Card Set Information
Rocks and etc
What is an era?
A period of time considered to be dinstinctive
What are the four geologic eras?
Which era is the earliest?
What are two important facts about the precambrian era?
*Era of mountain building
*Canadian shield formed of the three different kinds of rock
Which era is the ancient?
Name three important facts about paleozoic era?
*Sediments from shield deposited from shallow seas
*living organisms in seas at first, then insects and amphibians
*Plant/forests first appeared
Which era was created in the middle?
Name three important facts about mesozoic era
*Pangaea began to break up
*Plates collided, mountains formed
Which is the most recent
Name four important facts about cenozoic
*Ice ages, may not be the last one
* age of mammal and humans
*Our impact, in a short period of time and has been enormous
What are three kinds of rock
What is a Igneous Rock
Hardened molten lava
what is Metamorphic
Heated/ pressurized Igneous rock
What is sedimentary rock
Broken down rock
What is Pangaea?
Pangaea is the name of the continents when they were joined together forming a super continent; Pangaea.
What are the three main parts of the earth?
How many plates is the earth made up of?
What does the movement of the plates cause?
The cracks formed in the earths crust created by earthquakes are called:
Hot rock called _______ may force it's way to the surface.
Magma is called______when above the crust. It builds up layer after layer causing a_____to be formed.
The earths crust can be changed by:
The four main elements of erosion are:
Glaciers covered parts of north america ___ million years ago.
What are the three main areas of Canada?
What is another name for the Canadian shield?
Precambrian shield because it was formed in the Precambrian era
Canadian shield has rock which is over___million years old.
What are the two kinds of rock that make up most of this region?
Igneous and metamorphic
The hudson bay and arctic lowlands are covered by flat____ and some forest.
What kind of rock does it have
Great lakes and st. lawrence lowlands has a______-landscape carved by_______.
What kind of rock does it have?
What does the shield have a great resource of which gives it another name, what are some of thses metal?
Canada's storehouse of metallic metals
because contains valuable minerals
lead, gold, nickel, copper, zinc