The Sun

The Sun is our star made mostly of

• helium

• hydrogen and helium

• hydrogen

• helium, hydrogen, and gold

Sunspots are

• large flares of energy that loop back to the sun's surface.

• magnetic areas on the sun's surface that appear darker because they are a lower temperature than surrounding areas.

• bursts of energy that flash off the sun's surface.

corona

• outermost surface of the sun emitting light we see; outermost layer of sun's atmosphere visible only to us during solar eclipse

• visible layer of the sun emitting light we see; lowest layer of sun's atmosphere

• hottest part of the sun; produces energy through nuclear fusion

Solar flares are

• large flares of energy that loop back to the sun's surface.

• areas on the sun's surface that appear darker because they are a lower temperature than surrounding areas.

• bursts of energy that flash off the sun's surface.

photosphere

• outermost surface of the sun emitting light we see; outermost layer of sun's atmosphere visible only to us during solar eclipse

• visible layer of the sun emitting light we see; lowest layer of sun's atmosphere

• hottest part of the sun; produces energy through nuclear fusion

solar wind

• occurs when corona sends out electrically charged particles

• occurs when photosphere sends out electrically charged particles

• occurs when core sends out electrically charged particles

Prominences are

• large flares of energy that loop back to the sun's surface.

• areas on the sun's surface that appear darker because they are a lower temperature than surrounding areas.

• bursts of energy that flash off the sun's surface.

The sun converts matter into energy in the

• corona.
• radiative zone
• convection zone
• core

Most of the sun’s energy is a result of

• nuclear fusion  
• nuclear fission
• atomic reactions
• coronal mass ejection

When hydrogen nuclei fuse into helium nuclei

• the nuclei die.
• energy is released.
• particles collide
• particles neutralize.