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Question 1

The earth’s surface is composed of water and landmasses. The solid portion is made out of rocks and minerals that could experience changes either physically or chemically. The weathered materials are transported by different agents from one place to another and will settle down in a particular area. These progressions that happen are achieved by forms called exogenic processes. It includes weathering, erosion, and deposition.

Answer 1

Exogenic Processes

Question 2

is the breakdown of rocks into pieces without any change in its composition. In this process, the size and shape of rocks changes and this occurs because of the following factors

Answer 2

Mechanical Weathering

Question 3

due to tectonic forces, granite may rise to form mountain range. After the granite ascends and cools, the overlying rocks and sediments may erode. At the point when the pressure diminishes, the rock expands, cools, and became brittle and fractured.

Answer 3

pressure

Question 4

rocks expand and are fractured when expose to high temperature. However, if the temperature drops to 0°C (freezing point of water), it also expands and causes fracture.
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Answer 4

Temperature

Question 5

Generally, rocks have fracture in its surface and when water accumulates in the crack and at that point freezes, the ice expands and breaks the rock apart.

Answer 5

Frost Wedging

Question 6

The breakdown of rocks is caused by impact and friction. 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 6

Abrasion

Question 7

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

Answer 7

Organic Activity

Question 8

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

Answer 8

Human Activities

Question 9

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

Answer 9

Burrowing Animals

Question 10

In xxx, there are changes in the composition of rocks due to the chemical reactions

Answer 10

CHEMICAL WEATHERING

Question 11

It occurs in specific minerals which are dissolved in water. Examples of these minerals are Halite (NaCI) and Calcite (CaCO3). The formation of stalactites and stalagmites in caves are brought about by this chemical reaction.

Answer 11

Dissolution

Question 12

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

Answer 12

Hydrolysis

Question 13

It is the response of oxygen with minerals. If the iron oxidizes, the mineral in rocks decomposes.
Rusting is an example of this chemical reaction.

Answer 13

Oxidation

Question 14

IMPORTANCE OF WEATHERING

Answer 14

Weathering is an important process in the formation of soil. Soil is a mixture of grains, organic matter, H20, and gas.

Question 15

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. Plants, animals, and humans play an important role in the erosional process.

Answer 15

EROISION

Question 16

is the laying down of sediment carried by wind, flowing water, the sea or ice. Sediment can be transported as pebbles, sand and mud, or as salts dissolved in water.
Salts may later be deposited by organic activity (e.g. as sea shells) or

Answer 16

DEPOSITION

Question 17

water picks up and moves particles of soil and rock. When the water slows down, for example by reaching flatter land, it starts to drop the particles it is holding. It drops the largest particles first and the smaller ones as it slows down even further.

Answer 17

WIND

Question 18

in coastal environments, sediments are deposited along or near a coastline by low-energy waves that can no longer support their sediment load. Material carried by the sea is washed up by the water and begins to build up along the coastline, creating beaches and other coastal features such as spits and shoals.

Answer 18

SEA

Question 19

Glaciers are not static objects; they move, albeit very slowly, flowing under their own weight, and they grow and shrink depending on the climatic conditions. As they move, they carve the landscape below them, picking up sediments and rocks of all sizes.

Answer 19

ICE

Question 20

Exegonic process

Answer 20

The weathered materials place to another abd will settle down happeb are achieved by forms called exegonic process

Question 21

exegonic process includes

Answer 21

weathering erosion deposition

Question 22

Mechanical weathering

Answer 22

also known as physical weathering breaks down of rocks into pieces without any change in its composition it changes the size and shape of the rocks

Question 23

Mechanical weathering occurs because of the following

Answer 23

Pressure temperature frost wedging abration organic activity human activities burrowing animals