The Earth-Sun-Moon System — Unit test Answers
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About how old is the Sun?
A
1.2 billion yearsB
4.6 billion yearsC
6.4 billion yearsD
8.2 billion years22
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Why are there two high tides a day about 12 hours apart from each other?
A
Earth revolves around the Sun once during that time.B
Earth rotates entirely on its axis once during that time.C
The moon revolves around Earth once during that time.D
The moon’s orbit is in line with Earth’s orbit twice a day.23
Lori attended a lecture about the Sun, and the presenter had placed this image on the wall. Which layer of the Sun could this image be referring to?
A
the convection zone, because it shows how energy moves in a convection currentB
the radiation zone, because it shows how energy is transferred through radiationC
the core, because it shows how the Sun creates energy through the process of nuclear fusionD
the chromosphere, because it shows how energy is emitted by the atmosphere of the Sun24
Which type of star will become a black hole when it dies?
A
a protostarB
a supergiantC
a white dwarfD
a red dwarf25
Which list correctly orders the outer planets from least to greatest distance from the Sun?
A
Jupiter, Saturn, Uranus, NeptuneB
Saturn, Jupiter, Uranus, NeptuneC
Jupiter, Saturn, Neptune, UranusD
Neptune, Uranus, Saturn, JupiterDid you find these answers helpful?
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