Khan Academy Plate Tectonics

Jared from Fun Science Demos introduces the concept of Earth's structure and plate tectonics. He explains the layers of the Earth, including the crust, mantle, and core, and demonstrates how plate movements can cause earthquakes, form new crust, and create mountains. Using a model with spray cheese and graham crackers, he illustrates how plates move apart, slide past each other, and collide, leading to various geological phenomena. The video emphasizes the dynamic nature of Earth and encourages viewers to explore more about geology.

What is one limitation of the Earth model shown in the video?

• It cannot show the Earth's atmosphere.

• It cannot show the Earth's magnetic field.

• It cannot show the Earth's interior.

• It cannot show the Earth's rotation.

What lies beneath the Earth's crust?

• The atmosphere

• The mantle

• The core

• The ocean

Which layer of the Earth is directly beneath the crust?

• The atmosphere

• The core

• The lithosphere

• The mantle

What is the main characteristic of the Earth's mantle?

• It is hot and moving

• It is cold and static

• It is liquid and calm

• It is solid and immovable

What happens when tectonic plates move apart?

• Volcanoes erupt

• Earthquakes occur

• New crust forms

• Mountains form

What is the effect of the mantle's movement on the crust?

• It causes the crust to thicken

• It causes the crust to disappear

• It causes the crust to move

• It causes the crust to remain static

What geological event is caused by tectonic plates sliding past each other?

• Mountain formation

• Volcanic eruptions

• Earthquakes

• Tsunamis

What occurs when tectonic plates collide and one goes under the other?

• The plates stop moving

• A new continent forms

• A new ocean forms

• The plate melts

What is the result of continents colliding on tectonic plates?

• Rivers

• Mountains

• Volcanoes

• Earthquakes

What is the primary cause of the Earth's changing surface?

• Weather patterns

• Tectonic plate movement

• Solar activity

• Human activity