Soil Science Envirothon

What is the primary component of soil?

• Water

• Organic matter

• Air

• Minerals

What are the three soil size particles?

• Clay, Silt, Gravel

• Sand, Silt, Clay

• Silt, Gravel, Sand

• Gravel, Sand, Clay

What are the two types of pore spaces generally found in soils?

• Microscopic and Macroscopic

• Air and Water

• Macropores and Micropores

• Large and Small

What is the study of soil formation called?

• Soil Genesis

• Soil Science

• Soil Chemistry

• Soil Ecology

Which factor affects the rate of chemical weathering in soils?

• Plant roots

• Ice

• Wind

• Temperature

What type of deposit is formed when a river empties into a large body of water?

• Lacustrine deposit

• Alluvial fan

• Marine deposit

• Delta

What type of rock is formed from the cooling of molten materials that have been pushed upward from deep within the earth?

• Intrusive igneous rock

• Metamorphic rock

• Extrusive igneous rock

• Sedimentary rock

What is the primary source of soil organic matter?

• Photosynthesis

• Decomposing animals

• Minerals

• Decomposing plants

Which type of soil is commonly found in areas with long steep slopes?

• Colluvial soil

• Eolian soil

• Marine soil

• Alluvial soil

What is the primary factor influencing the thickness of topsoil in different topographic positions?

• Parent materials

• Climate

• Relief

• Biological factors

Tags

NGSS.MS-ESS2-1