Solar System Quiz

What comprises more than 98% of the mass of the entire solar system?

• Mars

• Neptune

• The Sun

• Jupiter

Who proposed a Sun-centered model of the solar system in 1543?

• Tycho Brahe

• Johannes Kepler

• Nicolaus Copernicus

• Aristarchus of Samos

What did Johannes Kepler realize about the planets' orbits around the Sun?

• They move in spirals

• They move in straight lines

• They move in ellipses

• They move in circles

What is the term used for the collection of rocky ice balls beyond the orbit of Neptune?

• Protoplanetary Disk

• Asteroid Belt

• Kuiper Belt Objects

• Oort Cloud

What is the reason for the flatness of the solar system?

• The gravitational pull of the Sun

• The random motion of the planets

• The shockwave from an exploding star

• The balance of the collapsing cloud

What is the main reason for the formation of gas giants farther from the Sun?

• The presence of rocky material

• The high temperature

• The low temperature

• The presence of hydrogen and helium

What is the main reason for the formation of rocky planets closer to the Sun?

• The presence of hydrogen and helium

• The low temperature

• The high temperature

• The presence of rocky material

What is the main reason for the formation of the Oort Cloud?

• The shockwave from an exploding star

• The gravitational pull of the Sun

• The random motion of the planets

• The balance of the collapsing cloud