Earth, Sun, Moon

 to spin on an axis

• rotate
• revolve
• orbit
• hop

the imaginary line around which Earth rotates

• equator
• atomosphere
• axis
• rotate

to go around, or orbit, another object

• revolve
• rotate
• orbit
• spin

the path of one object in space around another

• rotate
• spin
• revolve
• orbit

caused by the spin of the Earth

• seasons
• day/night cycle
• year
• climate

What causes day and night on Earth?

• the tilt of Earth's axis
• Earth's revolution around the sun
• the moon
• Earth's rotation

How long does Earth's rotation take?

• 365.25 days
• 24 hours
• 6 months
• 28 days

How long does Earth's revolution around the sun take?

• 24 hours

• 365 and 1/4 days

• 28 days

• 1 month

Each year is really we have 1/4 of a day longer than what we consider a year. Every 4 years the 1/4s add up and we have an extra day that year. What is this called?

• solstic

• equinox

• leap year

• daylight savings

 An ellipse is the shape of Earth’s ________.

• surface
• orbit
• rotation
• axis