4.6 Space

Front

Who believed that the Earth is the center of the universe?

Back

Aristotle and Ptolemy believed that the Earth is the center of the universe.

Front

Why does the Moon orbit Earth?

Back

The Moon orbits Earth due to the gravitational attraction between the Moon and Earth.

Front

What is the atmosphere of the Moon like?

Back

The Moon has no atmosphere.

Front

What is the Moon's diameter compared to Earth?

Back

The Moon's diameter is 1/4 that of Earth.

Front

How long does it take for the Earth to revolve around the Sun?

Back

It takes 365 days for the Earth to revolve around the Sun.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other.

Front

What is the Sun?

Back

The Sun is a star at the center of our solar system that provides light and heat.

Front

What are planets?

Back

Planets are large celestial bodies that orbit a star.

Front

What is a satellite?

Back

A satellite is a celestial body that orbits a planet.

Front

What is the difference between a planet and a star?

Back

A planet orbits a star, while a star generates its own light and heat.