Crash Course Astronomy The Sun

What is the closest star to Earth?

• Alpha Centauri
• Sol
• Mars
• Moon

The sun is at the center of our ______.

• universe
• planet
• biosphere
• solar system

The hottest part of the sun is ______.

• the core
• the photosphere
• the mantle
• the radiative zone

How many Earths could fit INSIDE the sun?

• 10,000
• one million
• 200
• 25

Where is energy created in the sun?

• the convection zone
• the light
• the corona
• the core

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

• 100,000 years
• 5 seconds
• 8 minutes
• 4 months

What kinds of energy do we get from the sun?

• light and heat
• electricity and magnetism
• chemical and microwaves
• nuclear and electricity

WITHOUT energy from the sun, Earth would be _______.

• the only planet with life
• a frozen world floating in space
• covered by water
• the same as it is now

What is the sun made of?

• dirt and grass
• fire and lava
• super hot gases
• hot rocks

Why does the sun seem so much brighter and hotter than any other star?

• Because it is so much closer than the other stars.
• Because it is the biggest star in the universe.
• Because it is the hottest star in the universe.
• Because it is so much older than the other stars.