1. Plate Tectonics

2. Crust The Earth’s outer layer or shell
Made mostly of oxygen and silicon

3. the layer of rock that surrounds the core
Mantle
the layer of rock that surrounds the core
Convection in the mantle cause the tectonic plates to move.

4. Convection Currents
Cycles created by hot materials rising, cooling off, and then sinking back down

6. Core
the innermost layer of Earth, made mostly of the elements iron and nickel
The outer core is molten. The inner core is solid.

7. Lithosphere
the outer zone of Earth, made of the crust and upper mantle /makes up the tectonic plates
The mantle is made up
of 3 sub layers:
Lithosphere
Asthenosphere
Mesosphere

8. The slowly flowing, semi-solid layer of rock under the lithosphere
Asthenosphere
The slowly flowing, semi-solid layer of rock under the lithosphere
Tectonic plates “float” on the semi-solid asthenosphere.

9. the strong, lower part of the mantle
Mesophere
the strong, lower part of the mantle

10. Theory of Continental Drift
The idea that Earth’s continents were once connected and have broken apart and drifted to their present location
German geologist, Alfred Wegener, was the first to describe continental drift.

11. Plate Tectonics
the theory that the outer part of Earth is divided into several distinct segments, called plates which move

12. A border where tectonic plates move towards one another
Convergent Boundary
Result:
volcano or
deep ocean trench
A border where tectonic plates move towards one another
Result:
volcano or
deep ocean trench
Converge means to come together.
Result:
folded
mountain
range

13. Divergent Boundary
A border where tectonic plates move apart from each other
Result:
new oceanic crust is formed
Diverge means to divide.

14. A border where tectonic plates slide past each other
Transform Boundary
A border where tectonic plates slide past each other
Result:
earthquake

15. The remains of traces of past life
Fossil
The remains of traces of past life