Each day, the water level at the coast rises and lowers (called a tide). Sometimes, the water comes in and covers more land (high tide), and other times, it goes out and shows more sand (low tide). This happens because the moon pulls on the water.

Let’s compare the difference between high and low tides to see what tides look like at different times of day.

Illustration comparing a dock at low tide and high tide. The low tide image shows the dock's pilings exposed, with water levels significantly lower and boats resting on muddy or sandy ground.
Low Tide
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SEE, THINK, WONDER

  1. Look Closely
    • Write down three things you notice about each picture. Be specific!
  2. Discuss with a Partner
    • Why do you think the water is different in both pictures?
  3. Get Curious
    • What do you still wonder about these images?
    • Write down two questions you have! Here are some ideas to get you started:
      • Why do tides move up and down?
      • What might happen to a tide if it’s stormy?