When is a Planet Not a Planet? Review

Front

What does the word 'approximately' mean?

Back

It means close to a certain value but not exactly.

Front

What is the opposite of 'approximately'?

Back

Exactly.

Front

What is 'diameter'?

Back

The distance from edge to edge through the center of a circle.

Front

What does the word 'spheres' refer to?

Back

Round three-dimensional objects.

Front

What is the main difference between rocky and gas planets in our solar system?

Back

Planets close to the sun are rocky, while planets far from the sun are gas.

Front

What does 'orbit' mean?

Back

To move around another object.

Front

What is a planet?

Back

A celestial body that orbits a star and is large enough to be rounded by its own gravity.

Front

What is the solar system?

Back

A collection of planets, moons, asteroids, comets, and other celestial bodies that orbit the Sun.

Front

What is gravity?

Back

A force that attracts two bodies towards each other.

Front

What is the difference between a planet and a dwarf planet?

Back

A dwarf planet does not clear its orbit of other debris, while a planet does.