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The rock cycle

 

The Rock Cycle


Rocks on Earth change all the time because of different things that happen to them. They can turn into different kinds of rocks over a long time. This is called the rock cycle, and it recycles the rocks on Earth

 

This image is a diagram illustrating the rock cycle. It shows various stages of the cycle, including the formation and transformation of different types of rocks due to natural processes like volcanic eruptions. The diagram is labeled “ROCK CYCLE,” and has an icon of a volcano erupting at the top. The cycle starts from magma, which cools down to form igneous rock. Igneous rock breaks down into sediment, which compresses into sedimentary rock. Sedimentary rock under heat and pressure transforms into metamorphic rock, which melts during volcanic eruptions, turning back into magma. The diagram uses arrows to indicate the flow of the cycle from one type of rock or material to another.

 

There are three kinds of rocks:

 

  • Igneous rocks are made from melted rock that cools down.
  • Sedimentary rocks are made from small pieces of rock that stick together in layers.
  • Metamorphic rocks are made from other rocks that change because of heat and pressure.

 

The rock cycle shows how rocks can change into each other. There are many ways for this to happen, such as weathering, erosion, melting, and squeezing. Here is an example:

 

  • Sedimentary rocks can change into metamorphic rocks if they get buried deep in the Earth and get hot and squeezed.
  • Metamorphic rocks can break into small pieces if they get exposed to the air and water.
  • The small pieces of rock can move with water or wind and settle in a new place.
  • The new place can have many layers of rock pieces that stick together and form new sedimentary rocks.

This image shows a diagram of the rock cycle, which is the process of how rocks change from one type to another over time. The diagram shows a cross-section of a landscape with a mountain, underground layers, and a water body. It also shows different types of rocks (igneous, sedimentary, and metamorphic) and the geological processes (melting, weathering, erosion, etc.) that transform them.

 

🗿 Knowledge Check: The Rock Cycle

Test your knowledge of how rocks form and change over millions of years.

1. Which process involves the breaking down of rocks by ice, rain, and temperature changes?

2. Sedimentary rock is formed when layers of sediment are squashed together. What is this process called?

3. What type of rock is formed when magma cools down and becomes solid?

4. Metamorphic rocks are formed from existing rocks that have been changed by:

5. In which type of rock are you most likely to find fossils?

Click to Reveal Answers
1. Weathering (The breaking down of rocks by natural elements).
2. Compaction (The weight of layers squashing sediments together).
3. Igneous (Formed from the cooling of molten magma).
4. Huge heat and pressure (The forces that transform existing rock into metamorphic rock).
5. Sedimentary (Formed from layers of sediment that can trap remains of organisms).

 

Summary:

  • The Earth’s rocks change all the time because of different things that happen to them.
  • There are three kinds of rocks, and they can turn into each other over a long time.
  • This is called the rock cycle, and it recycles the rocks on Earth.

 

 

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