Oceanic Plates
Plate tectonics was proposed by...
Who is Alfred Wegener
________ were joined together in the past in one landmass.
What are continents?
The crust and upper mantle together are called the ____.
What is the lithosphere?
As Earth's plates collide at plate boundaries they form...
What is mountains and volcanoes
What happens when two plates move away from each other?
What is rising magma makes new crust?
The fact that the ________ rocks are located at the mid-ocean ridges is evidence for seafloor spreading.
What is youngest?
The _____ are forming where the Indo-Australian plate collides into the Eurasian plate.
What is the Himalayas
The inner most layer of earth is...
What is the core?
Oceanic plates are pushed down into the upper mantle in....
What is subduction zones?
The theory that describes Earth's crust and upper mantle as being broken into sections is called...
What is plate tectonics?
Oceanic plates are pushed down into the upper mantle at a _________ zone.
what is subduction zones
Why is Mt. Everest growing taller?
What is the movement of tectonic plates.
The outer most layer of the earth is...
What is the crust?
The plates move apart at ______ boundaries.
What is divergent.
________, occurring in the mantle, are thought to be the force behind plate tectonics.
What is convection currents?
Ocean floor rocks are _____ than continental rocks.
What is younger than.
A rift valley can form where two continental plates are _______.
What is moving apart?
Where do we find most volcanoes?
What is where oceanic plates and continental plates collide?
Where plates slide past one another _____ occur.
What is earthquakes?
Earth's ______ move around on a special layer of the mantle.
What is plates?
Why do scientists believe Antarctica used to be closer to the equator?
The plate Antarctica is on is moving south.
The cycle of heating, rising, cooling and sinking is called a...
What is convection current?
What 2 things happen when an oceanic plate moves below a continental plate?
What is the oceanic plate melts into the magma and magma rises up to form volcanoes.
The presence of the same ______ on several continents supports the idea of continental drift.
What is rocks and/or fossils?