6 Grade Science Unit 2 List 1

Front 1

Atmosphere

Back 1

The envelope of gases surrounding the earth or another planet

Front 2

Biospere

Back 2

The regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.

Front 3

Cementation

Back 3

The process in which sediments are glued together by minerals that are deposited by water.

Front 4

Chemical weathering

Back 4

The erosion or disintegration of rocks caused chemical reactions rather than by mechanical processes that results in the formation of a new type of rock.

Front 5

Climate

Back 5

The average pattern of weather that occurs in a certain location over many years.

Front 6

Coastlines

Back 6

The outline of a coast, especially with regard to its shape and appearance.

Front 7

Compaction

Back 7

The process in which sediment is squeezed together, and in which the size of the space between sediment grains is reduced by the weight and pressure of overlying layers.the

Front 8

Composition

Back 8

The elements, molecules, or compounds (substances) that make up a sample of matter.

Front 9

Condensation

Back 9

The process by which water is changed from a gas (water vapor) to a liquid; a stage of the water cycle

Front 10

Cryosphere

Back 10

Portion of the Earth system composed of ice (frozen water)

Front 11

Decomposition

Back 11

The breakdown of rock into more stable forms.

Front 12

Deltas

Back 12

An area of low, flat land shaped like a triangle, where a river deposits eroded sediment to form new land.

Front 13

Deposition

Back 13

The geological process in which sediments, soil, and rocks are laid down on (added to) a landform or land mass.

Front 14

Dunes

Back 14

A hill of loose sand built by aeolian processes( wind) or the flow of water

Front 15

Erosion

Back 15

The process by which rock, soil, and other weathered earth materials are moved from one place to another.

Front 16

Evaporation

Back 16

The process by which water is changed from aliquid to a gas (water vapor); a stage of thewater cycle

Front 17

Geosphere

Back 17

The solid Earth consisting of the lithosphere(crust and upper mantle).

Front 18

Glaciers

Back 18

A huge mass of ice that moves slowly over land.

Front 19

Groundwater

Back 19

Water found in the cracks and spaces in soil, sand, and rock that is stored in and moves slowly through geologic formations of soil, sand and rocks called aquifers.

Front 20

Hydrosphere

Back 20

The Earth's water, including surface water (oceans, lakes, and rivers), groundwater (aquifers), snow cover, ice, and water in the atmosphere, including water vapor

Front 21

Lakes

Back 21

A large area of water surrounded by land.

Front 22

Mechanical Weathering

Back 22

Processes that cause physical disintegration (breakdown) of exposed rock without any change in the chemical composition of the rock.

Front 23

Mineral

Back 23

A naturally occurring, inorganic, solid, crystalline substance which has a fixed structure and chemical composition.

Front 24

Mountains

Back 24

A landform that is formed by tectonic platemovement and rises at least 1,000 feet abovesea level.

Front 25

Organic matter

Back 25

Decomposed matter found as a smallcomponent of soil.

Front 26

Oxidation (geologic definition)

Back 26

The chemical process of adding oxygen to theminerals found in a rock forming new types ofrock.

Front 27

Precipitation

Back 27

A form of water (e.g., hail, rain, sleet, snow)that condenses in the atmosphere and falls toEarth’s surface

Front 28

Rivers

Back 28

A natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, gulf, lake, aquifer, or other water reservoir.

Front 29

Rock

Back 29

A natural substance that is a solid aggregate of one or more minerals or mineraloids

Front 30

Rock Cycle

Back 30

The process of creating, changing,decomposing, and reforming different types ofrock.

Front 31

Sediment

Back 31

Solid material that is moved and deposited in a new location.

Front 32

Sedimentation

Back 32

The process of deposition of solid material in a new location.

Front 33

Soil

Back 33

The loose top layer of Earth’s surface made ofweathered rock and organic matter.

Front 34

Texture

Back 34

A physical property of a solid used to describeits surface.

Front 35

Topography

Back 35

The study of the shape and features of the surface of the Earth (landforms) and other observable astronomical objects (planets, meteors, asteroids, comets, etc.).

Front 36

Transpiration

Back 36

The process of releasing water vapor from the leaves of plants into the atmosphere through the stomata.

Front 37

Uplift

Back 37

The process by which the Earth’s surfaceslowly rises either due to increasing upwardforce applied from below or decreasingdownward force from above.

Front 38

Water Cycle

( hydrologic cycle)

Back 38

The process of water passing into theatmosphere as water vapor, precipitating to theEarth in liquid or solid form, and returning tothe atmosphere through evaporation.

Front 39

Weather

Back 39

The state of the atmosphere at any givenmoment.

Front 40

Weathering

Back 40

The process by which rocks are broken down.