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WorksheetsA Changing Earth
Total questions: 25
Worksheet time: 15mins
The sand being washed away by the water is an example of:
weathering
deposition
erosion
What is it called when rocks grind against rocks making them smooth and rounded?
Hydraulic Action
Abrasion
Attrition
Solution
Acid rain destroys statues and cemeteries. It's an example of:
chemical weathering
abrasion
erosion
mechanical/physical weathering
Freeze thaw or ice wedging is when water gets into cracks in rocks and then freezes and thaws. This action busts apart rocks. It is:
mechanical/physical weathering
abrasion
chemical weathering
erosion
Erosion has created the following land form
Headland
Arch
Bay
Stack
Erosion has created the following land form
Bay
Headland
Stack
Arch
Hydraulic Action describes the process of
When a hard rock grinds a softer rock into sand particles.
The waves hit the small rocks and sediments against the cliff.
Waves strike against the cliff forcing the air inside the small cracks.
Wave energy rubbing rocks against each other.
The plants grows through the small holes in rocks and break the rock is a kind of weathering
Organic
Mechanical
What conservation method refers to forming steps in a hill to prevent run off erosion?
ripraps
gabions
terrace farming
runoff barriers
Desertification can be found in...
arid areas
humid areas
cold areas
at the equator
River erosion can be prevented with the help of (Choose more than one option)
Ripraps
Terrace farming
Gabions
Wind carries sand can erode the rock faster as it carries a hard material named:
Quartz
Iron
Lithium.
Which one is NOT a human activity that cause erosion:
Urbanization
Tornado
Agriculture
Deforestation
Wind and water erosion can be prevented through:
A. Spreading moist material(mulch) on land
B. Planting trees and vegetation
Both A & B
Once the land is bare, it is exposed to wind erosion and it can never recover.
True
False
Africa is most vulnerable to desertification due to arid and semi arid climate.
True
False
Planting Eucalyptus can halt desertification.
True
False
Salinity and wind erosion cause land degradation(loss of land fertility)
True
False
Desertification occurs due to poor land management and leads to erosion.
True
False
