Early astronomers believed __________ was the center of the universe and all other heavenly bodies.

• sun

• moon

• Earth

• comets

What is the center of our solar system?

• the Earth

• the sun

• the moon

• the Milky Way

Tags

NGSS.MS-ESS1-2

Our solar system has _________________ planets

• seven

• nine

• six

• eight

Which planet was thought to be the only one with rings?

• Jupiter

• Uranus

• Saturn

• Neptune

Order the planets from closest to furthest from the sun.

• 3

• Venus

• 1

• Mercury

• 4

• Earth

• 2

• Mars

Order the following from closest to furthest from the sun.

• Saturn

• Uranus

• Jupiter

• Neptune

Planets that are made up mostly of rocks and minerals are _______________ planets.

• cosmic

• terrestrial

• otherworldly

• heavenly

Sort the planets into the correct category.

Groups:

(a) Terrestrial planets

,

(b) Gas Giants

• Uranus

• Earth

• Saturn

• Venus

• Mercury

• Mars

• Neptune

• Jupiter

Tags

NGSS.MS-ESS1-3

Planets that consist mostly of gas are considered ______________ ________________.

• earth bound

• global giants

• vapor giants

• gas giants

Which planet is smaller than all other planets, heavily cratered, and located closet to the sun?

• Mercury

• Mars

• Pluto

• Venus

Tags

NGSS.MS-ESS1-3