Unit test review for Wednesday Sept. 22
Physiograpic regions
Western Cordillera (British Columbia and Yukon)
Interior planes (Alberta, Saskatchewan, Manitoba)
Arctic and Hudson Bay Lowlands (Manitoba, Ontario, Quebec, Nunavut)
Innuatian (high arctic in the Northwest territory
Canadian Shield (Nunavut, Northwest Territory, Saskatchewan, Manitoba, Ontario, Quebec, Newfoundland)
Great Lakes-St. Lawrence Lowlands (Quebec and Ontario)
Appalachian (Newfoundland, Nova scotia, New Brunswick, Quebec)
Tsunami
A tsunami is a series of large waves that can be triggered by an earthquake that occurs underneath the ocean floor.
Usually, results after the interaction of tectonic plates which displaces an enormous amount of water, sending a shockwave outward (sesmic sound wave) in all directions that can travel at more than 500km/hr.
The Universe, The Milky Way and Earth
The waves grow in intensity and size as they approach shallower water near a Continental shelf or shoreline
The area of a seadbed around large landmass where the sea is shallow.
the line along which a large body of water meets the land.
What is a continental shelf and shoreline?
What is reverse and debris?
Reverse means move backwards. A tsunami can only be stopped by higher ground, when upon reaching, it reverses its path and drags enormous amounts of debris out to sea.
Debris means scattered pieces of waste or whats left over.
What is a landform region? A landform region is an area with different types of natural physical features
Theories
The god theory: God made the earth, the sky, and the animals in 7 days.
The big bang theory: 13.5 billion years ago, all matter was contained in one big ball. An explosion occurred causing all matter to shoot out in all directions in space forming nebula, galaxies, solar systems, and planets.
Earth's moving continent
Continents were once joined into a supercontinent called Pangaea which means (all land)
Continental drift 1915 (Alfred Wegner believed that continents were once formed together, he noticed that the continents were like jigsaw puzzles that were once connected but then drifted apart from each other because of their constant movement in inches/feet per year.
What is a lithosphere, asthenosphere and convection currents?
Lithosphere: earth's outer layer or can be called earth's crust. Is made with different types of rock and is a 100km thick (solid)
Asthenosphere: below the lithosphere we have the asthenosphere which is the upper layer of the earths mantle. The asthenosphere is made with molten/liquid
Convection currents: convection currents shift heat from one place to another with mass motion like water, air, or molten rock. for example boiling water.
Jigsaw fit: there was a jigsaw fit between Africa and South America.
Fossils: preserved remains of plants and animals whose bodies were buried in sediments
Rocks: mineral composition
Glaciers: Huge piece of ice that moves over land.
A submarine is a warcraft that is able to go operate on it's own underwater.
Theory of plate tectonics
In present time, scientists believe that there are 20 tectonic plates that make up the earth's outer layer creating earthquakes, volcanic eruptions and mountain building.
Tectonic plate boundaries
Types of volcanoes
Ice Ages and Glaciers
Theory of Continental Drift