Formation of the Solar System

Why are the rocky planets small?

• Because they are made up of heavier elements

• Because they are further away from the Sun

• Because they formed from hydrogen and helium

• Because they have large cores

What is the frost line?

• The boundary where temperatures are low enough for gases to condense

• The region where comets originate

• The orbit of Jupiter

• The area of the outer solar system

Where do long-period comets come from?

• The Kuiper Belt

• The Oort Cloud

• The inner solar system

• The rocky planets

What is an exoplanet?

• A planet that orbits the Sun

• A planet made up of rock and ice

• A planet that orbits a star other than the Sun

• A planet with a slow orbit

What are comets made of?

• Rock and ice

• Gas and dust

• Hydrogen and helium

• Metals

Tags

NGSS.MS-PS1-1

What are gas giants mostly composed of?

• Rock and ice

• Hydrogen and helium

• Water and methane

• Metals

Where is the Kuiper Belt located?

• Inside Jupiter's orbit

• Outside the frost line

• Between Mars and Jupiter

• Beyond Neptune's orbit

How do astronomers search for exoplanets?

• By observing a dip in the light from the star

• By studying the Oort Cloud

• By analyzing the composition of comets

• By measuring the temperature of gas giants

What unit do astronomers use to measure distances between stars and galaxies?

What is at the centre of most galaxies?

• Dust

• Stars

• Supermassive black holes

• Gas