Explain
Display
True or false
Random
Memory
100
What is Pangaea ?
The supercontinent that all continents were connected.
100
Display the divergent plate boundaries
Two plates separate .It may form mid-ocean ridge(Two oceanic plates separate) or continental rifting(Exit in the middle of a continent).
100
The continent plate moves fast.
False.
100
where does seafloor spreading occur ?
Mid-ocean ridge
100
What is Earth's outermost layers includes the crust and the upper mantle ?
Lithosphere
200
Two evidences to support continental drift.
Climate clues ,Fossil clues ,Rock clues
200
Display the seafloor spreading .
New oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away form the ridge
200
Seafloor is flat .
False
200
Which type of plate boundary is shown in the figure below ?
Divergent boundary
200
What boundaries are associated with Mid-ocean ridges ?
Divergent plate boundaries
300
What is the theory of Plate Tectonics?
Earth's surface is made of rigid/hard slabs of rock that move with respect to each other .
300
Display the same density of two continental plates collide
Form mountain
300
Ocean crust is produces at the mid-ocean ridge .
True.
300
Which boundaries does two plates of equal density form mountain ranges along ?
Continent-to-continent convergent plate boundaries.
300
What hypothesis did Alfred Wegener propose ?
Continental drift .
400
What is subduction ?
A process that the denser plate sinks below the more buoyant plate .
400
Display the Transform plate boundaries.
Two plates slide past each other ,may results earthquake .
400
Scientists used echo sounder to determine the depth of ocean .
True
400
Which boundary will result in a rapid release of energy as earthquakes?
Transform plate boundary
400
What is formed when two oceanic plates collide?
Trench
500
Why does tectonic plate move?(Hint : Asthenosphere , Lithosphere)
The asthenosphere moves underneath the lithosphere
500
The seafloor spreading helps to explain the continental drift hypothesis.
True
500
which forces cause plate motion?
Basal drag , Ridge push , Slab pull.
500
What is slab pull?
As a slab sinks ,it pulls on the rest of the plate with a force called slab pull
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