Weathering
Weathering is processes that work to what?
break down rocks
Sediment is smaller loose pieces of rock called what?
sand silt and clay
How many types of rock are in the rock cycle?
igneous, sedimentary and metamorphic
Erosion is the process of wearing away surface materials and doing what to it?
moving it somewhere else.
How is igneous rock formed?
from the cooling and hardening of magma
What are the two types of weathering?
chemical and mechanical
Soil can take how long to form?
thousands of years
What types of rocks can become magma? Through what process?
all of them through melting
Where is erosion more common? What kind of land?
steep slopes
How is sedimentary rock formed?
from the compaction and cementation of sediment
What is mechanical weathering?
physical process that breaks up rock into smaller pieces
What is soil?
a mixture of sediment, organic material, minerals, water and air.
what processes must a metamorphic rock go through to become an igneous rock?
melting and cooling
erosion occurs what water does what?
flows along earth's surface
How is metamorphic rock formed?
when minerals in existing rock are changed by heat and pressure
What is chemical weathering?
chemical reactions which dissolve minerals in the rocks breaking them down
Does soil differ based on location?
yes
all rocks can be weathered and become what?
sediments
Erosion also occurs when what picks up the sediments and transports them somewhere else? (not water)
wind
What is crystallization?
magma cooling at different speeds.
Give an example of mechanical weathering. Give an example of chemical weathering.
plant roots, animal burrowing or ice wedging. What is Carbonic Acid or Oxidation.
Due to weathering, different layers of soil form. These layers are known as what? These layers make up what?
horizons and soil profile.
If igneous rock goes under the process of heat and pressure, what does it become? Can it get back to igneous rock in one step?
metamorphic rock, and no.
Cracks in Rock expands when the pressure of ice and water
Frost wedging
What is metamorphism?
when rock is exposed to extreme heat and pressure under earth's surface but does no melt.