Astronomy TEST Review

All stars begin their life in a

• Main Sequence
• Nebula
• Protostar
• Black Dwarf

The life cycles of stars are determined by their:

• mass (size)
• color
• distance from Earth
• luminosity

A gigantic explosion that causes the death of a large star is called

• pulsar
• red giant 
• supernova
• black hole

A ________ is an object so dense with so much gravity that even light cannot escape.

• neutron star
• white dwarf
• blackhole
• black dwarf

A star is born when ________________ begins to happen.

• nuclear fusion
• nuclear abrasion
• crying
• nuclear fission

More massive stars continue to fuse elements in their cores all the way up to ________.

• silicon
• iron (Fe)
• carbon
• plutonium

Where does the sun's energy originate?

• Nuclear reactions of heavy elements.
• Nuclear fusion of smaller into larger elements.
• Nuclear reactions of cells
• Nuclear fission reactions

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

When a young, developing star becomes massive enough and dense enough, the process of _______ begins.

• H --> He fusion
• He --> C fusion
• He --> C --> O fusion
• fission

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

NGSS.HS-ESS1-3

In the Giant and Supergiant phases of a star's life, ________ fuses and makes heavier elements.

• Hydrogen

• Helium

• Carbon

• Oxygen

What is the sun mostly made up of

• Helium
• Core
• Carbon
• Hydrogen