Show:
Weathering
Soil Composition
Soil Conservation
Volcano Review
Christmas Songs
100
This process physically breaks rocks into smaller pieces.
What is mechanical weathering?
100
This is the organic component of soil.
What is humus?
100
This is the largest cause of topsoil loss.
What is erosion?
100
This is a small, bowl-shaped depression at the top of a volcano.
What is a crater?
100
All I want for Christmas is two of these?
What are my front teeth?
200
These two things affect the rate of chemical weathering.
What are climate and the type of rock?
200
This layer of soil is sometimes called Horizon A.
What is topsoil?
200
This farmland in this part of the great plains was ruined by erosion during the 1930's.
What is the Dust Bowl?
200
This type of volcano is formed by non-explosive eruptions.
What is a shied volcano?
200
Bing Crosby is dreaming of this kind of Christmas.
What is a white Christmas?
300
This is the process by which iron reacts with oxygen in the presence of water.
What is oxidation?
300
This layer of soil is mainly clay with very little humus.
What is subsoil or horizon B?
300
This is the practice of plowing fields along the curves of a slope.
What is contour plowing?
300
This is a place where magma melts its way through the crust in the middle of a tectonic plate.
What is a hot spot?
300
Frosty the Snowman had this for a nose.
What is a button?
400
This is the process by which rock is broken by the repeated thawing and freezing of water.
What is ice wedging?
400
This is a layer of dead plant material that covers the soil.
What is litter?
400
This is the practice of planting different crops in a field each year.
What is crop rotation?
400
This is the smallest type of pyroclastic material.
What is volcanic ash?
400
Oh what fun it is to ride in this kind of sleigh!
What is a one-horse, open sleigh?
500
This is the grinding away of rock by other rock particles.
What is abrasion?
500
This type of soil is best for growing most plants.
What is loam?
500
This is the practice of leaving the stalks of the previous year's crop in the ground to help hold the soil in place.
What is conservation plowing?
500
This term refers to lava's resistance to flowing.
What is viscosity?
500
Elvis Presley is sang about this kind of Christmas.
What is a blue Christmas?