Sedimentary Rocks micro-lesson
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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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Where are sedimentary rocks formed?1) In the sea2) In the desert3) In a jungle4) In a volcano
What do the sediments form at the bottom of the ocean?1) Layers2) Mountains3) Different piles of rocks
What are sedimentary rocks formed from?1) Materials and sediments2) Sand3) Chalk4) 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 sediments2) Using sticky tape3) Because of the length of time it takes4) Using other rocks
Yes/No - Sandstone is an example of a sedimentary rock1) Yes2) No
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