PT 4 Earth Formation

Which was created first?

• Sun

• Earth

• Theia

• Moon

Smaller particles collecting together into larger and larger objects is called . . .

• accretion
• contraction
• explosion
• rotation

The sun and all the planets and other bodies that revolve around it make up the

• universe
• galaxy
• solar system
• neighborhood

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

Planets form by a process called...

• accretion
• dark matter interactions
• electromagnetic radiation
• sun-dropping

The moon probably formed when...

• A piece of the Earth broke off due to it's fast rotation

• A Mars-sized object called Theia rammed into the Earth

• Earth captured the moon gravitationally as it attempted to pass by.

• the molten bubble of the Earth budded.

What forms in the very center of the accretion disk?

• A protostar

• A planet

• A protoplanet

• A planetesimal

The group of outer planets are known as:

• The Terrestrial Planets
• The Gas Giants
• The Inner Planets
• The Rocky Planets

What is believed to have happened to a nearby star, setting in motion the formation of the solar system out of a nebula?

• star froze

• star exploded into a supernova

• star split in two

• star became a planet eater and roamed the universe

About how old is Earth?

• 4 thousand years old

• 4.6 million years old

• 4.6 billion years old

• 406 trillion years old

Tags

NGSS.MS-ESS1-4

The group of Inner planets are known as:

• The Blue Planets

• The Gas Giants

• The Hot Planets

• The Terrestrial (Rocky) Planets