The rock cycle
I can identify the three main types of rocks, and recognise how they are formed by different processes.
- Year 8
The rock cycle
I can identify the three main types of rocks, and recognise how they are formed by different processes.
Lesson details
Key learning points
- There are three types of rock; igneous, sedimentary and metamorphic.
- Igneous rocks are volcanic rocks and examples include basalt, obsidian and granite.
- Sedimentary rocks are formed from sediments and examples include sandstone, limestone and chalk.
- Metamorphic rocks are formed through heat and pressure and examples include slate, gneiss and marble.
Keywords
Rock - the solid mineral material forming part of the surface of Earth
Process - a process is an ordered series of actions, events or changes that make something happen
Pressure - pressure is a force pushing or pressing on a given area
Erosion - the process of Earth’s surface, e.g. rock or soil, being worn away
Weathering - The process of being worn down due to exposure to the atmosphere.
Common misconception
There is only one type of rock, and rocks can't change.
Students will explore the three main types of rock found on Earth, and understand how rocks are recycled through the rock cycle.