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DOUBLEDAPOINTS: Name 3 ways rocks can weather CHEMICALLY
Water, Acid Precipitation in rain, snow, sleet, sulfuric and nitric acids, acid groundwater, acids inliving things (lichens) and air (oxidation)
DOUBLEDAPOINTS: Name 3 ways rocks can weather MECHANICALLY.
Ice, frost action, ice wedging, frost heaves, Abrasion, (Wind, Water, Gravity) Exfoli, plants, animalsation
What type of rock weathering forms RUST?
Oxidation!
What are the series of LAYERS in a cross section of soil called?
Horizons
What is the difference between parent and bedrock???
Parent rock is the rock soil actually comes from and bedrock is the rock directly beneath a layer of soil.
What is the term for when soft rocks wear away fastesr leaving harder rocks behind?
Differential Weathering.
Describe CROP ROTATION and why farmers use it....
They plant different crops because they will use different njutrients from the soil.
How do you describe 'No-Till' farming?
The practice of leaving old stalks on the soil so the rain doesn't wash it away.
When talking about soil, if you consider the particle sizes and 'feel' of it, you are talking about the soil's ________.
Texture
What word best describes soil's ability to hold onto nurtients and grow plants? a) soil texture b) ventifactual c) karst d) soil fertility
D
When you break rock down physically, which describes it best? a) acid precipitation b) oxidation c) mechanical weathering d) chemical weathering
C- mechanical (or physical) weathering
What is the difference between HUMUS and HuMMus?
Humus is decomposed parts of soil- HUMMUS is a tasty dip.
What is it called when farmers make little steps in their fields- a series of smaller, flatter fields instead of a hill?
terracing
When farmers plow across the slope of a hill it's called...
contour plowing
Define Differential Weathering=
Softer rock wears away leaving harder rock behind.
what farming technique moves crops around so they aren't in the same place?
Crop rotation
What is the smallest or finest particle of soil?
clay
What is the largest particle type in soil?
sand
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