Weathering
The breaking down of rock into smaller pieces called sediments.
Break it!
What is Weathering?
The carrying away of weathered pieces of rocks, or sediments, by wind, moving water, gravity, or ice.
Take it!
What is Erosion?
The laying down of weathered pieces of rock, or sediments, in a new location.
Drop it!
What is Deposition?
The three kinds of mineral material found in soil.
What are Sand, Silt, and Clay?
Resources on Earth are _________, which is why conservation, or the careful management and usage of Earth's resources, is important.
What is Limited?
The type of weathering responsible for cracks in a sidewalk caused by growing weeds.
What is Mechanical/Physical Weathering?
The four agents, or causes, or erosion.
What are Wind, Water, Gravity, and Ice?
The natural movement of ocean water that causes the deposition of sand along shorelines and the formation of beaches.
What are Waves/Currents?
This layer of soil contains mostly rock and the least amount of organic matter (none).
This was represented by a solid Oreo in our Soil Cups.
What is Horizon R/Bedrock?
This type of renewable energy source harnesses the power of the sun to generate electricity and reduce dependence on fossil fuels.
What is Solar Energy?
The type of weathering caused by acid rain.
What is Chemical Weathering?
When gravity causes the rapid movement of sediments, rocks, and/or other debris down a slope.
What is a Landslide?
Where a river meets a body of water, such as an ocean or lake, and the water slows down and deposits sediments. This feature gets its name from its triangular shape Δ .
What is a River Delta?
This layer of soil contains the highest concentration of organic material and nutrients. When farmers at Providence Canyon plowed the land, they stripped this layer away, leaving it vulnerable to erosion.
Darker pudding in our Soil Cups.
What is Topsoil?
Energy sources like wind, solar, and hydroelectric power are examples of this type of energy because they can be replenished naturally in a human lifetime.
What are Renewable Energy Sources?
The specific type of mechanical weathering that formed the Hoodoos of Bryce Canyon.
What is Ice Wedging/Frost Wedging?
This agent of erosion is active on Earth, but not on Mars.
What is Water?
These islands are formed by the deposition of sand and other materials along coastlines. Jekyll Island is one of many of these along the Georgia coastline.
What are Barrier Islands?
The layer of soil beneath the topsoil, consisting of mostly minerals and little organic material.
Lighter pudding in our Soil Cups.
What is Subsoil?
What are three fuels that require burning to release energy and also create air pollution? As a group, they are referred to as "fossil fuels."
What are Coal, Oil, and Natural Gas?
The process where minerals in rock, especially iron, react with oxygen in the air or water to form rust, which chemically weathers the rock.
Hint: This is the science-y word for "rusting."
What is Oxidation?
Would packing sediments tightly together increase or decrease their vulnerability to water and wind erosion?
What is Decrease?
A type of landform created by the deposition of sand by wind in dry areas. These are very common on beaches and in deserts, and are often under federal protection.
What are Sand Dunes?
In our soil shake lab, Soil A, our sandy/pebbley soil, ______ (sank/floated) after 5 minutes due to its ____ (high/low) density, and Soil B, rich in organic material, __________ (sank/floated) after 5 minutes due to its _____ (high/low) density.
What is Sank/High and Floated/Low?
What are 2 sustainable farming practices that you used in your Farm Project to conserve soil on your farm and keep it healthy?
What is Crop Rotation/Reforestation/Contour farming/Strip tillage?