Astronomy Test 2 Review

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.

The Sun is our star made mostly of

• helium

• hydrogen and helium

• hydrogen

• helium, hydrogen, and gold

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

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.

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.

Solar flares

• 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.