1. Study Guide 6-1
Earth’s Structure

2. How could the deep interior of Earth be mapped?
The deep interior of Earth can be mapped using seismic waves

3. What does Continental and Oceanic Crust mostly consist of?
Oxygen, silicon and aluminum

4. Define the following terms:
Magnetic reversal
Core
Process by which Earth’s magnetic pole change places
The central part of the Earth, below the mantle; The layer of Earth made mostly of iron

5. Define the following terms:
Fossils
Items that provide evidence that the continents were once close together

6. Define the following terms:
Seismic waves
Sea-floor spreading
Vibrations produced by an earthquake
Process by which new oceanic lithosphere form