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.

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.

Prominences

• cause Earth's auroras at the poles.

• can cause damage to the ISS and satellites.

• increase charged particles in gases creating magnetic storms in Earth's atmosphere.

• can disrupt radio, telephone and television signals.

What protects Earth from solar winds?

• The poles

• The moon's gravity

• The magnetic field and the atmosphere

• The tidal range

What kind of waves that are mostly used in communication on Earth can be interrupted by solar flares?

• radio
• ultraviolet
• gamma
• infrared

Finish the sentence "The Sun is Earth's...

• ... closest Star."

• ...coldest place."

• ...ONLY energy source."

• ... planet."

This is the only layer seen during a total solar eclipse? 

• Corona
• Photosphere
• Core