Planets
Space Objects
Space Science
Particle Theory
Solids
Gases
Liquids
100

The closest planet to the sun

Mercury

100

What force keeps an object in orbit?

What is gravity?

100

How long does it take Earth to orbit the sun?

What is one year?

100

Everything that has volume and mass.

What is matter?

100

Intermolecular forces in solids are very ____.

What is strong?

100

The intermolecular forces in a gas are ____ _____.

What is very weak?

100

The intermolecular forces in liquids are ____.

What is weak?

200

The ringed planet

What is Saturn?

200

What is the main natural satellite of Earth?

What is the moon?

200

Where is the asteroid belt located?

Where is, between Mars and Jupiter?
200

All matter consists of this.

What is Particles?

200

Solids have a fixed _____ and ______.

What is shape and volume?

200
Gas spreads because while its mass stays the same, its ______ increases.

What is volume?

200

The volume of a liquid will change based on the _____ and _____ of its container.

What is volume and shape?

300

Which inner planet is the largest?

What is Earth?

300

Which type of artificial satellite is sent on long space journeys and typically does not come back to Earth?

What is a probe?

300

How long is one rotation of Earth?

What is one day?

300

The force that holds particles together.

What is intermolecular force?

300

Particles in a solid _____ in place.

What is vibrate?

300

When placed in a container, gas will _____.

What spread to fill it?

300

The conversion of a liquid to a solid.

What is freezing?

400

Pluto is now known as what type of planet?

What is a dwarf planet?

400

How many moons does Mars have?

Two

400

What does ISS stand for?

What is International Space Station?

400

The energy that makes particles move.

What is kinetic energy?

400

The conversion of a solid to a liquid.

What is melting?

400

The conversion of a gas to a liquid.

What is condensation?

400

The conversion of liquid to gas.

What is evaporation?

500

Which planets are known as the inner planets?

What are Mercury, Venus, Earth, and Mars?

500

A massive, super dense object in space that does not allow light to escape from it

What is a black hole?

500

What do we call the distance from the earth to the sun?

What is an Astronomical Unit?

500

The speed at which particles move is influenced by this.

What is temperature?

500

The conversion of a solid into a gas when it skips the liquid phase.

What is sublimation?

500

The conversion of gas to solid when it skips the liquid phase.

What is deposition?

500

The temperature at which a liquid becomes a gas is known as its _____ _______.

What is boiling point?