Unit 2- Physical Geography Flashcards
(82 cards)
1
Q
What are the 4 eras in order?
A
Precambrian, Paleozoic, Mesozoic, and Cenozoic
2
Q
How old is the earth?
A
4.600 000 years ago.
3
Q
Name 1 event that happened in the Precambrian era?
A
4 shields are formed. Canadian, Brazilian, African and Australian
First great extinction
4
Q
Name 1 event that happened in the Paleozoic era?
A
The Appalachians formed
Breakup of one super continent Pangea
5
Q
1 event that happened during the Mesozoic era?
A
Innuitian mountains formed
6
Q
1 event that happened in the Cenozoic era?
A
Ice sheets cover much of North America
Contents take on their present shape
Humans became the most dominant life on earth
7
Q
What is continental drift?
A
It means eventually the continents are drifting from each other.
8
Q
Why didn’t scientist believe Alfred Wegener theory?
A
They thought it was impossible for a whole continent to break up since it was such a big mass. Also because Wegener didn’t have enough evidence to back up his answer.
9
Q
What was Wagners proof?
A
- If you squish all the continents together it will fit just like a puzzle.
- The mountains were the same in eastern USA and east coast Brazil.
- Same rock types in the coast of 2 continents
- Glacier deposits
10
Q
What is the theory of plate tectonics?
A
The theory is that the outer rigid layer of the earth is divided into a couple of dozen plates that move around across the earths surface relative to each other.
11
Q
Give 2 examples of how the movement of plate tectonics shaped Canada?
A
- Mountain ranges
2. We use to be one supercontinent but now we are separated into North America.
12
Q
What is a glacier?
A
A huge mass of ice that moves slowly over land
13
Q
How are glaciers formed?
A
Formed in areas where more snow falls each year than melts.
As snow builds up it changes from light, fluffy crystals to round granules
As granules become buried under additional snow they compress and form firn (grainy ice)
Over time, the weight of continued snow accumulation cause more compaction and recrystallization
Eventually, ice fuses into a massive sheet that moves underneath its own weight.
14
Q
What is an ice age?
A
Glaciers that have existed for billions of years
The most recent ice age was 10 000 years ago.
15
Q
What are the 6 glacial features?
A
Striations Till plains Moraines Drumlins Eskers Lake plains
16
Q
How is igneous rock formed?
A
Formed by melting+cooling eg. Granite
17
Q
How is sedimentary rock formed?
A
Formed by weathering and compaction.
Eg. Limestone
18
Q
How is metaphoric rock formed?
A
Formed by heat + pressure eg. Marble
19
Q
What are the 8 physical regions in Canada?
Know places on map*
A
- Canadian Shield
- Interior plains
- Hudson Bay Lowlands
- Arctic Lowlands
- Great Lakes-St. Lawrence Lowlands
- Western Cordillera
- Appalachian Mountains
- Innuitian Mountains
20
Q
What are the physical characteristics of the Hudson Bay Lowlands?
A
Very flat Marshy Permafrost Forested (southern areas) Muskeg environment Largest wet land in Canada
21
Q
Is it weather or climate?
It was raining outside yesterday.
A
Weather
22
Q
Is it weather or climate?
Wind speed on the lake was perfect for my sailing lessons nearly everyday this week
A
Weather
23
Q
Is it weather or climate?
You need to wear sunscreen everyday on Jamaica’s hot beaches.
A
Climate
24
Q
What is weather?
A
The day-to-day characteristics of the atmosphere.
25
What is climate?
The weather patterns of a region over a long period of time.
26
What are the factors affecting climate?
```
Latitude
Ocean currents
Winds and air masses
Elevation
Relief
Near water
```
27
How does latitude effect climate?
Warmer at equator & colder at police
| More precipitation at low latitudes (where we find rainforests)
28
How does ocean currents affect climate?
The temperature of an ocean current affects the temperature of the air above it
Warm currents being higher temperatures and more precipitation
There are 3 majors ocean currents in Canada
29
How does wind and air masses affect climate?
