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Grade 7 Science

Monday, 9 March 2015

Geography Notes for Quiz tomorrow

Chapter 3 – Movement
2015-01-08

Key Terms:
Migration – the movement of people, animals and/or birds from one location to another.
Push factors – factors that make people want to leave an area
Pull factors –factors that make people want to stay or attract people to an area.

Push Factors
Pull Factors
1) Limited space
1) Good shopping         
2) Dictatorship
2) Better living conditions
3) Weather problems
3) Better economy
4) War
4) New jobs
5) High taxes/ cost of living
5) Family  Relationships
6) Natural Disaster
6) Better weather conditions
7) Vacations
7) Major job loss / economy
8) Problem neighbours
9) High crime rate
10) Poisonous animals
8) Education
9) Lots of space
10) Calm and quiet




Modes of Transportation
2015 – 01 -08
Transportation Movements
There are many different ways that people and things can be transported around our globe. The following are the modes of transportation and examples of items that can be transported / moved from one place to another.
1)      2 Wheelers (Bikes, E - Bikes (Scooter) Segway, Motorcycles etc.) – people, packages (mail, parcels, info.), groceries, etc.
2)      4 Wheelers (Cars, ATV, Wheelchairs, etc.) – mail, groceries, animals, luggage, equipment, furniture, supplies, etc.
3)      6 Wheelers – Dually (pick up truck with double tires @ back), bus - people
4)      10 Wheeler (Mack Truck – no trailer) – goods,
5)      18 Wheelers ( Transport Truck) – livestock, cars, gas, milk, fruits & Veg, groceries, mail, raw materials (steel, wood etc), pipes, car parts, etc.
6)      Iron Wheelers (Trains) – people, raw materials (coal , rocks, minerals, wood, etc.), gas, mail, livestock, cars.
7)       Ships – cargo, cars, heavy loads – wheat, iron, garbage, fish, boats,
8)      Planes – raw materials? , people, car parts, military vehicles, etc.
9)      Pipelines – grain mixed with liquid, sewage, water, oil, natural gas, etc.


Patterns of Movement
There are 4 components of any pattern of movement:
1)         Points
2)         Lines
3)         Areas
4)         Volume
                           
For example, your school and where you live are 2 points. The points are connected by a road or a line. Your place is in a neighbourhood or area and the number of students moving along these lines is the volume.

Pattern Descriptions – Sparse or Dense

Types of Patterns – linear (Lines), scattered (everywhere), grid (battleship board), radial (spokes on a wheel)


Chapter 4 – The Environment
2015-02-12
4 Components (Parts) of the Environment

1)    Atmosphere – air
2)    Hydrosphere – water
3)    Lithosphere – the surface of the earth (crust)
4)    Biosphere – plants, and animals, including people

Key Terms:
Ecosystem – is a balanced arrangement of plants and animals and their surrounding physical environment.
Biotic – Living elements in an ecosystem like people, plants and animals
Abiotic – Non-living elements in an ecosystem, like water and rock
Habitat – the place where living things survive
Biomes – a collection of related ecosystems (eg. Tropical Rainforest, veg. regions)
Ecology- the study of ecosystem
Photosynthesis - the process by which plants convert sunlight in to energy for growth

Chapter 5 –  Interaction
2015-01-23
Interaction the way that the 4 themes of geography (place & location, region, movement, and environment), people and the processes of the earth work together or connect with one another.
How the Environment Affects People:
Ø The weather affects many activities that we do.
Ø Climate affects what and where we can grow various crops.
Ø We live in the “Sun Parlour” the area of Canada which has the longest growing season (over 200 days).
Ø Extreme climates – agriculture has to be altered to meet the climate
Ø Permafrost – permanently frozen subsoil (ground). Eg – northern parts of Canada above the frost line.
Ø Shelter – in northern communities, the utilities, water pipes and electrical wires, are run above ground. Some houses are built on “stilts” and are actually above the ground, because the heat from the house will cause the ground to thaw!

Environmental Limits on Human Activity

·        Most people live in regions that have flat plains, gently sloping river valleys, and along coastlines.
·        Mountain Barriers – Rocky mtns. Appalachians, mid-Atlantic ridge, Himalayas, etc.
·        Water Barriers – river deltas, swamps, lagoons, bogs & marshes.
·       Hazardous Building Sites – areas where foundations for housing are difficult to build. Some houses have to be built on stilts. Eg. Amazon river region, & Northern areas of Canada. – Flooding also occurs in Bangladesh as a result of the Monsoon winds bringing heavy rainfall to the area.

Natural Hazards

Volcanoes
Blizzards
Hurricanes
Tornadoes
Earthquakes
Avalanches
Tsunamis
Mudslides
Typhoons
Landslides
Drought
Whirlpools
Forest Fires
Sandstorms
Hail / Ice Storms
Floods


Toxic Hot Spots – is an area where some chemical poison has been dumped in the water and has not yet been cleaned. It could have happened many years ago or could still be going on today. There are many in our region – Detroit, Toledo, Cleveland, Sarnia, Hamilton, Toronto etc.

Chapter 6
Patterns in Natural Systems: Landforms

Plate Tectonics
Plate Tectonics refers to the study of the structure of the earth’s crust, and its’ movements.

·        250 million years ago there existed 1 supercontinent called Pangaea
·        130 million years ago Pangaea began to separate
  • Alfred Wegener was the first to theorize that the plates of the world shifting and termed his theory of "Continental Drift".
***Review all the different landform region in Canada, and know the different names of all the mountain ranges in Canada


***Skim over the textbook on the different types of landform and their characteristics.