science

Which process refers to the formation of soil?

1 erosion
2 deposition
3 weathering
4 deforestation

A rock was broken down into rock fragments but its composition was not changes. What process caused this?

1 erosion
2 reaction to acids
3 chemical weathering
4 mechanical weathering

Chemical weathering may be caused by _____________.

1 wind
2 gravity
3 animals
4 acid rain

Which of the following helps prevent erosion?

1 gravity
2 oxidation
3 running water
4 planting trees

Water and wind carry away soil from the surface of a mountain. This is an example of

1 erosion
2 oxidation
weathering
frost wedging
The growth of the plant roots and animal activity may result in ________________.

erosion
abrasion
chemical weathering
mechanical weathering

On a rainy night, a flash flood and landslide occurred which affected a town in Leyte.

What could have been the cause of this landslide?

Soil has become saturated with water.
There were too many trees in the area.
There were mountains where soil came from.
There was deforestation in the area which caused the soil to loosen.

Chemical weathering can result in _______________.

landslides
earthquakes
volcanic eruption
change in rock composition

When plants, animals, and other organisms die, they break down and become part of
the soil. What is this part of the soil called?

silt
clay
sand
humus

Which of the following is an example of chemical weathering?

roots breaking into concrete
acid rain dissolving limestone
wind blowing sand against a rock
water freezing and expanding in cracks

ll of the following are causes of physical weathering except ______.
*
1 point
wind
lichen
plant growth
running water
How does freezing water cause the weathering of rocks? The freezing water _______.
*
1 point
keeps the rocks in place
makes the rocks last longer
causes rocks to fall in landslides
expands, cracks, and breaks rocks

Plants prevent soil erosion by __________.

providing food for animals
the process of photosynthesis
holding dirt and soil particles in place with their roots
releasing water into the atmosphere through transpiration

Rust that forms on metal because of long exposure to oxygen and moisture is what example of chemical weathering?

lichens
acid rain
oxidation
carbon dioxide (carbonic acid)

How does mechanical weathering differ from chemical weathering?

Chemical weathering happens over much shorter time frame than mechanical weathering.
Chemical weathering changes the chemical composition of rocks; mechanical weathering does not.
Chemical weathering occurs only in the mountains; mechanical weathering occurs only on flat land.
Chemical weathering occurs only in tropical climates; mechanical weathering occurs only in cool climates.

Which of the following terms refers to the shaking and trembling that results to the movement of the Earth's crust?

erosion
earthquake
weathering
volcanic eruption
Which of the following processes refers to the transfer of soil from one place to another?

erosion
earthquake
weathering
volcanic eruption

How is weathering of rocks helpful to life on Earth?

What way can people cause erosion? Give an example of situation where people is the agent of erosion.

What way in which people can prevent erosion? Give an example of situation.





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