Solar System

Which of the following criteria are used to define a planet? Choose all correct answers.

• must have a diameter of at least 1,000,000 miles

• must be round

• must orbit its host star

• must clear its orbit of all other objects

• must have a moon

What is difference between a planet and dwarf planet?

• A planet is closer to the Sun than a dwarf planet.

• Planets have moons, and dwarf planets do not.

• Dwarf planets have not cleared their orbits of all other objects, like planets have.

• A planet has a larger diameter than a dwarf planet.

How many planets are there in the solar system?

• 100

• 8

• 9

• 3

Tags

NGSS.MS-ESS1-3

Which planet is closest to the Sun?

• Mercury

• Earth

• Venus

• Mars

Tags

NGSS.MS-ESS1-3

What is the largest planet?

• Jupiter

• Saturn

• Earth

• Mars

• Venus

Tags

NGSS.MS-ESS1-3

How old is our solar system?

• 4.6 billion years old
• 4.6 million years old
• 9 billion years old
• 4.5 million years old

Tags

NGSS.MS-ESS1-4

A cloud of gas and dust from which bodies in space are formed

• photosphere
• nebula
• solar flare
• Sunspot

The group of inner planets are known as:

• The Terrestrial Planets
• The Gas Giants
• The Outer Planets
• The Hallow Planets

The group of outer planets are known as:

• The Terrestrial Planets
• The Jovian Planets

• The Ice Planets

• The Rocky Planets

_____ is believed to be the first planet that formed in our solar system?

• Jupiter

• Saturn

• Earth

• Mercury