Article Questions: Formation of Our Solar System

What are the four inner planets in our Solar System?

• Jupiter, Saturn, Uranus, Neptune

• Mercury, Venus, Earth, Mars

• Earth, Mars, Jupiter, Saturn

• Venus, Earth, Mars, Jupiter

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What are the four outer planets in our Solar System?

• Mercury, Venus, Earth, Mars

• Jupiter, Saturn, Uranus, Neptune

• Venus, Earth, Mars, Jupiter

• Earth, Mars, Jupiter, Saturn

How did the Sun come into being?

• It formed from a giant cloud of dust and gas

• It was created by a collision between two planets

• It was always there, it didn't have a beginning

• It was formed by the explosion of a supernova

What is an accretion disk?

• A disk-shaped cloud of gas and dust around a star.

• A disk-shaped cloud of asteroids in the Solar System.

• A disk-shaped cloud of gas and dust around a planet.

• A disk-shaped cloud of comets in the Solar System.

How did the planets in our Solar System form?

• They were created by a collision between two stars.

• They were formed from the explosion of a supernova.

• They were born from the clouds of gas and dust that orbit new stars.

• They were always there; they didn't have a beginning.

What conditions on Earth make it suitable for life?

• It is too hot and too close to the Sun.

• It is too cold and too far away from the Sun.

• It is just right, not too hot or too cold, not too big or too small.

• It is too big and too close to the Sun.

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What is the origin of the Moon?

• It was formed from a collision between two planets

• It was always there; it didn't have a beginning

• It was created by a giant cloud of gas and dust

• It was captured by Earth's gravity from another star system

Why was Pluto downgraded from a planet to a dwarf planet?

• It is smaller than Earth's Moon

• It is made mostly of gas and not rock

• It does not have enough gravity to clear its neighborhood

• It is too far away from the Sun

What is an extrasolar planet?

• A planet that orbits the Moon

• A planet that orbits a star outside of our Solar System

• A planet that orbits the Sun

• A planet that is not made of rock

How do astronomers detect exoplanets?

• By directly imaging the planet

• By measuring the effect of their gravity on the parent star

• By observing how the light of the parent star dims as the planet passes in front of it

• By capturing the planet and bringing it back to Earth

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