Earth, Sun & Moon
The Universe
Planetarium
Newton's Laws
Miscellaneous
100

Caused by the earth's rotation on its axis

What is day and night?

100

Theory of how the universe was formed.

What is Big Bang Theory?

100

Located between Mars and Jupiter.

What is the asteroid belt?

100

A push or pull.

What is force?

100

groups of two or more stars.

What is binary star system?

200

One complete orbit around the sun, one year

What is revolution?

200

Spiral galaxy in which we live.

What is the Milky Way?

200

Small dense planets that have a rocky surface.

What are inner planets?

200

Force of gravity on an object.

What is weight?

200

Newton's first law.

What is objects in motion remain in motion, objects at rest remain at rest unless acted upon by an unbalanced force?

300

Caused by the earth's tilt on its axis

What are seasons?

300

Formed from a giant ball of gas and dust.

What is a solar/star system?

300

Reason why giant planets' atmospheric gases can not escape.

What is strong gravitational pull?

300

Tendency for an object to resist a change in motion.

What is inertia?

300

Increasing amount of moonlight from new moon to full moon.

What is waxing?

400

Occurs when the moon is directly between the earth and the sun.

What is solar eclipse?

400

Two factors that keep the planets in orbit.

What are gravity and inertia?

400
Planet that rotations on its side like a rolling ball.

What is Uranus?

400
force equation

What is mass times acceleration?

400

The rate in which velocity changes.

What is acceleration?

500

Occurs when neither end of the earth's axis is pointed towards the sun, and is directly over the equator

What is equinox?

500

Galaxies that have no gas or dust in order to expand.

What are elliptical galaxies?

500

hottest planet in our solar system, spins in the opposite direction.

What is Venus?

500

created when two objects rub against each other.

What is friction?

500

Thought to be dark spots on the moon.

What are oceans?