Layers of the Earth

What is the diameter of the Earth?

• Close to 12,000 miles

• Nearly 8,000 miles

• Approximately 5,000 miles

• About 10,000 miles

How thick is the Earth's crust under the oceans?

• Approximately 30 to 35 miles

• Nearly 20 to 25 miles

• Around 10 to 15 miles

• About 3 to 5 miles

What are the two types of Earth's crust?

• Upper and Lower

• Solid and Liquid

• Continental and Oceanic

• Mantle and Core

What is the mantle made of?

• Molten iron and nickel

• Water and Ice

• Sand and Gravel

• Extremely hot, dense rock

What causes earthquakes?

• Volcanic activity

• Plate tectonics

• Asteroid impacts

• Tidal forces

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

What is the temperature at the top of the mantle?

• Approximately 1600 degrees Fahrenheit

• Around 800 degrees Fahrenheit

• About 100 degrees Fahrenheit

• Close to 3200 degrees Fahrenheit

Tags

NGSS.MS-PS3-4

What are the two metals that make up the outer core?

• Nickel and Iron

• Gold and Silver

• Aluminum and Mercury

• Copper and Zinc

How thick is the mantle?

• Nearly 3000 miles

• Approximately 1800 miles

• Around 800 miles

• About 500 miles

What is the lithosphere made of?

• Molten iron

• Semi-molten rock

• Solid and rigid rocks

• Liquid magma

What is the main difference between the inner core and the outer core?

• The inner core is cooler than the outer core

• The inner core is solid, while the outer core is liquid

• The outer core is made of rock, while the inner core is made of metal

• The outer core is solid, while the inner core is liquid