The Solar System
The name of our solar system
Milky Way
The German word meaning "the ground"
Earth
Number of days to go around the sun
The farthest planet from the sun
Neptune
The age of the Earth
4.5 billion/4.6 billion years old
Earth is divided into two ________
Hemispheres
The planet, besides Earth, that once contained water
Mars
The reason why Earth bulges out at the equator
Gravity
The definition of orbit
The path Earth takes around the sun
The cause of the Grand Canyon
Erosion
The reason why the Earth have seasons
Earth's axis does not run straight up and down in relation to the sun/tilt of the Earth's axis
The relation of the Moon to the Earth
A natural satellite
The order of planets in order from closets to farthest to the sun
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
The era when the Atlantic Ocean was formed
Mesozoic era, a division of the Phanerozoic era
When its Winter, this [part of Earth] is farthest from the sun