Moon Phases
Eclipses
Seasons
Gravity and Inertia
Vocabulary
100

This is how many days it takes for the moon to complete one cycle.

What is 28-29 days?

100

When the moon is in the earth's shadow, we see this phenomenon.

What is a lunar eclipse/blood moon?

100

We get this season when the earth is tilted toward the sun.

What is summer?

100

An invisible pulling force.  Anything with mass has this.

What is gravity?

100

The amount of matter in an object.

What is mass?

200

The moon phase that comes after a 3rd quarter half moon.

What is a waning crescent?

200

When the moon completely blocks the sunlight from a small portion of the earth.

What is a solar eclipse?

200

When the Northern Hemisphere is experiencing fall, the Southern Hemisphere is experiencing this season.

What is spring?

200

An object in motion stays in motion unless otherwise acted upon.

What is inertia?

200

When the sun hits the earth at an angle.

What is indirect light?

300

We see this moon phase when the earth is between the sun and the moon.

What is a full moon?

300

This is why solar eclipses are more rare than lunar eclipses.

What is the moon can only block the light from earth in small portions because is it so small compared to earth.

300

This is how long it takes for the earth to revolve around the sun once.

What is 365.25 days?

300

If we took this away, the planets would all fly off into outer space.

What is the gravity of the sun?

300

The earth's movement on its axis.

What is rotation?

400

We see this moon phase when the moon is between the sun and the earth.

What is a new moon?

400

This is about how often solar and lunar eclipses occur.

What is about every 6 months?

400

This is the direction the earth revolves around the sun.

What is counter-clockwise?

400

If we took this away, the planets would all be sucked into the sun.

What is inertia?

400

The earth's movement around the sun.

What is revolution?

500

The moon phase that happens about 14 days after a new moon.

What is a full moon?

500

This is the reason why we don't see a lunar or solar eclipse every month.

What is because the moon's orbit is tilted in relation to the earth, so it doesn't line up perfectly every month.

500

These are the two reasons why we have seasons.

What is the tilt of the earth and the revolution of the earth around the sun?

500

These are two things that affect gravitational pull.

What is mass and distance?

500

A system of millions or billions of stars held together by gravitational attraction.

What is a galaxy?