Sedimentary Process

Question 1

The disintegration and decomposition of rock on ir near the earth’s surface

Answer 1

Weathering

Question 2

Two Types of Weathering

Answer 2

1. Mechanical

2. Chemical

Question 3

Physical disintegration of rock resulting in smaller fragments

Answer 3

Mechanical Weathering

Question 4

Decomposition of rock involving a chemical transformation into one or more new compounds

Answer 4

Chemica Weathering

Question 5

Agents of Mechanical Weathering

Answer 5

1. Frost Wedging
2. Unloading
3. Thermal Expansion
4. Organi Activity

Question 6

Exfoliation
–texture
exhibited by
rocks that
have peeled off in sheets
during
weathering.

Answer 6

Unloading

Question 7

Expansion and contraction from the

daily cycle of temperature change (day and night)

Answer 7

Thermal Expansion

Question 8

Breakdown due to the growth of organic materials

Answer 8

Organic Activity

Question 9

Types of Chemical Weathering

Answer 9

1. Solution
2. Oxidation
3. Hydrolysis

Question 10

O2 combines with iron to form rust

Answer 10

Oxidation

Question 11

Alteration of a mineral through a chemical reaction with acidic water

Answer 11

Hydrolysis

Question 12

Soil Structure

Answer 12

1. O-Horizon
2. A-Horizon
3. B-Horizon
4. C-Horizon
5. R-Horizon

Question 13

Leaf litter; organic material

Answer 13

O-horizon

Question 14

Plough zone; rich in organic material

Answer 14

A-Horizon

Question 15

Zone of accumulation

Answer 15

B-horizon

Question 16

Weathering soil; little organic material or life

Answer 16

C-horizon

Question 17

Unweathered parent material

Answer 17

R-horizon