definitions
a natural object that orbits a planet
moon
What is the force that pulls the Earth to the sun
gravity
How long does it take the Earth to make one revolution around the sun
1 year
365 1/4 days
29.5 days
a complete spin on an axis
rotation
an object in space that produces its own energy, including heat and light
star
what is the force that pulls the Earth away from the sun
inertia
When it is summer in the southern hemisphere what season is it in the northern hemisphere
winter
what is a plain called on the moon
maria
What is Earth's axis tilted to
23 degrees
The path of an object as it revolves around another object in space
orbit
what combination of forces allow Earth to move in an ellipse around the sun
gravity and inertia
How fast does the Earth move around the Sun
19 miles per second
What is a valley called on the moon
rill
How long does it take Earth to make a rotation
24 hours
1 day
a mixture of ice, frozen gases, rock, and dust left over from the formation of the solar system
comet
why can you jump higher on the moon
less gravity
In what season are there more hours of daylight
summer
Why do footprints stay on the moon
the moon has no weather
How fast does the Earth spin
1,000 miles per hour
the appearance of the shape of the moon at a particular time.
phase
what two factors affect gravity
mass and distance
What is Earth's movement around the sun called?
ellipse
How hot can it get on the moon
253 degrees F
which direction does the Earth rotate
west to east