Space

Why do planets orbit the sun (and not float around in space)?

• the moons are keeping them in place
• They were hit by an asteroid
• they were hit by a comet
• the sun's gravity keeps them in place

How long is Earth's rotation?

• one day
• one year
• one decade
• one hour

It takes Earth _____________ to make one revolution or orbit around the Sun.

• 365 days
• 365 hours
• 28 days
• 24 hours

The spinning of the Earth on its axis that causes night and day.

• Rotate
• Revolve

The moon appears to change shape because of _____.

• the Moon's revolution around Earth
• the seasons of the year
• the movement of stars in they sky
• Earth's rotation on its axis

What causes Earth's seasons?

• the tilt of Earth's axis
• Earth's rotation
• the revolution of the Moon
• Earth's distance from the Sun

It takes Earth _________ to make one complete rotation on its axis.

• 24 hours
• 365 days
• 28 days
• 24 days

It takes about _____________ for the moon to go through all of its phases.

• 28 days
• 365 days
• 24 hours
• 24 days

How many phases does the moon go through?

• 4
• 8
• 10
• 16

What is the missing phase?

• 
• 
• 
•