Plate Tectonic Review!!
Crumple and Toss Review Work in groups of 4 (rows 1 and 3 turn around) All answers written on adding machine tape If correct, one person takes a shot at the recycle bin. If they make it, your team scores a point. If they miss, no points If they get it in the trash, your team loses a point! Candy for the winning team(s) at the end.
This layer of the Earth is approximately 5-40 km deep and contains the Earth’s surface and the ocean floor.
THE CRUST
This layer of the Earth consists of two layers, makes up about 80% of the Earth’s volume, and is almost 3,000 km deep.
THE MANTLE THE TWO LAYERS ARE _______?????
Lithosphere Asthenosphere
What two metals is the core made out of???
IRON AND NICKEL
What is the difference in consistency between the inner core and the outer core?
INNER CORE: SOLID METAL OUTER CORE: MOLTEN LIQUID METAL
What two things increase as you go deeper into the Earth???
TEMPERATURE and PRESSURE
What type of currents are in the mantle?
CONVECTION CURRENTS
The tectonic plates are the ____________ layer of the mantle, while they slide around on the _______________ layer of the mantle.
The tectonic plates are the Lithosphere layer of the mantle, while they slide around on the Asthenosphere layer of the mantle.
About how much do the tectonic plates move every year??? A. 50-100 m per year B. 1-10 mm per year C. 50-100 inches per year D. 1-10 cm per year
D. 1-10 CENTIMETERS PER YEAR
What are the three types of plate tectonic boundaries??
TRANSFORM, DIVERGENT, and CONVERGENT
What is a transform boundary?
When two plates slide past each other in opposite directions… When two plates slide past each other in opposite directions….EARTHQUAKE BOUNDARY!
What is a convergent boundary???
When two plates run into each other and form MOUNTAINS!! Or one plate goes on top of the other plate and forms a subduction zone and volcanoes!
What is a divergent boundary???
A boundary in which tectonic plates pull away from each other and form new land, a rift valley and/or a mid-ocean ridge
What is the name of the longest mountain chain in the world and where is it located?
Mid Ocean Ridge….Atlantic Ocean
What scientist came up with the theory of continental drift?
Alfred Wegener
What is the Uniformitarian Principle?
“The present is the key to the past “The present is the key to the past..” (whatever processes happening now, happened in the past, too)
What is the process called where material travels down ocean trenches, under another plate and back into the mantle?
SUBDUCTION
Where will most volacanos and earthquakes occur?
Along fault lines/Plate boundaries
Who came up with the theory of Pangaea?
Alfred Wegener
Bonus Questions
What two forces act on the material being pushed down the trench (subduction zone)?
Gravity and convection currents
Which Ocean is shrinking?
PACIFIC
Which ocean is expanding?
Atlantic
The End!