IB ESS Topic 8

Weathering is a process where

• organic matter is broken down into smaller parts, usually by living organisms

• rock is broken down into soil and small grains

• soluble nutrients and minerals are drained from soil through water action

• soil/rock is moved from one surface to another by wind/water/glaciers

Tags

NGSS.MS-ESS2-2

Leaching is a process where

• organic matter is broken down into smaller parts, usually by living organisms

• rock is broken down into soil and small grains

• soluble nutrients and minerals are drained from soil through water action

• soil/rock is moved from one surface to another by wind/water/glaciers

Erosion is a process where

• organic matter is broken down into smaller parts, usually by living organisms

• rock is broken down into soil and small grains

• soluble nutrients and minerals are drained from soil through water action

• soil/rock is moved from one surface to another by wind/water/glaciers

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

In which horizon is most of the HUMUS?

• Horizon A

• Horizon B

• Horizon C

• Horizon D or R

Which soil has the greatest permeability or quickest flow?

• sand

• silt

• clay

• humus

The main reason we must improve soil quality is to...

• Ensure we can grow more food

• Ensure we can grow more food in a sustainable way

• Ensure that the soil does not disappear

• Ensure that we do not run out of water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-5

What is this a diagram of?

• Artesian screw

• Urban runoff

• Permeable reservoir

• An Aquifer

Tags

NGSS.MS-ESS2-4

When would a groundwater aquifer become unsustainable?

• When more water is extracted than is replenished

• When the zone of replenishment is higher than the extraction point

• When more water is replenished than is extracted

• When the groundwater becomes lower than the well head

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Demand for freshwater is increasing, which if these factors IS NOT causing this increase?

• industrialisation

• fishing technology advancement

• human population increase

• irrigation of agriculture

Tags

NGSS.MS-ESS3-4

Agriculture uses a large amount of water, but which crop uses the most water to produce 1 kg of food?

• wheat

• rice

• beef

• chicken