earth science

Question 1

Weathering

Answer 1

The chemical and physical processes that break down rock at Earth’s surface.

Question 2

physical weathering

Answer 2

Any process that breaks rock down into smaller pieces without changing the chemistry of the rock; typically wind and water.

Question 3

frost wedging

Answer 3

The mechanical breakup of rock caused by the expansion of freezing water in cracks and crevices of rock.

Question 4

Unloading

Answer 4

Reduced pressure on igneous rock causes it to expand and allows slabs of outer rock to break off in layers in a process called exfoliation

Question 5

Agent of Weathering

Answer 5

Are factors responsible for weathering, for example; Wind, Water, Gravity

Question 6

chemical weathering

Answer 6

The process in which rock is broken down by changes in its chemical makeup

Question 7

Oxidation

Answer 7

Chemical weathering process that occurs when some minerals are exposed to oxygen and water over time

Question 8

Acid rain

Answer 8

A form of chemical weathering that breaks down rocks by changing their chemical makeup

Question 9

Indicator

Answer 9

A compound that changes color in the presence of an acid or a base

Question 10

carbonic acid

Answer 10

a very weak acid formed in solution when carbon dioxide dissolves in water.

Question 11

Biological weathering

Answer 11

Physical or chemical weathering caused by plants or animals.

Question 12

Erosion

Answer 12

The process by which wind, water, ice, or gravity transports soil and sediment from one location to another

Question 13

Deposition

Answer 13

Process in which sediment is laid down in new locations.

Question 14

Cementing

Answer 14

Process that turns sediment into hard rock when a binding material bonds the clay, pebbles, sand, and rocks.

Question 15

Sediment

Answer 15

small, solid pieces of material that come from rocks or living things