Vocabulary
The Sequence of processes that change rocks from one type to another over long periods
The Rock Cycle
A solid substance made of one or more minerals
Rock
What is a mineral?
A mineral is a solid substance that occurs naturally in rocks or in the ground.
Weathering is the process of breaking down rocks into sediment, whereas erosion is the process of moving that sediment around.
They work together to help our rocks cycle!
A solid substance that occurs naturally in rocks or in the ground
Mineral
Forms from melted rock that cools and hardens
Igneous Rock
Define the rock cycle.
The rock cycle is a sequence of processes that change rocks from one type to another over long periods.
How does igneous rock form?
Igneous rock forms when magma reaches the surface through volcanos. The lava then cools and hardens to form igneous rock.
DAILY DOUBLE: Forms when heat or pressure change an existing rock
Metamorphic Rock
Forms when layers of sediment are pressed together
Sedimentary Rock
How does magma form?
Magma forms when rocks deep in the Earth become so hot that they melt into magma.
When igneous rock has heat or pressure applied to it, what kind of rock is formed?
When any type of rock has heat or pressure applied to it, metamorphic rock will form!
The breaking down of rocks on Earth’s surface into smaller pieces
Weathering
Free Points!
Free Points!
How does metamorphic rock form?
A metamorphic rock forms when heat or pressure is applied to a rock and it changes into a metamorphic rock.
How is sediment created?
The process of moving sediment from one place to another
Erosion
Melted rock that is present inside the Earth. When it is on the surface it is called lava.
Magma
Describe one type of weathering.
Chemical weathering - changes the chemical makeup of rocks and makes them easier to break down.
Physical weathering - breaks down rocks through physical processes. They are water, wind, ice and living things.
Describe the steps for creating sedimentary rock. (Start from another type of rock!)
Sedimentary rocks are formed when weathering breaks down another rock into sediment. This sediment will collect together into layers. As water carries minerals through the layers, they stick together. Sedimentary rock is formed!