Solar System

Which inner planet has only a thin atmosphere?

• Mercury

• Venus

• Mars

The center of our solar system is the....

• Earth

• Sun

• Moon

• Asteroid belt

Tags

NGSS.MS-ESS1-2

There are _________ planets in our solar system.

• 6

• 7

• 8

• 9

Tags

NGSS.MS-ESS1-3

The _________ is a region between the planets Mars and Jupiter containing thousands of rocky objects that orbit the Sun.

• dwarf planets

• comets

• Asteroid belt

• Kuiper belt

• Oort cloud

The _______ exists much further out than the Kuiper belt and is at the very edge of the Solar System. Scientists believe it is made up of thousands of small ice objects.

• dwarf planets

• comets

• Asteroid belt

• Kuiper belt

• Oort Cloud

About 99.85% of the mass of the solar system is the __________.

• Asteroid belt

• Sun

• Moon

• planets

Tags

NGSS.MS-PS2-4

The inner and outer planets are separated by the __________.

• asteroid belt

• moon

• comets

• dwarf planets

What holds the planets in their orbits around the sun?

• gravity

• speed

• string

• air currents

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Does this graph show relative size or distance from the sun of the planets?

• It shows both size and distance.

• It does not show size or distance.

• It shows distance from the sun

• It shows relative size.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

This table shows the rotation period and revolution period for 6 planets, and Earth’s moon, all relative to Earth’s periods. Which 2 planets have shorter days than Earth?

• Jupiter and Saturn

• Venus and Mercury

• Mars and Jupiter

• Saturn and Moon

Tags

NGSS.MS-ESS1-3