Definitions
Physics
Planets
Comets and asteroids
Meteoroids
100

All matter has this because it takes up space.

What is mass?

100

This property is why an object in motion stays in motion

What is inertia?

100

This planet is the largest in our system

What is Jupiter?

100

These icy celestial bodies have a tail as they orbit stars

What are comets?

100

These are small pieces of comets and asteroids

What are meteoroids?

200

This is what causes less massive objects to be pulled down to more massive ones

What is gravity?

200

This planet is closest to our sun.

What is Mercury?

200

These celestial bodies don’t have tail and are rocky 

What are asteroids?

200

This is when several objects burn in our atmosphere at once

What is a meteor shower?

300

How long it takes something to spin on its axis

what is orbital period?
300

These types of planets are made of gas

What are gas giants?

300

The vapor of a comet is made of these

What are volatile?

300

This is a meteoroid that enters our atmosphere

What is a meteor?

400

How long it takes something to revolve around another object

What is orbital period?

400

These types of planets are made of rock

What are terrestrial planets?

400

The core of a comet is called this.

What is a nucleus?

400

These meteoroids land on Earth

What are meteorites?

500

This is the length of one edge of a circle to the other edge going through the center

What is diameter?

500

This planet takes the longest time to orbit the sun

What is Neptune?

500

The atmosphere around a comet’s core is called this

what is the coma?
500

These meteoroids leave a trail of light in our sky that can be seen during the day

What are fireballs?