Earth in Space

How long is one of Earth's revolutions?

• 28 days (one month)

• 365 days (one year)

• 7 days (1 week)

• 24 hours (1 day)

How long is our moon's revolution?

• 365 days (1 year)

• 24 hours (1 day)

• 28 days (1 month)

• 7 days (1 week)

What is the shape of a planet's orbit?

• circular

• elliptical

• rectangular

• triangular

What does elliptical mean?

• oval

• circular

• square

• in a really long way

What keeps the planets in their orbits around the sun, and the moon in its orbit around the Earth?

• gravity

• other planets

• the sun

• the atmosphere

What causes day and night?

• Earth's rotation (part facing sun has day - part facing sun has night)

• Earth's revolution around sun (first 12 hours day - second 12 hours night)

• Earth's tilt (part facing sun has day - part facing sun has night)

How long is one rotation of the Earth?

• 365 days (one year)

• 7 days

• 24 hours (one day)

• 28 days (one month)

(Trick question) WHO is moving when you see the sun, moon, and stars rising in the east and setting in the west?

• the sun is moving

• Earth is spinning

• the stars are moving

• the horizon is moving

Name the two things that make it possible for living things to be able to stay on Earth?

• Earth's atmosphere keeps us from overheating, but also holds the warm air in.

• Earth has only one moon.

• Earth rotates quickly on its axis (keeping temps not too hot and not too cold).

• Earth's gravity holds it into its orbit.

What does NOT cause the seasons?

• the tilt of the Earth, letting different surfaces receive more sunlight

• how close the Earth is to the sun

• the revolution of the moon around the Earth

• the eclipses