Geography tectonic plates Flashcards
What is the thickest layer?
Mantle
Which two layers are entirely solid?
Crust,Inner core
What are the 4 major layers of the Earth?
Mantle,Crust,Outer core,Inner core
What is a hot spot?
A thick, super heated plume of magma in the midlde of a tectonic plate
True or false? Volcanoes occur at conservative plate boundary?
False
What direction do plates move in at convergent plate boundaries?
Towards each other
Two characteristics of a shield volcano.
Gentle sloping sides,the lava is thick and runny
Two characteristics of a composite volcano.
Narrow base,infrequent
What is the name of the scale that earthquakes are measured on?
Richer scale
What cause earthquakes?
By a build up of pressure then is released
What are the two different types of crust?
Continental,oceanic
What does magnitude mean?
The size of the earthquake(how much the ground shakes
How can the impact of earthquakes be reduced?
Steel metal frame work earthquake drills in school
What is the name of the process that causes the Earth’s tectonic plate to move?
Convection currents
Which type of crust is more dense?Why is this significant?
Oceanic because it would go under the continental as its more dense