Earth's Crust: Caves and Earthquakes

Contributor: Victoria Surface. Lesson ID: 10501

Ever been in an earthquake or explored a cave? One is scary, the other is amazing! How do they happen? With Bill Nye, online games, NOAA, and neat projects, learn about what goes on inside the earth!


Earth Science

learning style
Auditory, Visual
personality style
Lion, Otter
Grade Level
Intermediate (3-5)
Lesson Type
Dig Deeper

Lesson Plan - Get It!

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  • What happened to cause these huge cracks in the road shown above?

There are internal and external forces constantly changing the earth.

  • Internal forces cause changes that happen inside the earth.
  • External forces cause changes that happen outside the earth.

In this lesson, explore stalactites, stalagmites, and earthquakes.

As you learn, take notes on the Graphic Organizer – Notes, found under the Downloadable Resources in the right-hand sidebar.

Watch the video below for an introduction to caves. You can always pause to take notes!

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Keep adding to your notes as you answer these questions.

  • What is the difference between stalactites and stalagmites?
  • How do they grow?

Check out What's the difference between stalactites and stalagmites? to learn more.

  • How do you remove sapphires from the earth?
  • What do you notice about a sapphire before it’s cut and after it’s cut?

Next, watch another video to learn about earthquakes. Remember to take notes!

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  • What causes earthquakes?
  • What does a seismograph do?

After taking notes, move on to the Got It? section.

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