Soil Formation

Deforestation is  

• Movement of population from rural areas to cities 
• Keeping livestock that eat plants faster than the plants can recover 
• Cutting down and removal of trees 
• Poisoning of lakes, streams, and rivers by eroded soil, pesticide runoff, and acid rain

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

In the Philippines, they practice _________________ on the steep sides of the mountains in order to plant their rice fields. 

• leaching
• terracing
• contour farming
• no-till farming

What is the name of a soil that is:
85% Sand
10% Silt
5% Clay

• Sand
• Silt loam
• Loamy sand
• Sandy loam

Which of the following is the most important soil formation factor

• Time
• Climate
• Slope
• Organisms

Tags

NGSS.MS-ESS2-6

The four types of soil are _____. 

• humus, gravel, pebbles, sand
• sand, silt, clay, loam
• sand, rock, pebbles, granite
• sand, clay, bedrock, topsoil

When  a farmer plows his field along the curves of a slope, it is called 

• sod plowing
• contour plowing
• no-till plowing
• terrace plowing

Organic material formed in soil from decayed remains of plants and animals

• residual soil
• parent rock
• bedrock
• humus

Process of land becoming a desert 

• erosion
• habitat
• soil conservation
• desertification

Tags

NGSS.MS-ESS2-4

Which layer of soil (Layer R) is on the bottom?

• topsoil

• subsoil

• bedrock

• Weathered soil

The layer of soil (Layer A) that is underneath the organic material horizon is called ________________.

• topsoil

• subsoil

• bedrock

• Weathered rock