Rock Categorizing
If a rock has air bubbles in it, what kind of rock is it?
Igneous
How is igneous rock formed?
Hardened lava.
What can all rocks turn into through weathering and erosion?
Sediment
What is tensional stress?
Tensional stress is the stress that pulls two rocks apart.
What is physical weathering?
wind, water, rain, or a rock getting wet and then dried over and over.
What type of rock is obsidian?
Igneous
Which type of rock is made from layers of sediment that are compacted and cemented together?
Sedimentary rock.
What other things can sedimentary rocks turn into?
Sediment, magma, or any of the other types of rocks
What is compressional stress?
Stress that pushes two rocks together.
List the three main types of weathering
Physical, chemical, and biological
What type of rock is marble?
Metamorphic
How is metamorphic rock formed?
Existing rock changed by heat and/or pressure.
How is igneous rock transformed into metamorphic rock?
The application of heat and pressure.
When does shear stress occur?
This occurs between two rocks when one is being pushed in one direction and the other is being pulled in the opposite direction.
How does biological weathering occur?
When living organisms break rocks.
When a rock has fossils in it, what kind of rock is it?
Sedimentary
What is the difference between rocks and minerals?
Minerals make up rocks. Minerals are the purest form found in nature.
What happens when metamorphic rock melts and then cools?
It becomes magma and then becomes igneous rock.
Techtronic plate movement is an example of what kind of stress?
Shear Stress
What is chemical weathering?
What kind of rock might have ribbon like layers? Example, gneiss
metamorphic
What is the hardest rock type?
metamorphic since it's formed through heat and pressure.
What is compaction or compression?
Layers of sediment become pressed together over time.
The force of gravity will most likely cause what type of stress?
Tensional
What type of weathering is not a type of stress?
Chemical Weathering