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Question 1

Process of breakdown of rocks on Earth

Answer 1

weathering

Question 2

Caused by actions involving water, ice, acids, salts, plants, animals, gravity and changing temperatures.

Answer 2

weathering

Question 2

Happens especially in places where there is little soil
and few plants.

Answer 2

physical weathering

Question 2

Caused by the effects of changing temperature, and it
is sometimes assisted by water.

Answer 2

physical weathering

Question 2

Scraping and “wearing away”

Answer 2

abrasion

Question 3

wind is the main culprit

Answer 3

physical weathering

Question 3

Water seeps inside
the rock, freezes,
and then expands.

Answer 3

freeze thaw

Question 4

usually in cold regions

Answer 4

freeze thaw

Question 5

It can happen as
cracks when there
is a loss of pressure
on the rock.

Answer 5

exfoliation

Question 6

onion skin

Answer 6

exfoliaton

Question 7

Caused by rainwater reacting to the mineral grains in
rocks to form new crystals and soluble salts.

Answer 7

chemical weathering

Question 8

Rapidly occurs at higher temperatures, warm and damp environments are best.

Answer 8

chemical weathering

Question 9

Carbon dioxide in the
air dissolves in
rainwater

Answer 9

carbonation

Question 10

This “weak” carbonic
acid can dissolve
limestone by seeping
into the cavities and
cracks of it.

Answer 10

carbonation

Question 11

Polluting gases (sulfur dioxide, nitrogen dioxide)
dissolves in rainwater to produce acid rain.

Answer 11

acidification

Question 12

very corrosive, and attacks many rock
types, seriously damaging buildings and other
structure.

Answer 12

acid rain

Question 13

produces Acidic or Basic water and breaks the bond of other atoms

Answer 13

hydrolysis

Question 14

Water reacts chemically with the rocks, modifying its
chemical structure.

Water attaches itself to the compound.

Answer 14

hydration

Question 15

Breakdown of rocks
by oxygen and
water, often giving
it a rusty-colored
weathered surface.

Answer 15

oxidation

Question 16

Rocks are weakened by biological agents such as
plants and animals.

Answer 16

biological weathering

Question 16

Some plants and animals produce acidic substances that react with rocks and causes its slow disintegration.

Answer 16

by chemical compounds

Question 16

When plant roots grow, it would create fracture and cracks that eventually results to rock
breakage.

Answer 16

biological weathering

Question 16

Burrowing animals such shrews and moles
create holes in the ground by excavation,
thus moving rock fragments to the surface.

Humans also contribute to this.

Answer 16

by physical means