Unit 2 Review

What is the primary source of energy for the Sun?

• Nuclear fusion

• Geothermal heat

• Chemical reactions

• Electrical currents

Which of the following helps protect the Earth from harmful solar radiation?

• Nuclear fusion reactions

• Solar flares

• Sun spots

• Magnetic field

Which of the following is NOT a phase of the Moon?

• Waxing crescent

• First quarter

• Full moon

• Lunar eclipse

On which layer of the Sun do prominences occur?

• Core

• Radiative Zone

• Chromosphere

• Photosphere

What causes an aurora?

• Nuclear fusion reactions

• Particles from the Sun reacting with Earth’s atmosphere

• Earth’s magnetic field responding to sunspots

• Moon’s gravitational pull

Eruptions of hot gas from the Sun’s surface are called:

• Solar flares

• Sunspots

• Auroras

• Coronas

What is a spring tide?

• A high tide that occurs during the spring season

• A low tide that occurs during the spring season

• An exceptionally high tide due to the alignment of the Sun, Moon, and Earth

• A tide that is in between high and low due to the alignment of the Sun, Moon, and Earth

At what point in the Moon’s orbit does it appear to be smallest?

• Apogee

• Perigee

• Neap

• Spring

What is the main factor that causes tides?

• Gravitational pull of the Sun

• Gravitational pull of the Moon

• Gravitational pull of the Earth

• Gravitational pull of other celestial bodies

What is the shape of the Moon's orbit around the Earth?

• Circular

• Elliptical

• Spherical

• Cylindrical