Front

What are the inner planets of the solar system?

Back

Mercury, Venus, Earth, and Mars.

Front

What is the theory that explains the formation of the solar system?

Back

Nebular Theory.

Front

What is the current state of the universe?

Back

Expanding.

Front

How do stars form?

Back

When a nebula collapses and nuclear fusion occurs.

Front

How long ago did the solar system begin to form?

Back

5 billion years ago.

Front

What is a nebula?

Back

A large cloud of gas and dust in space, often the birthplace of stars.

Front

What is nuclear fusion?

Back

The process by which two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What role do gravity and pressure play in star formation?

Back

Gravity pulls the gas and dust together, while pressure from nuclear fusion counteracts gravitational collapse.

Front

What is the difference between inner and outer planets?

Back

Inner planets are rocky and terrestrial (Mercury, Venus, Earth, Mars), while outer planets are gas giants (Jupiter, Saturn, Uranus, Neptune).

Front

What is the Big Bang Theory?

Back

A scientific explanation for the origin of the universe, stating it began from a singular point and has been expanding ever since.