Exploring Space Vocabulary

What is a satellite?

• A satellite is a form of energy.

• A satellite is a large planet.

• A satellite is a type of star.

• A satellite is an object that orbits a planet or celestial body.

Which force keeps planets in orbit around the sun?

• Magnetic force

• Gravitational force

• Frictional force

• Centrifugal force

What is the name of the collection of celestial bodies that includes the Earth?

• Galaxy

• Asteroid Belt

• Solar System

• Universe

What is a galaxy?

• A galaxy is a massive system of stars, gas, dust, and dark matter bound by gravity.

• A galaxy is a collection of only dark matter.

• A galaxy is a type of star.

• A galaxy is a small cluster of planets.

Who are astronauts?

• Astronauts are people who study marine biology.

• Astronauts are scientists who only work on Earth.

• Astronauts are trained individuals who travel into space for exploration and research.

• Astronauts are individuals who pilot commercial airplanes.

Which term refers to large celestial bodies that orbit stars?

• Moons

• Planets

• Comets

• Asteroids

What is the primary force that governs the motion of objects in space?

• Electromagnetism

• Friction

• Magnetism

• Gravity

What is the difference between a planet and a moon?

• A planet is smaller than a moon.

• A planet orbits a star; a moon orbits a planet.

• A moon orbits a star; a planet orbits a galaxy.

• Planets are made of gas, while moons are made of rock.