Planets Review

What must an object do to be considered a planet according to the IAU?

• • Orbit an asteroid

• Orbit a moon

• • Orbit a star

• • Not orbit anything

What is the primary difference between a planet and a dwarf planet?

• • Dominance in its orbit

• • Mass

• • Orbit around a star

• • Size

What are the two main types of planets?

• • Comets and Asteroids

• • Moons and Stars

• • Terrestrial and Gas Giants

• • None of these

What does "terrestrial" mean?

• • Earth-like

• • Gaseous

• • Giant

• • Ice-like

What are the gas giants primarily composed of?

• • Gases

• • Ice

• • Metal

• • Rock

Tags

NGSS.MS-PS1-1

How do planets generally form?

• • By breaking away from stars

• • By matter clumping together due to gravity

• • From solar radiation

• • Through chemical reactions

What primarily forms the core of a terrestrial planet?

• • Gases like hydrogen

• • Heavier elements like iron

• • Ice

• • Light elements like helium

Tags

NGSS.HS-PS1-1

What happens to the gases surrounding less massive rocky cores when heated by their local star?

• • They form ice

• • They are retained

• • They blow away

• • They turn into rock

Tags

NGSS.MS-PS3-2

How many planets are in our solar system?

• 
  

• 6

• 8

• 9

• 10

Tags

NGSS.MS-ESS1-3

Which planets are located closer to the Sun?

• • Dwarf Planets

• • Gas Giants

• • Terrestrial Planets

• • None of these