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
• 365.25 days
• 28 days
• 1 month

Why does Earth have seasons?

• because sometimes the Earth is closer to the sun and farther away from the sun
• because the temperature of the sun changes
• because Earth's axis is tilted
• because of Earth's rotation and revolution

When the northern hemisphere (where we live) is tilted toward the sun, what season are we in?

• winter

• spring

• summer

• fall

How is Earth's axis tilted during an equinox

• toward the sun
• away from the sun
• neither toward or away from the sun
• parallel to the sun

When the southern hemisphere is tilted toward the sun, what will they experience?

• More direct sun rays
• More indirect sun rays
• An equal amount of direct and indirect rays

The Earth's revolution around the sun takes 365.25 days.  What do we do about that .25 day?

• leap year
• equinox
• solstice
• new year

Why does the same side of the moon always face the Earth?

• the moon doesn't rotate
• the moon doesn't revolve
• the Earth's gravity keeps the moon facing it
• the moon's rotation and revolution takes the same amount of time

What determines which phase of the moon you see?

• where you are on Earth
• how much of the sunlit side faces Earth
• how much of the moon is lit by the sun
• how much of the moon is in the sky