Unit 4 - The universe and the solar system

A universe is a group formed by space, planets, their moons and celestial bodies.

• No

• Yes

Choose the correct name.

Our solar system is in the Milky Way.

• Constellation

• Galaxies

• Stars

Choose the correct name.

It is a group of starts that forms a pattern.

• Constellation

• Galaxies

• Stars

Choose the correct name.

They are gigantic balls of very hot gases.

• Constellation

• Galaxies

• Stars

Choose the types of galaxies.

• Spiral

• Circular

• Irregular

• Regular

• Elliptical

Choose the correct picture.

Planet

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• 
• 
• 

Choose the correct picture.

Asteroid

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• 
• 
• 

Choose the correct picture.

Comet

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• 
• 
• 

Choose the correct picture.

Satellite

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How many planets does the solar system have?

• 7

• 6

• 8

• 9