Question 1

What agent causes the rock to break when they bump with each other because of strong current in the seas and rivers?

Accepted Answer

water

Answer

people

Answer

wind

Answer

sun

Question 2

Why do animals considered as agent of weathering?

Accepted Answer

because they help break down the rocks

Answer

because they change in temperature

Answer

because they scrape for protection and produce acid that dissolves some parts of the rock

Answer

because they split rocks due to the roots penetration

Question 3

How is mechanical weathering different from chemical weathering?

Accepted Answer

In mechanical weathering, the physical characteristics of rocks are changed while their chemical composition remains the same

Answer

In mechanical weathering, it involves hydrolysis and oxidation while chemical weathering doesn't involved.

Answer

In mechanical weathering, only the chemical composition is changed.

Answer

none of the above

Question 4

How do winds contribute to the weathering process?

Accepted Answer

It sometimes intensifies the force of the water to break rocks especailly when there is typhoon

Answer

It throws the rock in the backyard of your neighbor.

Answer

It produces electricity that makes the rock blast

Answer

It just simply blows the rock surface.

Question 5

Which statement best describe weathering

Accepted Answer

It is the breaking of rocks into fragments.

Answer

It is the dissolving of rocks in the water

Answer

It is the changing of temperature and weather conditions.

Answer

It is the digging of mountains and rocky places.

Question 6

What type of soil is formed when plants and animals decay?

Accepted Answer

humus

Answer

sandy

Answer

rocky

Answer

clay

Question 7

The following are human activities that contribute to soil erosion EXCEPT:

Accepted Answer

reforestation

Answer

mining

Answer

quarrying

Answer

deforestation

Question 8

How do trees can prevent soil erosion during rainy season?

Accepted Answer

their roots absorb water and hold the soil

Answer

trees make the soil rich

Answer

their leaves and branches absorb water

Answer

trees bear fruits

Question 9

What are the possible effects of soil erosion to plants, animals and people?

Accepted Answer

all of the above

Answer

travelling by land becomes difficult because rocks are destroyed

Answer

the natural habitat of plants and animals are destroyed

Answer

farmers cannot grow more crops because the topsoil is carried by erosion

Question 10

landslide is one of the effects of soil erosion. Which of the following does NOT tell how dangerous landslides can be?

Accepted Answer

it will help in the increase of the harvest in farmlands

Answer

it can damage plants and other agricultural crops

Answer

it can cause destruction to properties and infrastructures.

Answer

it can kill animals and people

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