Definitions
Experiment
Layers of the Earth
Layers of soil
Misc Soil
100
Mechanical Weathering
What is wearing away of soil by wind or water
100
Question
What is what you are trying to figure out
100
solid layer crushed by other layers
What is inner core
100
contains the most humus
What is topsoil
100
most valuable resource
What is fertile soil
200
Biological Weathering
What is wearing away of soil by living things
200
materials
What is what you need to do the experiment
200
thin layer of solid rock
What is crust
200
large pieces of rock and clay
What is subsoil
200
the colour of soil which has the most humus
What is Black (or dark brown)
300
Crop Rotation
What is planting a different crop each year in the same field
300
hypothesis
What is your educated guess what you think will happen during the experiment
300
Liquid layer made mostly of nickel and iron
What is outer core
300
layer of solid rock
What is bedrock
300
Soil is made up of this.
What is 50% solid material, 25%water and 25% air
400
zero tillage
What is leaving the field unploughed
400
procedure
What is step by step what you will do during the experiment
400
1000-4000 degrees
What is mantle
400
layer of broken branches and trees
What is litter
400
describe silt
What is made of medium size particles and holds water better than clay or sand
500
Erosion
What is the wearing away of soil by wind water and living things
500
Observation
What is what you actually see happening during the experiment
500
all of the layers of the earth
What is crust mantle inner core outer core
500
This is why the litter is so important
What is keeps the soil from drying out
500
layers of the soil are called
What is horizons
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