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Vocabulary
Physical Weathering
Chemical Weathering
Materials in Soil
More Vocabulary
100
These people are scientists that study the earth.
What are geologists?
100
Explain how trees play a part in physical weathering.
Tree roots grow and break rocks.
100
Name a rock that is more affected than others by chemical weathering.
What is marble or limestone?
100
This material provides nutrients to soil as well as helps it retain water.
What is humus?
100
When dead plants and animals break down into small pieces.
What is decay?
200
The rubbing, grinding and bumping of rocks that cause physical weathering.
What is abrasion?
200
Explain how the role sand plays in physical weathering.
Abrasion (answers will vary). Wind can blow sand against rocks, this sandblasting weathers the rock.
200
What gas dissolves in the air in water droplets to cause chemical weathering?
What is carbon dioxide?
200
This rock particle is the largest to be found in soil.
What are pebbles?
200
DAILY DOUBLE!!! Any non-living natural resource that makes up Earth, including soil and water
What are earth materials?
300
The process by which larger rocks crack and break apart over time to form smaller rocks.
What is weathering?
300
Define physical weathering.
What is the process by which rocks break down by breaking and banging.
300
True or false: Salt can cause chemical weathering.
True.
300
This material is almost invisible to the bare eye.
What is clay?
300
A mix of humus, sand, silt, clay, gravel and/or pebbles.
What is soil?
400
Bits of dead plant and animal parts in the soil.
What is humus?
400
True or False - Rain water reacting with minerals in rocks is an example of physical weathering.
False
400
Name two every day objects in town that may get chemically weathered being outside.
What are monuments, gravestones, buildings, etc.
400
These four things are found in soil.
What are rock particles, organic matter, water and air?
400
Rocks do this when the temperature is hot.
What is expand?
500
DAILY DOUBLE!!!!! Rocks that are smaller than sand, but bigger than clay.
What is silt?
500
True or False: Rain water getting into a crack in a rock and freezing is an example of physical weathering.
True
500
True or false: The frozen Snapple bottle experiment was an example of chemical weathering.
False.
500
Explain how the size of particles in the soil determine how much water the soil can hold.
What is soil with larger particles hold less water, soil with smaller particles hold more water.
500
Animals can make a crack bigger as they do this in the dirt around a rock.
What is burrow?