Topographic Maps Answers

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Which statements describe properties of stars? Check all that apply.

A
Stars produce energy through nuclear fusion.
B
Stars produce energy through gravity.
C
Stars are massive objects composed of gas.
D
Stars are solid objects that we could stand on.
E
Stars are composed primarily of hydrogen and helium.
F
Stars are composed primarily of liquids such as water.
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7

Which statements describe how stars are born? Check all that apply.

A
Stars are born in clouds of gas and dust called nebulas.
B
The gas and dust are pulled together by gravity.
C
If the cloud that is pulled together has enough mass, a red giant is formed.
D
The pulled-together cloud collapses and becomes hot and dense.
E
Heat and pressure cause nuclear fusion, which signals the birth of a star.
8

This image shows a nebula. What would most likely be found in a nebula?

A
a white dwarf
B
a neutron star
C
a protostar
D
a red giant
9

Which statements describe the death of stars? Check all that apply.A star’s final stages of life depend on its mass.Stars die when they run out of fuel.When a star starts to die, its core expands.The outer portion of the star contracts.All stars become black holes when they die.

A
A star’s final stages of life depend on its mass.
B
Stars die when they run out of fuel.
C
When a star starts to die, its core expands.
D
The outer portion of the star contracts.
E
All stars become black holes when they die.
11

Which elements can be made in the core of a star after the hydrogen is used as fuel? Select four answers.

A
iron
B
gold
C
silicon
D
carbon
E
oxygen
F
hydrogen
12

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