Transcript Continent

Earth’s Landmasses
Chapter 4
Terms
Island and coral reefs
Continent and tectonic
plate
3. Topography and
Elevation on relief maps
4. Mountain and mountain
range
5. Mountain system and
Mountain belt
6. Canyons and valleys
7. Coastline or Shorelines
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8. Plateau and bluffs
9. Map and globes
10. Meridian and
Longitude
11. Time zones
12. International date line
13. Equator and latitude
The Continents
List the Seven Continents
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Definitions
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Continent – A landmass that measures
millions of square kilometers and rises a
considerable distance above ____ _____.
Island – A small landmass completely
surrounded by _____.
Continental Shield – A large area of very old
rock that forms the core of a _______.
Antarctica – The third smallest continent,
which is almost completely covered by a thick
________.
Australia – The smallest continent, which is
completely surrounded by an __________.
More Information
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An island is a small landmass completely
surrounded by water, and a continent is a
large landmass that measures millions of
square kilometers and rises a considerable
distance above sea level.
Europe, Asia, and Africa make up the largest
landmass on Earth.
Antarctica is almost completely covered by a
thick icecap, and it is the coldest area on Earth
with explorations just starting back in 1901.
Australia is the smallest continent.
4-2 Topography
Topography is the shape
of the earth’s surface.
What causes the surface
differences?
1. Weather
2. Running water
3. Soil types
4. Earthquakes
5. Volcanoes
6. People building etc…
Topography of the United States
Three Main Types
of Landscape Regions
Mountains –
highest mountain
highest mountain in the US
Plains –
Plateaus –
One characteristic of a landscape region is elevation.
The difference in a region’s elevations is called its _______.
Landscape Regions
Mountains – natural
landform that reaches
high elevations with a
narrow summit, or top,
and steep slopes, or sides
Mountain range – is a
group of mountains,
roughly parallel with
similar shape
Mountain system – is a
group of mountain ranges
Mountain belt – even
larger group of mountains
Mount St. Helens
Washington State
May 18, 1980
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Morning of May 18, 1980—
The largest terrestrial landslide
in recorded history reduced
the summit by 1,300 feet and
triggered a lateral blast.
3 minutes the lateral burst
travels 300 miles per hour and
scorched 230 square miles
Active from May 18 through
Oct 1980
The youngest glacier has
formed in the crater
Ash drifted across US for 3
days and around the Earth for
15 days
Landscape Regions
Plains – flat land area that
does not rise far above
sea level
Coastal plains – flat areas
along the coast where
land meets the ocean
Interior plains – usually
higher than coastal
plains, low flat areas
inland part of continent
Landscape Regions
Plateaus – broad, flat area of land that rises more
than 600 meters above sea level
Grand Canyon
Questions
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Because of the abundance of fertile soil, farming is a major
activity in these areas. __________
These broad, flat areas rise more than 600 meters above
sea level. _________
Most of these regions on Earth are located within two major
belts. _______
These areas are characterized by broad rivers and streams.
_____________
The Grand Canyon is formed in one of these regions. _____
These regions have narrow tops, steep slopes, and very
high relief. ________
The difference between highest and lowest elevations in
these regions may be less than 100 meters. ___________
These regions may form from volcanic activity.
___________
Questions
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Because of the abundance of fertile soil, farming is a major
activity in these areas. _Plains_
These broad, flat areas rise more than 600 meters above
sea level. __Plateaus
Most of these regions on Earth are located within two major
belts. _lMountains_
These areas are characterized by broad rivers and streams.
__Plains__
The Grand Canyon is formed in one of these regions.
__Plateaus
These regions have narrow tops, steep slopes, and very
high relief. Mountains
The difference between highest and lowest elevations in
these regions may be less than 100 meters. _Plains___
These regions may form from volcanic activity.
__Mountains__
Topography of United States
4-3 Mapping the Earth’s Surface
Maps show locations and distances
on the Earth’s surface.
They also show many
different local features.
Some maps show the soil types in an
area. Some show currents in the
ocean. Some maps show small,
detailed areas of the Earth. Maps of
cities may show every street in those
cities.
Maps, what does each show?
Review Terms
Draw a picture to illustrate
each term, then write a
short phrase to describe
it in words.
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Island
Continent
Topography
Elevation
Relief
Mountain
Mountain range
Mountain system
Mountain belt
Coastal plain
Interior plain
12.Plateau
13.Map
14.Globe
15.Scale
16.Meridian
17.Prime Meridian
18.Longitude
19.Time zone
20.International date line
21.Parallel
22.Equator
23.Latitude
Longitude
Latitude