W&C: Key Words Flashcards Preview

AS/A-Level Geography > W&C: Key Words > Flashcards

Flashcards in W&C: Key Words Deck (126)
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1

Cycle

An example of a continuous system.

2

System

A set of interrelated components working together towards some kind of process.

Helps to explain relationships.

3

4

Model

A way of simplifying or representing complex systems.

5

Elements

The parts or substances that make up a system.

6

Attributes

Characteristics of the elements that may be perceived and measured.

7

Relationships

Associations that occur between elements and attributes.

8

Boundary

The edge of a system.

9

Inputs

Elements entering a system.

10

Stores/components

Elements being stored in a system.

11

Flows/transfers

Elements moving around the system.

12

Outputs

Elements leaving the system.

13

Dynamic equilibrium

There is a balance between both inputs and outputs.

14

Open system

Where there are both inputs and outputs.

Energy and matter can be transferred across boundaries.

15

Closed system.

Where there are no inputs or outputs in a system.

Matter is confined to the system, but energy may enter and exit.

16

Positive feedback

The effects of an action are amplified by other knock on effects.

17

Negative feedback

The effects of a action are nullified by its knock on effects.

18

Isolated system

There are no interactions beyond its boundaries.

19

Cascading system

Made of a chain of open systems where the output from one system forms the input of another.

20

Atmosphere

The layer of gas between the Earth's surface and space, held in place by gravity.

21

Lithosphere

The outermost part of the Earth. 

It includes the crust and the upper parts of the mantle.

22

Hydrosphere.

Includes all the water on Earth.

May be in liquid form, in solid form or in gaseous form.

It may be saline or fresh.

23

Biosphere

Where living things are found.

All the living parts of the Earth.

24

Cryosphere

The parts of system where it is cold enough for water to freeze.

25

Magnitude

The assessment of the size or strength of something.

26

Precipitation

Water falling.

Can be in any form, such as rain, hail, sleet or snow.

27

Evaporation

The process by which liquid water changes into a gas.

This requires energy which is provided by the sun and aided by the wind.

28

Condensation

The process by which water vapour changes to liquid water.

29

Troposphere.

The lowest part of the atmosphere.

Where weather events occur.

30

ICTZ

Inter-Tropical Convergence Zone.