Technology — Unit test Answers

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1
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Which is the final event that occurs when a star is forming?

A
The outer layer of the star expands.
B
Gravity pulls gas and dust together.
C
A black hole forms as the core collapses.
D
Nuclear fusion begins under high pressure.
2
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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
4

What was discovered in 1965 and is believed to be leftover thermal energy from the big bang?

A
red shift
B
the Eagle Nebula
C
the Doppler effect
D
background radiation
5

Which is a future NASA research project?

A
using a probe to collect data
B
conducting research from a space station
C
collecting samples on an asteroid
D
conducting a space mission with no people
7

Which characteristic do Mercury and Mars share?

A
many moons
B
rocky surfaces
C
thick atmospheres
D
moderate temperature fluctuations
9

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
12

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A
visible light
B
gamma rays
C
ultraviolet light
D
infrared radiation
13

Which is one physical property that all stars have?

A
They are made of gases.
B
They shine very brightly.
C
They have a triangle shape.
D
They contain iron in their cores.
15

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

A
white, yellow, red, blue
B
yellow, orange, white, red
C
red, orange, yellow, blue-white
D
blue, white, yellow-white, orange

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