Rocks Flashcards
What rocks are used for?
- Jewellery
* Statues
What is magma?
Boiling rock underground
Name the different layers of the earth.
- crust
- mantle
- outer core
- inner core
What can cause rock change?
- temperature change
- wind
- rain
Name the three types of rock
- sedimentary
- metamorphic
- igneous
What is weathering?
The natural process that breaks up rock into smaller pieces.
Name the three types of weathering
- physical weathering
- chemical weathering
- biological weathering
What is physical weathering?
- temperature change
- freeze-thaw
- wind, rain and waves
What is chemical weathering?
Acid rain
What is biological weathering?
Plants growing in cracks of rocks
What is erosion?
The process of movement of loose and weathered pieces of rocks.
How can erosion be caused?
- waves
- flowing water
- wind
What is a sedimentary rock?
A rock built up in layers. Contains fossils.
What is a Igneous rock?
A rock produced by the cooling of hot molten rocks like magma and lava.
What is a metaphoric rock?
A rock with a changed form. Were originally sedimentary or igneous rocks.
