grade 9 geo exam (unit 2) Flashcards
what is global warming?
global warming is the term used to describe the rising average temperature on earth.
which era is the longest/oldest
pre-crambrian
what is weather? what is climate?
weather= the day to day conditions of the atmosphere. lasts a short period of time
climate= the weather conditions for a certain place that lasts a long period of time
what are the ocean currents that affect canada?
warm ocean current= heat the air above it
cool ocean current= cool the air above it
what are the 8 climate regions
arctic
pacific martime
western cordillera
taiga
boreal
praires
southeastern
arctic maritime
what are metamorphic rocks?
these rocks are formed from intense heat and pressure. it also has a combination of other rock types. ex. marble
what is pangea?
made 200 million years ago, the continents made a single giant land called “pangea”. alfred wegner created this theory called continental drift
what are the 4 layers of the earth?
crust, mantle, outer core, inner core
name the 7 landform regions in canada
the canadian sheild
arctic and hudson bay
great lakes st. lawerence
interior plains
appalachian uplands
western cordillera
innuitian mountains
who is john tuzo willson and what did he come up with?
john tuzo willson was the person who created the theory of plate tectonics
what are the 3 plate boundaries?
divergent: plates pulling apart
convergent: plates crashing together
transform: sliding together
what does each plate boundary create?
divergent: volcanoes
convergent: mountains
transform: earthquakes
what are igenous rocks?
these rocks are formed from the solidifaction of molten rock. when magma or lava cools, igenous rock is formed
what scale is used to mesasure earthqaukes
the richter scale
what are the factors that affect climate (LOWERN)
latitude
ocean currents
wind and air masses
elevation
relief
nearness to water