Earth Formation and Structure

What is the Big Bang?

• a theory that describes rapidly expanding dense hot matter that started cooling
• a law that describes how a solar system was formed

Tags

NGSS.HS-ESS1-2

Is a galaxy close to the Milky Way moving away from us slowly or quickly?

• slowly
• quickly

How old is the universe?

• 13.7 billions years
• 15.8 billion years ago

Tags

NGSS.HS-ESS1-2

What is the theory that explains the solar system's formation?

• Solar Nebula Theory
• Big Bang Theory

Explain the main events during the solar system's formation.

• Burst of energy, cloud of gas and dust, spinning, planet formation
• Condensation, burst of energy, expansion

Tags

NGSS.MS-ESS1-2

What is condensation?

• gas and dust particles sticking together
• Water forming on planets

Tags

NGSS.HS-ESS2-5

Why did the spinning cloud of dust and gas speed up?

• gravitational attraction
• Condensation

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

What are planetesimals?

• condensed mass of gas and dust
• small planets, similar to Pluto

Why are the inner planets rocky and the outer planets gaseous?

• inner- very hot and outer- very cold
• inner- cooler and outer

What is the frost line?

• where gasses can begin condensing
• the point where snow forms