4th Grade - Solar System

Which of the following terms match the definition below?
"To spin around on an axis"

• revolve
• orbit
• rotate
• axis

How long does it take for Earth to rotate or spin on its axis?

• 24 hours
• 1 year
• 365 days
• 12 months

When the moon's light is increasing, this is called _________.

• waxing
• waning

Which moon phase comes after the third quarter?

• waning gibbous
• waxing crescent
• waxing gibbous
• waning crescent

Which moon phase comes roughly 15 days before a full moon?

• waxing gibbous
• waxing crescent
• new moon
• first quarter

Which of the following causes seasons?

• Earth's tilt and rotation
• Earth's tilt and revolution
• Earth's revolution and rotation
• Earth's orbit 

About how long does it take for the moon to revolve around Earth one time?

• 30 days
• 1 year
• 1 day
• 24 hours

If scientists discovered a large, round object revolving around a star, that object would be considered a...

• moon
• planet
• star
• solar system

Which is true of stars and planets?

• Stars move through the sky, but planets do not. 
• Stars are the brightest objects in the night sky.
• It is easier to see planets than stars because planets glow with heat.
• Stars and planets both move. 

A star's color tells us about its...

• temperature
• size
• rotation
• distance from Earth