Sky From Earth
Earth in Space
Earth in Space Pt.2
Gravity and Motion
Gravity and Motion Pt.2
100

This is Earth's only natural satellite.

What is the moon?

100
This causes day and night.

What is rotation?

100

Earth moves in two major ways.

What is rotation and revolution?

100

This attracts all objects toward each other.

What is gravity?

100
Weight can change but this does not change.

What is mass?

200

This is a pattern or group of stars.

What is constellations?

200

This takes the Earth one year or 365 days to complete.

What is a revolution?

200

It is this season in the northern hemisphere when it is tilted towards the sun. 

What is summer?

200

The force of gravity on an object is called this. 

What is weight?

200

These two things work together to keep planets in their orbits.

What is gravity and inertia?

300

The sun looks like it moves east to west across the sky because of this. 

What is apparent motion?

300

Earth's orbit is also called this.

What is an ellipse?

300

This is when the sun is appears furthest north (longest and shortest days of the year)

What is a solstice?

300

The tendency of an object to resist a change in motion.

What is inertia?

300

This is a push or a pull.

What is force?

400

These are the reasons Earth has seasons.

What is it is tilted on its axis as it revolves around the sun. 
400

This is a system of organizing time.

What is a calendar?

400

This is when day and night are equal.

What is an equinox?

400

An object at rest will stay at rest, while an object in motion will stay in motion.

What is Newton's first law of motion?

400

This states that every object is attracted to every other object.

What is Newton's law of universal gravitation?

500

These 3 criteria make up the definition of a planet.

What is orbits the sun, rounded by its own gravity, and cleared its orbit.

500

When it is winter in the southern hemisphere, it is summer where?

What is the northern hemisphere?

500

A solstice happens during these two seasons.

What is winter and summer?

500

Gravity decreases as distance does this. 

What is increases?

500

The more mass an object has the more ______ it has. 

What is inertia?

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