Structure of the Solar System

How many planets orbit the Sun in our Solar System?

• 7

• 8

• 9

• 10

Select the correct order of the planets, starting with the closest to the Sun.

• Mercury, Earth, Venus, Mars, Jupiter, Saturn, Uranus, Neptune

• Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, Neptune

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Uranus

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Which of these orbit planets?

• dwarf planets

• natural satellites

• artificial satellites

• comets

• asteroids

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is the force that keeps planets in orbit around the Sun?

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The planets move around the Sun in ________ orbits.

• Circular

• Elliptical

Tags

NGSS.MS-ESS1-1

Which of these materials are comets made from?

• rock

• dust

• metal

• ice

The closer a planet is to a star, the _____ its orbital speed.

• faster

• slower

Tags

NGSS.HS-ESS1-4

Two planets are orbiting a star.

Planet A has an orbital speed of 30 km/s.

Planet B has an orbital speed of 42 km/s.

Which planet has the smallest orbital radius?

• Planet A

• Planet B

Tags

NGSS.HS-ESS1-4

An artificial satellite is a man-made object that orbits a planet.

• True

• False

Tags

NGSS.MS-PS2-5

In a circular orbit, the ________ of a planet is constantly changing.

• speed

• velocity

Tags

NGSS.HS-ESS1-4