Planets of our Solar System

A planet is a .............. body that is:

- In orbit around the sun.

- Has sufficient mass for its self gravity to maintain its almost round shape.

- To qualify as a planet it must orbit around the sun

List the planets in order from the sun.

Jupiter is the largest planet

• True

• False

Mercury has an atmosphere

• True

• False

It takes Earth 23.934 hours to complete a rotation on its axis and 365.26 days to complete an orbit around the sun.

• True

• False

What is a relatively small, inactive, rocky body orbiting the Sun?

• Comet

• Asteroid

• Meteor

................... are objects in space that range in size from dust grains to small asteroids. Think of them as “space rocks.

• Meteoroids

• Meteor

• Meteorite

Mercury, Venus, Earth and Mars are all Terrestrial planets

• True

• False

A ........... planet is composed mainly of gases in various physical forms, depending on the temperature and the pressure.

The smallest asteroid , Ceres, is also a dwarf planet

• True

• False