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Podar International School
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## Replicated sedimentary rock **Objective:** How sedimentary rock forms **Materials needed:** - An empty water bottle - Gravel - Topsoil - Dead plant material - Sand - Water **Procedure:** 1. Start by pouring a layer of sand into the empty water bottle, followed by a layer of topsoil. 2. Insert...
## Replicated sedimentary rock **Objective:** How sedimentary rock forms **Materials needed:** - An empty water bottle - Gravel - Topsoil - Dead plant material - Sand - Water **Procedure:** 1. Start by pouring a layer of sand into the empty water bottle, followed by a layer of topsoil. 2. Insert the dead plant material and add a layer of gravel. 3. Fill the bottle about 3/4 full with water and screw on the cap. 4. Shake the bottle until all the contents are thoroughly mixed, then let it sit. 5. Over time, observe and record the results, paying particular attention to how the ingredients settle into different layers at the bottom of the bottle. 6. Focus on the dead plant material and describe what happens to it. 7. Make a hypothesis about what happens when pressure is exerted on the rock over a long period of time. 8. After completing the experiment, compare and contrast the sedimentary rock you created with sedimentary rocks that formed millions of years ago. ## Research Work Sedimentary rocks are of great importance to human beings. With the help of the internet, find out some of the uses of sedimentary rocks. ## Metamorphic rocks The word *metamorphic* is derived from the Greek word *metamorphosis*, which means a change of form. These rocks were once igneous or sedimentary and then underwent changes through physical and chemical processes. The factors responsible for this process are temperature and pressure or both. Since rocks are made up of minerals, they may change their composition and texture under great pressure and temperature.