Rocks: Types, Weathering and Erosion

Rocks: Types, Weathering and Erosion

By Divya K

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Types of Rocks - Igneous | Sedimentary Rocks | Metamorphic Rocks

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Earth Science for Kids: Rocks, Rock Cycle, and Formation

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Multiple Choice

I am the main type of rock that is created from hot lava that cools. What type of rock am I?

• Igneous rock

• Sedimentary rock

• Metamorphic rock

Multiple Choice

A rock deep within the Earth experiences extreme temperature and pressure. After a prolonged period of time, it becomes which rock?

• Magma

• Sedimentary rock

• Metamorphic rock

• Igneous rock

Multiple Choice

This rock was formed by smaller pieces of rock that settled at the bottom of a lake millions of years ago. What type of rock is this?

• sedimentary

• Igneous

• Metamorphic

Weathering and Erosion

Weathering is the process of decomposing, breaking up, or changing the colour of rocks. Weathering may be caused by the action of water, air, chemicals, plants, or animals.​Duplicate this text as many times as you would like.

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Once the small pieces of rocks are changed or broken apart by weathering, they may start to be moved by wind, water, or ice. When the smaller rock pieces (now pebbles, sand or soil) are moved by these natural forces, it is called erosion.​

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Multiple Choice

Weathering is the process of -

• Breaking down rocks into sediment

• Dropping or leaving sediment in a location

• Moving sediment from one place to another

Multiple Choice

An example of physical weathering is -

• Plant roots and leaves releasing acid

• Carbonic acid dissolving limestone

• Large temperature changes

• Lichens growing on rocks

Multiple Choice

What is the process of moving sediments from location to another?

• Deposition

• Erosion

• Weathering

• Compaction

Multiple Choice

How do plants in the soil affect how fast erosion happens?

• It doesn't affect erosion.

• It slows down erosion.

• It speeds up erosion.