Chapter 1 Flashcards

1
Q

Law of conservation of energy

A

The law of conservation of energy states that energy cannot be created or destroyed, it can only be converted to one form to another.

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2
Q

Solar Constant

A

Solar radiation at the top of the Thermosphere (measured in watts per square meter)

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3
Q

System

A

any set of interrelated components or objects which are connected together to form a working unit or unified whole.

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4
Q

Types of System

A

Open

Closed

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5
Q

Open System

A

A system with inputs and outputs that interacts with the surrounding environment

♣ May gain or lose energy

♣ The output is not the same as the input

input -> process -> output

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6
Q

Closed System

A

A system that is shut off from the surrounding environment, so that it is entirely self-contained in terms of energy and materials.

♣ no real difference in output/input

♣ no loss of anything.

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7
Q

Example of an open system

A

Photosynthesis

input: radiation from the sun, water, nutrients, co2
process: conversion of the energy and matter into stored chemical energy (plant sugars for example)
output: oxygen into our atmosphere

Another example:

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8
Q

Equilibrium

A

The system remains balanced over time

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9
Q

Metastable Equilibrium

A

Results from an abrupt change from one state to another

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10
Q

Steady-state Equilibrium

A

System values fluctuate around a steady average and maintains same operation level.

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11
Q

Dynamic Equilibrium

A

System values fluctuate around a stable average, but exhibits a trend overall.The trend can change over time.

“Thresholds/tipping points”
SyStem jumps to anew stable average condition.

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12
Q

Name the spatial themes

A

there are 5 SPATIAL THEMES

  1. Region
  2. Location
  3. Place
  4. Movement
  5. Human-Earth interaction
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13
Q

Lithosphere

A

Earth’s crust and upper mantle

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14
Q

Atmosphere

A

thin gaseous veil surrounding the Earth

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15
Q

Hydrosphere

A

Water on Earth

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16
Q

Biosphere

A

Interconnected web that links organisms with their physical environment (flora, fauna, ecosystems)

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17
Q

Who developed the system of diving the earth by latitude and longitude?

A

Ptolemy

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18
Q

Latitude of the Arctic Circle and Antarctic Circle

A

66.5° - 90° N/S

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19
Q

International Date Line

A

180°

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20
Q

Prime Meridian

A

0° (Greenwich, England)

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21
Q

Threshold

A

a moment in which a system can no longer maintain its character, so it lurches to a new operational level, which may not be compatible with previous conditions.

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22
Q

Gravity

A
  • caused by movement in the Iron-Rich core
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23
Q

Great circle

A

Any circle drawn on the globe with its center coinciding with the center of the globe, bisecting the earth into two equal halves.

The equator is a great circle.

The arc of a great circle can be used to measure the shortest distance between any two points on the surface of the Earth.

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24
Q

One time zone spans how many degrees longitude?

25
Map
A representation, usually on a plane surface, of a region or place on Earth.
26
Scale
A proportion used in determining the dimensional relationship of a representation to that it represents
27
Map Projection
reduction of spherical Earth to a flat surface
28
2-D maps distort one or more
- Distance - Direction - Area - Shape - Proximity
29
Main Types of projections
4 MAIN TYPES - Cylindrical (Mercator) - Planar - Conic - Oval
30
Remote Sensing
The technique of obtaining information from a distance. Acquisition of data about Earth’s surface from a satellite orbiting Earth or from other long distance methods.
31
Active remote sensors
direct a beam of Energy at a surface and analyze the difference in Energy reflected back
32
Passive remote sensors
record energy emitted from a surface (particularly infrared and visible light)
33
Geostationary satellite
- keep pace with the Earth’s orbit 35,400 - | - remaining centred over a single area of the Earth’s surface
34
Orbiting satellite
- orbit around the Earth at differing speeds and orbits
35
Geographical Information Systems (GIS)
a computer system that gathers, stores, and analyzes geographic information, and displays it on demand.
36
Importance of GIS
helps geographers to monitor and calculate whether relationships between objects on a map are significant or merely coincidental
37
Geography
The study of interdependence and relationships among geographic areas, natural systems, processes, society and cultural activities over space.
38
Five themes of geographic education are
Location Place Movement Regions Human-Earth Interactions
39
Earth's 4 spheres
Atmosphere Lithosphere Hydrosphere Biosphere
40
Geography (Leonard tang)
Geography is the study of how, where and why things are organized in space through time.
40
Physical geography
``` Landscape ecology Biogeography Hydrology Geomorphology Meteorology Climatology Glaciologist oceanography Soils ```
41
Earth Systems Concepts
SYSTEMS THEORY SYSTEM FEEDBACK SHSTEM EQUILIBRIUM
42
Example of a positive feedback loop
The Arctic sea ice albedo positive feedback loop.
43
4 criteria of a system
A set of interconnected elements Boundaries exist No randomness Operates within acceptable limits
44
Types of scales
Written Scale Representative Fraction Graphic Scale
45
Written scale example
1 centimetre equals 5 kilometres
46
Representative fraction example
1:250,000 or 1/250,000 (no units)
47
Altering scale affects:
Area covered | Detail shown
48
Latitude
Angular distance north or south of the equator. Parallel to the equator?? ?????
49
Longitude
Angular distance east or west of prime meridian ???
50
Cylindrical Projection
Piece of paper, wrapped around earth, becomes a cylinder - Countries along the equator will be more accurate - Distortion at the poles
51
Cylindrical Projection
Piece of paper, wrapped around earth, becomes a cylinder - Countries along the equator will be more accurate - Distortion at the poles (things appear bigger) Standard line along the equator Mercator projection..
52
Standard Line
Where the point of contact is with the piece of paper in the projection.
53
Planar Projection
Standard 'point' at a pole.
54
Conic Projection
Standard line across the north america.
55
Small Circle
??
56
Solar wind
Clouds of electrically charged particles.
57
Energy from the sun
Electromagnetic | Solar Wind