Geological Eras
What is the oldest geological era?
Precambrian Era
Who proposed the theory of continental drift?
Alfred Wegener
What are the four layers of the Earth?
Crust, mantle, outer core, inner core
What is subduction?
One plate slides under another
Which era is known as the "Age of Dinosaurs"?
Mesozoic Era
What is the name of the supercontinent that existed 300 million years ago?
Pangaea
Which layer of the Earth is the hottest?
Inner core
What type of landform is created by subduction?
Volcanic mountains or ocean trenches
Name one force that shaped Canada’s landform regions during the Precambrian Era.
Volcanic activity, earthquakes, etc.
Name a piece of evidence Wegener used to support continental drift.
Fossil evidence, jigsaw fit of continents, geological evidence
What layer is responsible for plate movement?
Mantle, because of convection currents
What are the three types of plate movements?
Convergent, divergent, transform
What era saw the formation of the Rocky Mountains?
Mesozoic Era
What happens when two continental plates collide?
They push against each other, forming mountain ranges like the Himalayas.
What is the thickest layer of the Earth?
Mantle
What type of plate movement creates mid-ocean ridges?
Divergent plate movements
What era are we currently in, and what major events have happened during this time?
Cenozoic Era; Ice Age, human evolution, etc.
What eventually proved that continents move?
Plate tectonics and convection currents in the mantle
Describe how the movement of material in the mantle causes plate tectonics.
Convection currents drive the movement of plates. In other words, HEAT.
What type of plate movement causes earthquakes?
Transform plate movements, where two plates slide past each other.