Ch. 8 Science Test

A huge cloud of dust and gas

• Yellow dwarf
• Solar nebula
• Solare flares
• Core

The innermost part of the sun

• Photosphere
• Core
• Atmosphere
• Rock

How long does it take Earth to make a trip around the sun?

• 600 days
• 365 days
• 31 days

A group of stars held together by gravity

• Galaxy
• Supernova
• Red Giants
• Sun

Stars spend their lives making this

• Red Giants
• Light
• Dreams
• Energy

Wh was the Hubble Space Telescope important?

• It allowed astronomers to land on the moon
• It showed us pictures of stars
• It gave close up pictures of the sun

A scientist who studies space

• Biologist
• Archeologist
• Astronomer
• Farmer

Massive explosion when the universe began

• Big Boom
• Big Bang
• Boom Bang
• KaPow

Around how old is the universe thought to be?

• About 25 billion years old
• About 6 billion years old
• About 14 billion years old

Oval-shaped galaxies

• Gravity
• Irregular
• Spiral
• Elliptical