The Earth
History
Earthquakes
Plate Tectonics
100
True or False; The Thickest Layer of the Earth is the Crust?
False, the crust is the thinnest layer of the earth
100
How old is the earth?
4.5 Billion years old
100
What is an earthquake?
The bumping and rubbing of two tectonic plates. The plates will release a build up of energy to generate shaking when the plates move
100
What is plate tectonics?
Earth is covered in many large "plates" that make up the earths crust.
200
Name all the layers of the earth
Crust, Mantle, Outer Core, Inner Core
200
About 225 million years ago, all continents joined together to form this super-continent
Pangaea
200
When mapping all the volcanoes and earthquakes around the pacific ocean, what was the name of the pattern that was formed?
The Ring of Fire
200
What major event before 1960's led to developing technology that helped discover plate tectonics?
WW2
300
True or False; the inner and outer core of the earth are both solid
False, only the inner core is solid
300
Who came up with the theory of Continental Drift
Alfred Wegener
300
What is an aftershock?
Small tremors felt after an earthquake as plates still release pressure.
300
What "plate" are we on?
North American Plate
400
True or False; Scientists have tried to drill to the center of the earth?
False, it is physically impossible to go that deep
400
TEAM CHALLENGE What four pieces of evidence did Wegener have to support his theory of continental drift?
1) Shape of continents looked like puzzle pieces 2) Matching Fossils 3) Similar Landforms (mountain ranges) 4) Glacial Striations
400
What is the name of the machine that measures earthquakes?
Seismograph
400
What type of crust is the ocean floor and which one is the continents?
Oceanic Crust and Continental Crust
500
Which of these items most accurately resemble a cross section of the earth? a) kiwi b) hard-boiled egg c) pineapple
b) hardboiled egg; it has a very thin outer shell that is brittle, a mantle (egg white) and the yolk represents the core.
500
What piece of information did Wegener not have to complete his theory?
He could not explain how the continents moved
500
TEAM CHALLENGE Name 3 things you should do and 3 things you should not do during an earthquake
Answers may vary
500
What is the mountain range that runs down the middle of the ocean?
The mid-ocean ridge
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