Soils Question Preview (ID: 58021)


Module 8: Soil. TEACHERS: click here for quick copy question ID numbers.

Soil conservation is a?
a) method to maintain soil fertility and thereby protect soil from erosion and nutrient loss.
b) place where soil sings
c) method of hoarding soil
d) method of keeping dirt

what is loam
a) sand+ silt + salt
b) silt+oil+clay
c) sand+ silt + clay
d) lava+clay+water

What makes the best soil mixture
a) humus and carrots
b) loam and water
c) humus and sand
d) loam and humus

What is topsoil
a) the uppermost soil horizon
b) the dirt on top
c) dirt for gardening
d) the middle soil plane

what has a PH around 7
a) alkaline soil
b) neutral soil
c) good soil
d) acidic soil

What is rock weathering
a) leaving your rocks in the rain
b) rocks worn down
c) Breaking of rocks into smaller fragments
d) weather that is rocking

mechanical weathering is
a) a mechanic in the weather
b) caused by a machine breaking rocks into smaller parts
c) the wearing down of a mechanic by the weather
d) caused by plant roots that grow through rocks and break them into smaller parts

What can cause weathering by seeping into cracks in rocks and freezing.
a) Ice
b) snow
c) water
d) icecream

Name four techniques used for maintaining soil fertility and protecting soil from erosion and nutrient loss
a) countour ploughing, retention walls, crop rotation, water reduction
b) contour ploughing, terracing, cover crops, crop rotation
c) terracing, cover crops, crop rotation, irrigation
d) fertilizer, crop rotation, retention walls, irrigation systems

is an especially powerful way to cause chemical weathering
a) rain
b) sea water
c) oil
d) Acid rain

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