Carry temperature and moisture from one place to another
Have characteristics of the place over which they were formed
E.g. Air mass formed over the Canadian Arctic is cold & dry, but air mass formed over the Gulf of Mexico is arm & moist
In Canada, the prevailing winds carry weather from west coast to east coast (called westerlies)
30
How does elevation effect climate?
As you get higher, the temperature gets colder and the amount of precipitation increases (think cold, snowy mountain ...)
31
How does near water affect climate?
Areas away from cost (Continental Climate) have low precipitation and large annual temperature range
Areas near coast (maritime climate) have high precipitation and moderate annual temperature range.
32
Is it climate or weather? And which lower N is this statement?
When warm, they help create wet costal climates. When cold, they help create drier coastal climates.
Precipitation
| Ocean currents
33
Is it climate or weather? And which lower N is this statement?
The further from the equator (north or south) the cooler the temperatures.
Temperature
| Latitude
34
Is it climate or weather? And which lower N is this statement?
Precipitation is higher next to oceans. It is lower when areas are located far inland.
Precipitation
| Near water
35
What is a climagraph?
A climagraph shows the average monthly temperature and precipitation values for a given location (or station).
36
What should temperature be on a climagraph?
Line graph (red)
37
What should precipitation be on a climagraph?
Bar graph blue
38
How do you find Average annual temperature?
Add all 12 monthly temperatures together and divide by 12
39
How do you find temperature range?
Temperature of warmest month - temperature of coldest month
40
What is high temperature range?
Continental
41
What is low temperature range?
Maritime
42
How do you find total annual precipitation?
Add all 12 monthly precipitation together
43
Name the climate regions in Canada?
| Know where they are on the map*
```
West Coast
Mountain
Prairie
Boreal
Arctic
Southeastern
East Coast
```
44
How is the West Coast climate like?
```
Cool summers and mild winters
Very wet in the winter
Summer months do not receive much precipitation
Annual precipitation 2400 mm or higher
Maritime climate
```
45
How is the mountain climate like?
Many different climates in this region
Elevation affects local wether
Western mountain face (near water) gets more precipitation
46
How is the Prairies climate like?
```
Large annual temperature range
Moderately dry (annual precipitation is approx. 400 mm)
Hot & dry summers
Extremely cold & dry winters
Continental climate
```
47
How is the Boreal climate like?
Short summers with highs of approx. 15 degrees
Long, cold winters
Precipitation is 200-300 mm annually
Continental climate
48
How is the arctic climate like?
Short, warm & dry summer
Long, very cold & dry winter
Precipitation is 100-150 mm annually
Mainly continental climate
49
How is the East Coast climate like?
```
Ocean moderates temperatures
Winters are cool & wet
Summers are warm
Annual precipitation is greater than 1000 mm
Maritime climate
```
50
What is a deciduous forest?
A forest consisting of mainly trees that regularly shed all their leaves, usually in the fall. The trees are dominant in the winter. May also be called a broad-leaved forest. Examples of deciduous trees include maple, oak and birch.
51
What is a coniferous forest?
A forest containing mainly needle-leaf trees that have cones and softwood trunks. May also be called Boreal forest. Examples of coniferous trees include Douglas fir, cedar, spruce and pine.
52
What is the tree line?
The line at high latitudes and altitudes beyond which trees will not grow.
53
What is a transition zone?
An area that shows characteristics of more than one region. In the case of natural vegetation, the area will contain vegetation from the regions to the north and to the south of it.
54
What is permanent frost?
Permanently frozen soil that does not thaw during the summer.
55
List the vegetation regions of Canada?
| Know where they are on map*
```
Tundra
Boreal and Taiga Forest
Mixed Forest
Deciduous Forest
Grassland
Cordilleran Vegetation
West Coast Forest
```
56
What is it like in the Tundra vegetation region?
Most northerly region
Contains permafrost (permanently frozen ground)
No trees grow here because it is too cold
Vegetation grows close to the ground to absorb heat from the earth's surface
57
What is it like in the Boreal and Taiga Forest vegetation region?
