Geologic History
How old is Earth? Approximately...
4.6 Billion years old
Where was Alfred Wegener from?
Germany
Name the (3) major types of rocks.
Igneous, Sedimentary and Metamorphic
How did the Hawaiian Islands form?
Hot spot
Which direction do the westerlies blow?
Toward the east
This era makes up the majority of the Earth's history.
Precambrian
Describe the theory of continental drift.
This type of rock has ribbon-like layers. Other rocks can change into this type of rock through heat and pressure.
Metamorphic
What region of Canada is most likely to experience major earthquakes? Why
BC - Plates boundaries
True or False.
The West side of Canadian mountains get more precipitation than the East side.
True
True or False.
Dinosaurs roamed the earth during the cenozoic era.
False.
What were Alfred Wegener's (4) proofs to support his theory of continental drift.
- fossils, jigsaw fit, paleoclimate, mountain correlation
Name the (4) layers of the earth from inner to outer.
inner core, outer core, mantle, crust
This type of plate boundary actually creates new land by pulling apart.
Divergent
Why are places near the Great Lakes called "modified" continental climates?
Lake effect precipitation / temps
What is the name of the current era?
Cenozoic
Why did scientists reject Wegener's theory?
Gravel - different sized rocks dropped
What landform is created at a convergent plate boundary?
Mountains
This type of climate has a temperature range of more than 25 degrees and a total annual precipitation on less than 1000 mm.
Maritime or Continental
Continental
Why is Crawford Lake in Milton a popular place for scientists right now?
It is a special lake that preserves layers of sediment at the bottom. Scientists are using the lake to prove we have moved into a new epoch - The Anthropocene.
How do tectonic plates move?
convection currents
This type of rock is durable and desirable for countertops. It often has crystals that catch the eye.
Igneous
The _________ ZONE is where one plate gets pushed under another. This zone causes the most powerful earthquakes.
Subduction
Why are the east coast maritime cities colder than the west coast?
- westerlies blow warm current away from east coast
- nearby a colder ocean current
- latitude - further north