Quiz on the Sun

What is the Sun?

• A hot, glowing ball of gas

• A cold, dark planet

• A large asteroid

• A comet

How far is the Sun from Earth?

• 930 million miles

• 93 thousand miles

• 93 million miles

• 9.3 million miles

What stage is our Sun currently in?

• Blue supergiant

• White dwarf

• Red giant

• Yellow dwarf

What is the Sun's closest star neighbor?

• Proxima Centauri

• Betelgeuse

• Alpha Centauri

• Sirius

What is the solar cycle?

• The change of seasons on Earth

• The Sun's activity cycle over 11 years

• The Earth's orbit around the Sun

• The Moon's phases

What causes auroras on Earth?

• Earthquakes

• Volcanic eruptions

• Reflections from the Moon

• Particles from the Sun interacting with Earth's atmosphere

How long does it take for light from the Sun to reach Earth?

• 8 minutes and 20 seconds

• 1 minute

• 1 hour

• 24 hours

What percentage of the solar system's material is contained in the Sun?

• 25%

• 50%

• 75%

• 99%

What is the primary source of energy for the Sun?

• Nuclear fusion

• Gravitational contraction

• Combustion of gases

• Solar wind

What is the outermost layer of the Sun called?

• Core

• Corona

• Chromosphere

• Photosphere