Chapter 4 Science Vocabulary

What is a gas giant?

• A small rocky planet

• A very large planet made up mostly of gases

• A star that is very far away

• A moon that orbits a planet

Which planets are considered inner planets?

• Jupiter, Saturn, Uranus, Neptune

• Mercury, Venus, Earth, Mars

• Earth, Mars, Jupiter, Saturn

• Venus, Earth, Neptune, Pluto

What does it mean to magnify an object?

• To make an object appear smaller

• To make an object appear larger

• To change the color of an object

• To move an object closer

What is a moon?

• A star that emits light

• A small, rounded body that orbits a planet

• A large planet that orbits the sun

• A comet that passes by Earth

What does it mean to orbit?

• To stay still in space

• To move in a path, usually around a planet or a star

• To explode in space

• To change direction randomly

Which planets are considered outer planets?

• Mercury, Venus, Earth, Mars

• Jupiter, Saturn, Uranus, Neptune

• Earth, Mars, Jupiter, Saturn

• Venus, Earth, Neptune, Pluto

What is a planet?

• A small rock in space

• A large body in space that orbits a star

• A star that emits light

• A comet that passes by Earth

What is rotation?

• A complete stop of a planet

• A complete spin, or turn, of a planet or other body

• A movement in a straight line

• A change in size of a planet

What is the solar system?

• Only the sun

• The sun and the planets, moons, and other objects that orbit the sun

• Only the planets

• Only the moons

What is a space probe?

• A spacecraft that carries people

• A craft that explores outer space carrying instruments, but not people

• A satellite that orbits Earth

• A telescope used on Earth