Weather Unit

Front 1

the chemical and physical processes that break down rock at Earth's surface

Back 1

weather

Front 2

the process by which water, ice, wind, or gravity moves fragments of rock and soil

Back 2

erosion

Front 3

the type of weathering in which rock is physically broken into smaller pieces

Back 3

mechanical weathering

Front 4

the grinding away of rock by other rock particles carried in water, ice, or wind

Back 4

abrasion

Front 5

process that splits rock when water seeps into cracks, then freezes and expands

Back 5

ice wedging

Front 6

the process that breaks down rock through chemical changes

Back 6

chemical weathering

Front 7

characteristic of materials such as sand and gravel that allow water to pass easily through them

Back 7

permeable

Front 8

the loose, weathered material on Earth's surface in which plants can grow

Back 8

soil

Front 9

rich, fertile soil that is made up of about equal parts of clay, sand, and silt

Back 9

loam

Front 10

dark-colored organic material in soil

Back 10

humus

Front 11

a layer of soil that differs in color and texture from the layers above or below it

Back 11

soil horizon

Front 12

mixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil

Back 12

topsoil

Front 13

an organism that breaks down wastes and dead organisms

Back 13

decomposer

Front 14

the solid layer of rock beneath the soil

Back 14

bedrock

Front 15

the layer of soil beneath the topsoil that contains mostly clay and other minerals

Back 15

subsoil

Front 16

types of mechanical weathering

Back 16

- temp

- salt crystal growth

- wetting/drying

- organic activity

- abrasion

- release of pressure

Front 17

types of chemical weathering

Back 17

- dissolution

- oxidation

- hydrolysis

- living organism

Front 18

rate of weathering affected by

Back 18

- parent material

- topography

- time

- living organisms

- climate

Front 19

process that splits rock when water seeps into cracks, then freezes and expands

Back 19

ice wedging

Front 20

the grinding away of rock by other rock particles carried by water, ice, or wind

Back 20

abrasion

Front 21

plants and animals affect

Back 21

organic activity

Front 22

soil is a heterogeneous mixture of 5 different constinuents ?

Back 22

1. air

2. rock

3. decayed material

4. water

5. minerals

Front 23

the principle states that during a chemical reaction, matter is not created or destroyed

Back 23

law of conservation of mass

Front 24

holds municipal solid waste, construction debris, and agricultural/industrial waste

Back 24

sanitary landfill

Front 25

a characteristic of a pure substance that can be observed without changing it to another substance

Back 25

physical property

Front 26

when two or more elements or compounds combine to make a more complex substance

Back 26

synthesis

Front 27

reaction occurs when compounds break down into simpler products

Back 27

decomposition

Front 28

the energy released as the products form is greater than the energy required to break the bonds of the reactants; releases heat

Back 28

exothermic

Front 29

more energy is required to break the bonds of the reactants than is released by the formation of the products: energy can be absorbed by nearby matter

Back 29

endothermic

Front 30

a characteristic of a substance that describes its ability to change into different substances

Back 30

chemical properties

Front 31

when one element replaces another element in a compound, or if two elements in different compounds trade places

Back 31

replacement

Front 32

one element replaces another

Back 32

single replacement

Front 33

elements in a compound appear to trade places with the elements in another compound

Back 33

double replacement

Front 34

a mixture in which you can see the different parts and they can easily be seperated out

Back 34

heterogeneous mixture

Front 35

farming

Back 35

agricluture

Front 36

soil conservation method in which the dead stalks are left in the ground to hold the soil in place

Back 36

conservation plowing

Front 37

the management of soil to prevent its destruction

Back 37

soil conservation

Front 38

plowing fields along the curves of a slope to prevent soil loss

Back 38

contour plowing

Front 39

the process or result of oxidizing or being oxidized.

Back 39

oxidation

Front 40

substances you have at the beginning

Back 40

reactants

Front 41

when the reaction is complete, you have new substances

Back 41

products