Separated from the tundra by treeline
Trees grow sparsely along the northern edge
Trees become more dense as you move south
Coniferous trees are dominant, but some deciduous trees are also present
58
What is it like in the Mixed Forest vegetation region?
Mix of coniferous and deciduous trees
| Acts as a transition zone between the Boreal forest and the deciduous forest
59
What is it like in the Deciduous Forest vegetation region?
Found exclusively in Southwestern Ontario
| Only small areas of undisturbed natural vegetation are left due to human activity
60
What is it like in the Grassland vegetation region?
Found in southern Saskatchewan, Alberta and Manitoba
| Climate is too dry for trees to grow
61
What is it like in the Cordilleran vegetation region?
Climate & vegetation type vary greatly
| Grasses grow in dry valleys, coniferous trees grow on slopes, and tundra vegetation occurs at the highest elevations
62
What is it like in the West Coast Forest vegetation region?
Lush forests containing large coniferous trees
High rainfall
Sometimes called 'temperate rainforests'
63
Name and describe the 4 components of soil.
Minerals: are created when rock is broken down over long periods of time.
Humus: is the decayed remains of plant and animal life.
Air: is a necessary element of soil because plants need air around their roots to grow.
Water: they need water not only to grow but also for the process of weathering and dissolving the nutrients.
64
What does a typical soil profile contain?
Hummus- top upper layer of soil
Topsoil- dark colour- rich in humus; zone of leaching
Sub-soil- minerals from A horizon deposited
Parent material- weathered parent material (contains mineral from the broken down bedrock)
65
What is humus?
It is the dark upper layer of soil, it's made of decayed plant material, and it's very rich in nutrients.
66
How are new organic materials added to the soil?
Plants and animals decay it.
67
What is leaching?
Leaching is the removal of the soils nutrient by water moving downward through the soil.
68
How does leeching affect the A horizon in soil profile?
Since nutrients move down the soil becomes lighter. It makes the actual zone smaller because there is not as much depth to it.
69
What calcification?
When water carrying minerals move upward threw the soil and evaporate.
70
How does calcification affect the A horizon in the soil profile?
It gets larger because the more it's moving up to the surface.
71
Why can calcification be harmful to vegetation?
To many minerals, it could be toxic, can kill plants
72
Describe grassland soil?
In the grassland, the biggest horizon is the A horizon (top soil). It's dry which means the minerals come up. More organic matter because of early death. Really deep root growth because they have to go further down for water because it's a dry area. Less leaching and more classification.
73
Describe dessert soil?
A horizon in dessert are very small. In a dessert they isn't a lot of organic material because not many plants grow, and not many plants die to create organic material. Since there is so little decomposing plants it makes the A horizon very small and thin. Horizon B and C are approximately the same.
74
Describe the forest soil?
Thick debris at the top. Parent material. The biggest horizon is B, because more rain. A lot of plants grow support wild life top layer really rich and organic. The A horizon is also fairly thick because there's more rain, so that precipitation helps leech things down so that's why the B horizon is the biggest.
75
What is an ecozone?
```
Soil
Climate
Vegetation
Geology
Landforms
Human activities
Wildlife
```
76
Name the ecozones in Canada? *know where it is on the map
```
Mixedwood plains
Atlantic maritime
Boreal Shield
Prairie
Boreal plains
Montane cordillera
Pacific maritime
Hudson plains
Boreal Cordillera
Taiga Cordillera
Taiga plains
Taiga Shield
Southern arctic
Northern Arctic
Arctic Cordillera
```
77
How many national parks are there in Canada?
44
78
What was the first national park in Canada?
Banff
79
What was the first national park in Ontario?
Algonquin
80
What our the 3 purposes of national parks?
To protect natural landscapes
To conserve wildlife & wildlife habitat
To preserve recreational site
81
Why does Vancouver revive more rain than Calgary?
Vancouver is located on the coast on the west side of the mountains. Calgary are in the east side of the mountain ranges. The rain can't get over the mountains so it rains a lot in Vancouver by the time it gets to Calgary all the rain is gone.
82
Describe the climate and vegetation in the Mixedwood plains ecozone.
Deciduous forest
| Southeastern climate
