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Sedimentary Rocks micro-lesson

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Learning time​

Kids learn by watching short, engaging video lessons.

There are three different types of rocks. Today, we’re looking at sedimentary rocks. You may be wondering why I'm in the sea at the moment, that's because that's where sedimentary rocks are made. Sedimentary rocks begin to form when different materials and sediments collect at the bottom of the ocean. As time goes on, all of these sediments begin to pile on top of each other, creating lots and lots and lots of layers. So how do all those sediments stay together to create big rocks? Well, because the layers of sediment are so tight after so many layers, it squeezes all the water out that was there because it's in the sea. And salt, yes, the salt that we put on our food acts as a glue and glues the sediments together to create a rock. A common sedimentary rock is sandstone. Here you can see the layers of sediment.

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Answer time

Kids earn more screen time by answering fun educational questions.

Here are some example of questions about this video that kids may be asked in the 1Question app to earn screen time.

  • Where are sedimentary rocks formed?

    1) In the sea
    2) In the desert
    3) In a jungle
    4) In a volcano
  • What do the sediments form at the bottom of the ocean?

    1) Layers
    2) Mountains
    3) Different piles of rocks
  • What are sedimentary rocks formed from?

    1) Materials and sediments
    2) Sand
    3) Chalk
    4) Grass
  • How are the sediments held together to form a rock?

    1) Salt acts as a glue after water is pushed out from the gaps between the sediments
    2) Using sticky tape
    3) Because of the length of time it takes
    4) Using other rocks
  • Yes/No - Sandstone is an example of a sedimentary rock

    1) Yes
    2) No

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Meet your educator

Our micro-courses are developed and delivered by qualified educators from around the world.

Niamh Clark

Niamh Clark

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