Intro to the Solar System

Which model replaced the geocentric model of the universe?

• Ptolemaic model

• Aristotelian model

• Copernican model

• Newtonian model

What does the term 'solar' in 'solar system' refer to?

• The Moon

• The Sun

• The Earth

• Jupiter

What characteristic is NOT used to define a planet?

• Being the largest object in its orbit

• Orbiting the sun

• Being round

• Having moons

What leads to the formation of a protostar in the solar system?

• The cooling of the solar nebula

• The fusion of helium into hydrogen

• The spinning of the solar disk

• The collapse of a cloud due to gravity

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Why are the inner planets rocky and the outer planets gaseous?

• Inner planets are older

• Outer planets have less gravity

• Outer planets are closer to the sun

• Inner planets couldn't hold light gases