Astronomy Flashcards

Front

What is the Big Bang Theory?

Back

It is the theory that the universe began from a massive explosion, which created atoms, stars, and galaxies over time.

Front

Define the Cosmic Inflation Theory.

Back

A theory suggesting that the universe expanded extremely fast before the Big Bang, doubling in size repeatedly due to an explosion.

Front

What is "Red Shift"?

Back

It is the change in light color from galaxies moving away from Earth, indicating that the universe is expanding.

Front

Name the largest source of energy for Earth.

Back

The Sun.

Front

How many planets are in our Solar System?

Back

There are eight planets.

Front

What is the primary difference between planets and moons?

Back

Planets orbit the Sun, while moons orbit planets.

Front

What are asteroids?

Back

Large chunks of rock or metal in outer space, often located in the asteroid belt between Mars and Jupiter.

Front

What is a comet?

Back

A small icy body that orbits the Sun and forms a tail when it is close to the Sun.

Front

How was the Moon formed, according to scientists?

Back

It formed from rocks and dust left after an object the size of Mars hit the Earth.

Front

What is the temperature range on the Moon?

Back

About 107°C (day) to -153°C (night).