Plate tectonics

Question 1

what is plate tectonics

Answer 1

the theory states that the earths outer shell is made up of about 20 plates that move over a layer of hot rock. the hot layer of rock creates an unequal distribution of heat within the earth, which creates convection currents. the movement of these plates have caused earthquakes volcanoes and mountains

Question 2

who discovered plate tectonics?

Answer 2

a german scientist named sir alfred wegener

Question 3

what are the 4 pieces of evidence of plate tectonics?

Answer 3

1. current land masses seem to fit together
2. mountains chains around the world are roughly the same age
3. animal+plant species were found on two different continents with no possibility of crossing oceans
4. evidence of glaciers in southern climates and tropical fossils in northern climate