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A Changing Earth

Total questions: 25

Worksheet time: 15mins

Name
Class
Date
1.
The following things can cause erosion except for
a)
wind
b)
water
c)
animals
d)
heat
2.
Weathering and erosion can occur at the same time.
a)
True
b)
False
3.

The sand being washed away by the water is an example of:

a)

weathering

b)

deposition

c)

erosion

4.

What is it called when rocks grind against rocks making them smooth and rounded?

a)

Hydraulic Action

b)

Abrasion

c)

Attrition

d)

Solution

5.

Acid rain destroys statues and cemeteries. It's an example of:

a)

chemical weathering

b)

abrasion

c)

erosion

d)

mechanical/physical weathering

6.

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:

a)

mechanical/physical weathering

b)

abrasion

c)

chemical weathering

d)

erosion

7.
What causes dunes to form?
a)
glacial deposits
b)
mountain building
c)
blowing wind
d)
movement along faults
8.

Erosion has created the following land form

a)

Headland

b)

Arch

c)

Bay

d)

Stack

9.

Erosion has created the following land form

a)

Bay

b)

Headland

c)

Stack

d)

Arch

10.

Hydraulic Action describes the process of

a)

When a hard rock grinds a softer rock into sand particles.

b)

The waves hit the small rocks and sediments against the cliff.

c)

Waves strike against the cliff forcing the air inside the small cracks.

d)

Wave energy rubbing rocks against each other.

11.
When rocks are broken down into smaller pieces
a)
erosion
b)
weathering
c)
sediment
12.
When water, ice and wind move particles of rock and soil from one place to another
a)
sediment
b)
weathering
c)
erosion
13.

The plants grows through the small holes in rocks and break the rock is a kind of weathering

a)

Organic

b)

Mechanical

14.
Carbon dioxide in rainwater dissolves limestone
a)
Chemical weathering
b)
Mechanical weathering
15.

What conservation method refers to forming steps in a hill to prevent run off erosion?

a)

ripraps

b)

gabions

c)

terrace farming

d)

runoff barriers

16.

Desertification can be found in...

a)

arid areas

b)

humid areas

c)

cold areas

d)

at the equator

17.

River erosion can be prevented with the help of (Choose more than one option)

a)

Ripraps

b)

Terrace farming

c)

Gabions

18.

Wind carries sand can erode the rock faster as it carries a hard material named:

a)

Quartz

b)

Iron

c)

Lithium.

19.

Which one is NOT a human activity that cause erosion:

a)

Urbanization

b)

Tornado

c)

Agriculture

d)

Deforestation

20.

Wind and water erosion can be prevented through:

a)

A. Spreading moist material(mulch) on land

b)

B. Planting trees and vegetation

c)

Both A & B

21.

Once the land is bare, it is exposed to wind erosion and it can never recover.

a)

True

b)

False

22.

Africa is most vulnerable to desertification due to arid and semi arid climate.

a)

True

b)

False

23.

Planting Eucalyptus can halt desertification.

a)

True

b)

False

24.

Salinity and wind erosion cause land degradation(loss of land fertility)

a)

True

b)

False

25.

Desertification occurs due to poor land management and leads to erosion.

a)

True

b)

False