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Section 8.2
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1
What forms when a star creates a hot core surrounded by gas and dust?
A)a nebula
B)a protostar.
C)a planetesimal
D)the photosphere
2
Which of the following will lead to a protostar starting to consume hydrogen fuel?
A)nebula formation
B)solar radiation
C)nuclear fission
D)nuclear fusion
3
What is an area of strong magnetic fields found on the Sun known as?
A)an aurora
B)a sunspot
C)a protosphere
D)The lithosphere
4
Which of the following forms when charged particles from the Sun collide with the Earth’s upper atmosphere?
A)sunspots
B)solar flares
C)solar wind
D)auroras
5
What percentage of incoming solar radiation is absorbed by Earth’s surface?
A)Twenty percent
B)Thirty percent
C)Fifty percent
D)Seventy percent





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