germ-x team
watch the continents move!
moutain sea floor-spreading
LETS SPLIT!!
Your Country On The Move
100
the outer layer of the Earth.
What is crust?
100
this young german scientist became curious about the relation between the continets
What is Alfred Wegener
100
The Glomar Challenger,a drilling ship built in 1968, gakthered the samples.
What is evidence from drilling samples?
100
where oceanic crust bends downwards.
What is deep-ocean trenches?
100
Where plates meet.
What are plate boundaries?
200
The thicks layer of Earth.
What is mantle?
200
the hypothesis that the continents slowly move across earths surft
What is continental drift
200
Change rocks shaped like pillows or like toothpaste sqeeze from a tube.
What is evidence from molted material?
200
the process by which ocean floor sinks beneath a deep-ocean trench and back into the mantle.
What is subduction
200
Where two plates move apart
What are divergent boundaries
300
the solid
What is inner core?
300
the continents drifted together to form the surper continent
What is Pangea
300
This device bounces sound waves off underwater objects and then records the echeos of these sound waves.
What is sonar?
300
the vast Pacific Ocean covers this much of the Earth.
What is one third
300
Where two plates come together
What are convergent boundaries?
400
The upper most part of the mantle and the crust together form a rigid layers.
What is lithosphere?
400
early in the 1900s one scientist began to think that the what could have once been joined in a single landmass :) hehe
What is continents
400
This curves like a baseball seam.
What is mid-ocean ridges?
400
over time, the whole ocean gets wide.
What is growing a ocean
400
Where two plates slip past each other.
What are transform boundaries?
500
The core is made of these two things.
What is iron and nickel?
500
500 years ago columbus and other explorers changed the map of the world
What is sea voyagers
500
This american geologist was one of the scientist who stuidied mid-ocean ridges.
Who is Harry Hess?
500
this causes the Earth to spread.
What is sea-floor spreading?
500
Valleys formed along divergent boundaries
What are rift valleys?
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