Mystery Science: Spaceship Earth review

Front

What is the difference between a star and a planet?

Back

A star is a massive, luminous ball of gas that produces its own light, while a planet is a celestial body that orbits a star and does not produce its own light.

Front

What happens to the gravitational pull of a planet as its mass increases?

Back

The more mass a planet has, the more gravity it has.

Front

What is the 'just right' amount of light and temperature needed for a planet to support life?

Back

A planet needs the right balance of light and temperature to support plants and animals.

Front

How long does it take for Earth to orbit the Sun?

Back

A year is the time it takes Earth to complete one orbit around the Sun.

Front

Who is credited with inventing the telescope?

Back

Galileo is credited with inventing the telescope.

Front

What is the main source of light in our solar system?

Back

The Sun is the main source of light in our solar system.

Front

What is an orbit?

Back

An orbit is the path an object takes as it moves around another object in space.

Front

What is gravity?

Back

Gravity is the force that pulls objects toward each other, such as the force that keeps planets in orbit around the Sun.

Front

What are the two main types of planets in our solar system?

Back

The two main types of planets are terrestrial (rocky) planets and gas giants.

Front

What is a solar system?

Back

A solar system is a collection of planets, moons, asteroids, comets, and other celestial bodies that orbit a star.