Focus On Physical Science: California Grade 8

Lesson 2: How Stars Shine

Standards Check

1.
What will be the final state of the Sun? 2.g
A)black hole
B)black dwarf
C)supernova
D)white dwarf
2.
How do stars begin? 2.g
A)when other stars become supernovae and shoot off smaller stars
B)They emerge from black holes.
C)when fusion begins in gas clouds in space
D)when white dwarfs start generating light again
3.
Earth's solar system might have begun as a __________. 2.g
A)comet
B)black hole
C)galaxy
D)nebula
4.
Another way to define "nebula" is __________. 4.d
A)exploding star
B)old star
C)dying star
D)young star
5.
Once stars run out of hydrogen and the temperature begins to increase, these stars are said to be __________. 4.d
A)a galaxy
B)a white dwarf
C)a giant
D)a supernova
6.
When a star becomes a supernova its brightness __________. 4.d
A)decreases
B)increases
C)vanishes
D)doesn't change
7.
Fusion occurs when __________ and __________ combine to make energy. 4.d
A)carbon, oxygen
B)carbon, helium
C)hydrogen, oxygen
D)hydrogen, helium
Grade 8
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