This is the dead plant and animal material in soil.
What is humus?
100
How does soil form?
Soil forms by rocks being broken into small pieces by weathering and the pieces of rock mix with dead plant and animal material (humus).
100
What is physical weathering?
Physical weathering is breaking down rocks which include wind, water, sun, ice and temperature changes. Physical weathering does not change the chemical composition of the rock or minerals.
100
Give an example of erosion:
Water carries piece of rock away from a mountain.
200
Three different properties that best describe soil.
What is What are texture, amount of humus, size of rock particles, kinds of earth materials, and ability to retain water?
200
Any nonliving natural resource that makes up Earth, including soil and water.
What is earth material?
200
Pieces of rock being moved by water or wind is an example of: erosion, deposition, or weathering.
What is erosion?
200
Give an example of deposition:
Pieces of rock are carried by a stream and settle further down the mountain.
300
When material settlers after erosion is called what.
What is deposition?
300
Name materials that make up soil:
What is clay, silt, gravel, pebbles, sand, humus, water, air?
300
A crack in a rock fills with water and freezes is an example of: weathering, erosion, deposition.
What is weathering?
300
What was the difference between the two stream tables we used in our investigations?
One stream table was standard and the other was flooded.
400
How are physical and chemical weathering different and the same?
Different: Chemical watering produces new materials, physical does not.
Same: They both break rocks into smaller pieces.
400
Matter that settles to the bottom of a liquid.
What is sediment?
400
What is chemical weathering?
Chemical weathering happens when minerals in rocks are changed by chemicals in water and air. Example: Acid rain. The starting minerals change into new substances.
400
What is the purpose of using a stream table?
We used stream tables to simulate natural landforms. The stream table is a model, a small representation of something larger.
500
Soil is made of these materials:
What are pebbles, sand, gravel, clay, sand, air, and water?
500
Misc: The process in which two or more substances combine to make one or more new substances that have.
What is a chemical reaction?
500
Give an example of weathering:
Wind and water cause small pieces of rock to break off at the side of a mountain.
500
A type of weathering is water. Water does this when it freezes, causing rocks to crack into smaller pieces: