Inside Earth 1.2 & 1.5

Remember convection currents?

Heat from Earth’s core and mantle cause convection currents in the asthenosphere

Heat from Earth’s core and mantle cause convection currents in the asthenosphere REMEMBER – Convection Currents are caused by differences in DENSITY

The Earth is broken into separate sections called plates

**The Theory of Plate Tectonics states that convection currents in the asthenosphere make the lithospheric plates move. ** = Not in notes packet – Have to add it in.

The plates have plate boundaries

3 types of plate boundaries

Transform boundaries Place where 2 plates slip past each other Crust is neither created nor destroyed Earthquakes occur here San Andreas fault in California

Transform boundaries Place where 2 plates slip past each other Crust is neither created nor destroyed Earthquakes occur here San Andreas fault in California