Earth's Interior

What are the three main layers of the Earth?

• Crust, mantle, core

• Crust, rock, lava

• Soil, bedrock, core

• Mantle, crust, lava

Which characteristics help us determine the difference between Earth's layers?

• Color and texture

• Size, composition, temperature, and pressure

• Density and state

• Hardness and transparency

What is the primary source of the high temperatures inside Earth?

• The sun's radiation

• Combustion of fossil fuels

• Heat left over from the formation of the planet

• Lightning strikes

What role do radioactive substances inside Earth play in terms of temperature?

• They cool down the interior

• They have no effect on the temperature

• They absorb heat from the sun

• They release energy that heats the interior

How does pressure inside Earth increase as you go deeper?

• It decreases due to less gravitational pull

• It remains constant throughout

• It increases because of the weight of the rock above

• It fluctuates with the Earth's rotation

Tags

NGSS.MS-PS2-4

What is the outermost layer of the Earth called?

• Mantle

• Core

• Crust

• Lithosphere

What is the Earth's crust made of?

• Water, air, and plants

• Solid rock, soil, and water

• Gases and minerals

• Ice and snow

Where is the Earth's crust thickest?

• Under the ocean

• On flat plains

• Under high mountains

• In desert areas

What is the crust beneath the ocean called?

What type of rock mostly makes up the oceanic crust?

(a)  

• Granite

• Limestone

• Basalt
• Slate