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Unit 3 Study Guide: Rocks, Minerals, and Soil Part 2

Terms in this set (52)

Clay
__________ has the smallest particles.
Clay
__________ is not good for planting.
Clay
__________ holds water very well.
Clay
__________ is sticky when wet and smooth when dry.
Silt
__________ has medium particles.
Silt
__________ holds water just a little bit.
Silt
__________ feels soft and smooth when dry and slippery when wet.
Sand
__________ has large particles.
Sand
__________ does not hold water well.
Sand
__________ is not good for growing plants.
Sand
__________ feels rough and gritty.
Loam
__________ is a mixture of sand, silt, and clay.
Loam
__________ holds water well and is ideal for growing plants.
Loam
__________ feels rough but not gritty.
Clay loam
__________ and __________ hold water well.
Clay
__________ holds water the best.
particles
Clay has the smallest __________.
sticky smooth
Clay is __________ when wet and __________ when dry.
smallest
Clay has the __________ particles.
medium
Silt has __________ particles.
large
Sand has __________ particles.
sand silt clay
Loam is a mixture of __________ , __________ , and __________ .
soft smooth slippery
Silt feels __________ and __________ when dry and __________ when wet.
rough gritty
Sand feels __________ and __________ .
Topsoil
__________ is the layer at the top.
Topsoil
__________ has humus and is very fertile.
topsoil
Many plants grow well in __________ .
Humus
__________ is a rich mixture of the decomposed or broken down remains of plants and animals.
plants animals
Humus is a rich mixture of the decomposed or broken down remains of __________ and __________ .
Subsoil
__________ is the middle layer and does not have humus, but it does have small pieces of rock.
Bedrock
__________ is the bottom layer.
Bedrock
___________ is made of solid rock.
solid rock
Bedrock is made of __________ __________ .
Bedrock
__________ can break down to become soil.
soil
Bedrock can break down to become __________ .
Bedrock is weathered.
What is the first step in forming soil?
Big pieces of rock get smaller and smaller.
What is the second step in forming soil?
The small pieces of rock mix with air, water, and humus to form soil.
What is the third step in forming soil?
Bedrock is weathered. Big pieces of rock get smaller and smaller. The small pieces of rock mix with air, water, and humus to form soil.
How is soil formed?
Composting
__________ is using biodegradable items such as fruit and vegetables, newspaper, and dead leaves to create humus.
fruit vegetables newspaper dead leaves
Composting is using biodegradable items such as __________ and __________ , __________ and __________ __________ to create humus.
Weathering and erosion are two processes that change the shape of the Earth's surface.
How does water and wind change rocks and soil over time?
Weathering
__________ is the breaking down of rocks into smaller pieces.
Weathering
__________ creates landforms such as the Grand Canyon.
Erosion
__________ is the movement of weathered rock and soil.
Erosion
_________ can create deltas.
Erosion
Water, wind, or glaciers carrying small rocks and soil to new places is an example of __________ .
breaking down
Weathering is the __________ __________ of rocks into smaller pieces.
movement
Erosion is the __________ of weathered rock and soil.
Weathering erosion
__________ and __________ are two processes that change the shape of the Earth's surface.
Lucy
__________ is the prettiest girl in the whole universe.
universe
Lucy is a prettiest girl in the whole __________ .
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