Gravity

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

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

Back

The Sun is the main source of gravity in our solar system, holding the planets in their orbits.

Front

What happens to the Sun when it runs out of hydrogen?

Back

When the Sun runs out of hydrogen, it will expand into a red giant.

Front

What are the inner planets of our solar system?

Back

The inner planets are Mercury, Venus, Earth, and Mars.

Front

What are the outer planets of our solar system?

Back

The outer planets are Jupiter, Saturn, Uranus, and Neptune.

Front

What is a nebula?

Back

A nebula is a giant cloud of gas and dust in space, often the birthplace of stars.

Front

How do planets form in a solar system?

Back

Planets form from the same cloud of gas and dust that collapses to form a star.

Front

What is the role of gravity in the formation of a solar system?

Back

Gravity pulls together gas and dust to form stars and planets, creating a solar system.

Front

What is a red giant?

Back

A red giant is a late stage in a star's life cycle when it expands and cools after exhausting its hydrogen fuel.

Front

What is the difference between terrestrial and gas giant planets?

Back

Terrestrial planets are rocky (Mercury, Venus, Earth, Mars), while gas giants are mostly made of gas (Jupiter, Saturn, Uranus, Neptune).