Exogenic Processes (Weathering)

Question 1

A geological event that happens on the surface of the Earth.

Answer 1

Exogenic Process

Question 2

It is a process where rocks, soil and minerals are broken down or worn away over time by natural elements.

Answer 2

Weathering

Question 3

breakdown of rocks into pieces without any change in its composition

Answer 3

Mechanical

Question 4

• due to tectonic forces, granite may rise to form a mountain

Answer 4

Pressure

Question 5

Rocks expand and are fractured when expose to high _________.

Answer 5

Temperature

Question 6

However, if the temperature drops to 0°C, the rocks will ________ and ________.

Answer 6

Expands and causes fractures

Question 7

when water accumulates in the crack and at that point freezes, the ice expands and breaks the rock apart

Answer 7

Frost wedging

Question 8

The breakdown of rocks is caused by impact and friction.

Answer 8

Abrasion

Question 9

This primarily occurs during collision of rocks, sand, and silt due to current or waves along a stream or seashore causing sharp edges and corners to wear off and become rounded.

Answer 9

Abrasion

Question 10

The roots grow causing penetration into the crack, expand, and in the long run, break the rock.

Answer 10

Organic Activity

Question 11

Activities such as digging, quarrying, denuding forests and cultivating land contribute to physical weathering.

Answer 11

Human Activity

Question 12

Animals like rats, rabbits and squirrels excavate into the ground to create a space for habitation.

Answer 12

Burrowing Animals

Question 12

Involves the change
in composition and structure of rocks and minerals through chemical reactions

Answer 12

Chemical

Question 13

It occurs in specific minerals which are dissolved in water.

Answer 13

Dissolution

Question 14

2 examples of these minerals that dissolve in water.

Answer 14

Halite (NaCl) and Calcite (CaCO3)

Question 15

The formation of stalactites and stalagmites in caves are brought about by what chemical reaction?

Answer 15

Dissolution

Question 16

Rock-forming minerals like amphibole, pyroxene, and feldspar react with water and form different kinds of clay minerals.

Answer 16

Hydrolosis

Question 17

What are those 3 minerals that react with water and forming a clay again?

Answer 17

amphibole, pyroxene, and feldspar

Question 18

It is the response of oxygen with minerals.

Answer 18

Oxidation

Question 19

If the _____ oxidizes, the mineral in rocks decomposes.

Answer 19

IRON

Question 20

If the iron oxidizes, the mineral in rocks decomposes. What is this chemical reaction under oxidation?

Answer 20

Rusting

Question 21

________ is the separation and removal of weathered rocks due to different agents like water, wind, and glacier that causes transportation of the material to where they are deposited.

Answer 21

Erosion

Question 22

_________, ________, and ______ play an important role in the erosional process.

Answer 22

Plants, animals, and humans

Question 23

Rocks build up in a single place because of erosion, creating a layer of rocks and minerals.

Answer 23

Deposition