Types of Rocks
What is the name of the three main types of rocks?
Igneous, Sedimentary, Metamorphic
What do we call the process of breaking down rocks into smaller pieces?
Weathering
How are igneous rocks formed?
Hardening and cooling of lava/magma
What is sediment?
small particles of rock, minerals, and organic material that are created through weathering and erosion
Ture or false: Any rock can become metamorphic through heat and pressure
True
Which type of rock is formed from cooled lava?
Igneous Rock
What is the term for moving soil and rocks from one place to another?
Erosion
What does lava turn into when it cools?
Igneous Rock
Why do some sedimentary rocks have layers?
They are formed from different sediments over time.
What types of rock can change into metamorphic rock?
All types of rock
What type of rock is made from tiny pieces of other rocks?
Sedimentary Rock
What is one effect of wind erosion on rocks?
It can smooth out the surfaces of the rocks.
Give an example of an igneous rock.
Basalt, granite, obsidian, etc.
Give an example of a sedimentary rock
Limestone, sandstone, etc.
Give an example of a metamorphic rock
marble, schist, gneiss, quartzite, etc.
What type of rock can change into a different type of rock?
Metamorphic Rock
What happens to rocks during erosion?
They are worn away and carried to new places.
Intrusive rocks have larger crystals, extrusive rocks have smaller or no crystals.
What is deposition?
Happens after erosion, when sediments begin to collet and form layers in a certain area.
How can a rock change into a metamorphic rock?
Through heat and pressure
True or False: the rock cycle happens very quickly
False
Name one thing that can cause weathering
Wind, water, temperature, or chemicals
What is the difference between intrusive and extrusive igneous rocks?
Intrusive forms inside the Earth, while extrusive forms on the surface.
Explain how sedimentary rocks form
Weathering, erosion, deposition, compaction/cementation
What is the difference between foliated and non-foliated metamorphic rock?
Foliated rocks have layers or bands, nonfoliated rocks do not.