Explore 1 Review - Accretion

The process of rocky material growing in size due to repeated collisions with other space debris is called:

• Erosion
• Accretion
• Subduction
• Sedimentation

During the formation of Earth, small space rocks are attracted to each other by

• gravitational forces

• light forces

• solar eclipses

• white dwarfs

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

______ is the attractive force between any two objects that depends on the objects mass and distance to each other.

• Weight

• Gravity

• Net Force

• Rolling Friction

Tags

NGSS.MS-PS2-4

Approximately, how old is the Earth?

• 4.6 billion years

• 310 million years

• 2.8 million years

• 5250 years

Tags

NGSS.MS-ESS1-4

During the formation of the solar system, when the gas, dust, and rock began to spin it formed a(n) ______________.

• accretion disc

• planet

• star

• asteroid

Don't confuse the solar system with the galaxy. Which is larger, the solar system or the galaxy?

• galaxy

• solar system

• Neither, they are both the same size.

What do we call the time when there was an increased number of meteorites impacting the Earth?

• heavy bombardment

• protoplanets

• accretion

• Just another day on Earth

Put the following events in order from beginning to end.

• Earth cooling

• nebula

• accretion

• accretion disc

• heavy bombardment

Tags

NGSS.HS-ESS1-6

How did scientists estimate the age of the Earth?

• radiometric dating

• accretion

• looking at fossils

• asking God

Tags

NGSS.HS-ESS1-6

What are comets made of?

• ice, rock, and dust

• metals

• carbon

• gas

Tags

NGSS.MS-PS1-1