The Rock Cycle Part 1

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

        Coal      erosion      igneous      igneous      Igneous      lava      magma      sandstone      sedimentary      sedimentary      water   

There are 3 types of rocks: sedimentary, metamorphic, and . One type of rock can change into another with the right conditions. Molten rock is called , or when it reaches the Earth's surface. rock forms when molten rock cools and hardens either deep underground or on the Earth's surface. Granite, obsidian, basalt, and pumice are all types of rocks.
Sedimentary rocks form on the Earth's surface, usually from weathering and . During storms, winds and rain can break apart the landscape and wash away the pieces. These particles collect at the bottoms of bodies of forming layers. Over time these sediments can harden and bond together, forming rocks. Limestone, , shale and clay are all rocks. , which consists of the compressed remains of living things, is also considered sedimentary.