The Spheres
The solid outer shell of the earth
lithosphere
the thing outermost layer of the earth
crust
theory that continents slowly moved over earth's surface
continental drift
heat energy from inside earth
geothermal energy
the layer of gases surrounding the earth
atmosphere
the thick middle layer of hot, semi-solid rock
mantle
the scientist who proposed continental drift
Alfred Wegener
renewable resources use earth's internal heat to generate electricty
geothermal energy
All of earth's water - oceans, rivers, groundwater
hydrosphere
the dense center made of iron and nickel
core
the supercontinent that existed 300 million years ago
Pangaea
which layer provides the heat for geothermal energy?
mantle/core
sphere that includes mountains, rocks, soil
lithosphere
which layer is divided into oceanic and continental types?
crust
evidence that supports continental drift
fossils, mountain ranges, climate evidence
example of where geothermal energy is used today
which sphere includes hurricanes and tornadoes
atmosphere
which layer is responsible for convection currents that move tectonic plates?
mantle
plate boundaries where plates move apart are called
divergent boundaries
explain how geothermal energy is formed