What is mass?
Space object occupies
Volume of liquid
Force of gravity on object
Amount of matter in an object
What is volume?
Space an object occupies
How heavy an object feels
Density of an object
Amount of matter in object
What is density?
Mass per unit volume
Weight of an object
What is an orbit?
Route taken by satellites
Flight path of a bird
Path of object around another object
A circular path in space
What shape is a planet's orbit typically?
Circular
Square
Triangular
Elliptical
Which force keeps planets in orbit around the Sun?
Gravity
Magnetism
Friction
Wind
What makes a dwarf planet different than a planet
Whether it has enough mass to be mostly round
What it orbits
What else is on the path of its orbit
Whether or not it has its own satellites
What makes a moon different than a planet
Whether or not it has enough mass to be mostly round
what it orbits
What else is in the path of its orbit