Space Review

The planet Earth orbits around the sun because of?

• Gravity
• Something hit it a long time ago and made it move cuz inertia
• I don't know
• who cares

Why do other stars appear so much smaller than the sun?

• They are much smaller
• They are so far away
• They are not as bright
• They are dwarf stars

Which causes the day-and-night cycle on earth?

• Earth moving around the sun
• The sun moving around the Earth
• Earth tilting on its axis
• Earth spinning on its axis

When a planet spins on its axis, it is said to ___________________.

• orbit
• rotate
• revolve
• eclipse

The lunar cycle begins with which moon phase?

• New Moon
• Full Moon
• Waxing Crescent
• Waning Gibbous 

What causes seasons?

• The distance of a planet from the sun
• The gravitational pull of the Earth and Moon
• The tilt and revolution of Earth around the sun
• Changing temperatures on Earth

What happens when the area you live in tilts away from the sun?

• It is summer

• It is spring

• It is fall

• It is winter

How long does it take from one full moon to the next full moon?

• About one day.
• About one year
• About one season
• About one month.

The greater mass a planet has,

• the greater the gravitational force it has

• the less gravitational force it has

• gravitational force does not depend on mass

Which planet is the smallest?

• Mercury

• Venus

• Earth

• Mars