Exogenic processes

Question 1

External processes invlolves?

Answer 1

Mass wasting, erosion, and weathering

Question 2

physical breakdown
(disintegration) and chemical alteration
(decomposition) of rocks at or near the Earth’s
surface.

Answer 2

Weathering

Question 3

physical forces that break
rock into smaller and smaller pieces without
changing the rock’s mineral composition.

Answer 3

Mechanical Weathering

Question 4

Causes of mechanical weathering?

Answer 4

Biological activities, human activities, salt crystal growth, Frost wedging, and expansion resulting from unloading

Question 5

A rock unit buried below a land surface experiences high compressional stresses because of the weight of the overlying rock.

Answer 5

Expansion resulting from unloading

Question 6

Process of splitting igneous rocks into onion like sheets

Answer 6

Exfoliation

Question 7

weakening and subsequent disintegration of rock by plants, animals and microbes.

Answer 7

Biological activities

Question 8

process is physical, the
pressure is exerted by a biological process

Answer 8

Biological activities

Question 9

External Processes are those processes that
occur at or near the Earth’s surfaces and are
powered by the energy from the sun.

Answer 9

Exogenic processes

Question 10

Such as digging, blasting, strip mining and agriculture

Answer 10

human activities

Question 11

basic part of the rock cycle, thus, a key process
in the Earth system.

Answer 11

weathering

Question 12

These fractures divide the rock into a series of layer or sheets

Answer 12

Sheeting

Question 13

High temperatures in desert environments also tend to promote weathering caused by the crystallization of salts in pore fractures

Answer 13

salt crystal growth

Question 14

Disruption of rock fabrics owing to stressed generated by freezing and thawing of water in rock fracture.

Answer 14

Frost wedging

Question 15

chemical transformation of rock into one or more new compounds.

Answer 15

Chemical weathering

Question 16

certain minerals dissolved in water

Answer 16

Dissolution

Question 17

water is being absorbed into the crystal structure causing them to expands

Answer 17

Hydration

Question 18

occurs when water reacts with minerals and breaks them down.

Answer 18

Hydrolysis

Question 19

occurs in plants, fungi and lichens secrete organic acids that dissolve minerals and the nutrients are taken by these organisms

Answer 19

Biological weathering

Question 20

when carbon dioxide interacts chemically with minerals

Answer 20

Carbonation

Question 21

the reaction of oxygen with minerals in the rock that forms oxides

Answer 21

Oxidation

Question 23

control weathering by their physical and chemical reaction to climate.

Answer 23

Rock type

Question 24

speed at which rock or soil is broken down.

Answer 24

Rate of weathering

Question 24

affects the rate of weathering because if you have rough steep slopes, there is more area expose to rain, wind

Answer 24

Topography

Question 25

controls weathering because the rate of chemical reactions doubles with every 10 °C rise.

Answer 25

Climate

Question 26

process by which sediments are moved along from the source to where they are deposited

Answer 26

Transport

Question 27

Very fine dust or slit

Answer 27

Loess

Question 28

the picking up of loose materials from the Earth’s surface.

Answer 28

Deflation

Question 29

sand blasting process that occurs as material is carried along with wind.

Answer 29

Wind abrassion

Question 30

A rock's exposure to the weathering elements and its surface area can affect its rate of weathering.

Answer 30

Surface area

Question 31

Control rate of weathering (4)

Answer 31

Surface area, topography, climate, and rock types

Question 32

the separation and removal of weathered and unweathered rocks and soil from its substrate due to gravity of transporting agents like wind, water, and ice

Answer 32

Erosion

Question 33

occurs commonly in flat, bare areas of dry, sandy and lose soils. It detaches particles and transport them by wind.

Answer 33

Wind erosion

Question 34

Low mound or ridge of sediments

Answer 34

Dunes

Question 35

Sand dunes in Paoay Ilocos Norte are formed through this process?

Answer 35

Dunes

Question 36

The most common erosional agent.

Answer 36

Water

Question 37

Permanent body of ice, consist of recrystallized snow and show evidence of movements through gravity

Answer 37

Glaciers or ice

Question 38

the rolling or dragging of large grains aided by the push of smaller grains.

Answer 38

Traction

Question 39

moving of particles

Answer 39

Suspension

Question 40

movement of soluble materials.

Answer 40

Solution

Question 41

bouncing of sand grains as they are picked up, carried along, and dropped repeatedly.

Answer 41

Saltation

Question 42

Term for sediments by glacial origin

Answer 42

Glacial drift

Question 43

produced when mass wasting and running water combines

Answer 43

Steam valley

Question 44

an event that initiates downslope movement

Answer 44

Trigger

Question 45

downslope movement of rock, regolith, and soil under the direct influence of gravity. It does not require a transporting medium.

Answer 45

Mass wasting

Question 46

controlling force of mass wasting is?

Answer 46

Gravity

Question 47

steepest angle at which a material remains stable

Answer 47

Angle of repose

Question 48

process where water-saturated surface material loses their strength and behave as fluid-like masses that flow

Answer 48

Liquefaction

Question 49

a massive debris flow.

Answer 49

Mudslide

Question 50

Formed or occurring on the surface of the Earth

Answer 50

Exogenic