Earth Structure
Earth Structure 2
Earth Structure 3
Plate Boundaries
Plate Boundaries
100
What are the hottest and coldest layers of earth?
Core and Crust
100
Where do most of the real changes to the Earth's surface occur?
At plate boundaries
100
What is the name of the supercontinent that was once all the continents combined?
Pangea
100
What happens to tectonic plates at divergent boundaries?
The plates spread apart
100
What happens to tectonic plates at convergent boundaries?
The tectonic plates crash into each other.
200
How do volcanios form?
lava bursts and convergent bounderies
200
What causes mid ocean ridges?
Sea Floor Spreading
200
What are mid ocean ridges?
Underwater mountain ranges
200
What happens at strike-slip boundaries?
The tectonic plates slide past each other.
200
What is the main thing that occurs at Oceanic - Continental Convergent boundaries?
Volcanoes
300
Label the four parts of the Earth.
Outermost to innermost: Crust, Mantle, Outer Core, Inner Core
300
Which kind of tectonic plate is thicker?
Continental
300
What is pangea?
A supercontinent 250 million years ago
300
What is the main thing that forms at oceanic-oceanic convergent boundaries?
Mountains that usually turn into islands.
300
What is the main thing that occurs at continental-continental boundaries?
Tall Mountains
400
What are the two things the crust is made up of?
Oceanic and Continental Plates
400
Which kind of tectonic plate is more dense?
Oceanic
400
How far do plate tectonics move per year?
0-10cm or 4 cm average
400
What is the main thing that occurs at oceanic - oceanic divergent boundaries?
Mid ocean ridges
400
Name 3 natural disasters that occue due to tectonic plate movement
Earthquakes, Tsunamis and Volcanos
500
How does mantle convection work?
Hold mantle falls to core, gets heated up and rises again in an continuious cycle.
500
Name the 2 solid layers of earth
crust and core
500
What proved the theory of Plate Tectonics to be true?
Sea Floor Spreading
500
How hot is the core?
5000-6000 degrees
500
What happens when plates diverge away from eachother?
valleys are created