Tides: Highs and Lows

Contributor: Victoria Surface. Lesson ID: 10712

What do the sun and moon have to do with the ocean? Explore the exciting world of tides and choose an exciting sea projects to complete!


Earth Science

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

Lesson Plan - Get It!

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Watch this short time-lapse video of the tide rising and lowering along the Canadian coast.

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The tide rolls in. The tide rolls out.

  • But why?
  • Why does the ocean water cover more of the beach at certain times and not as much at other times?

Well, it's all because of the moon and the sun.

  • But they are so far away, you say?

That's true, but they still greatly affect the tides. Find out how.

First, watch the video below to learn about high and low tides and how tides are caused by the gravitational pull of the moon and the sun.

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Now, answer these questions.

  • How are high tides and low tides produced?
  • How often do high tides and low tides occur?
  • What is a neap tide?
  • What is a spring tide?
  • How often do neap and spring tides occur?

If you need help, check the answers below.

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When you've got the idea, continue to the Got It? section for some great hands-on projects!

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