Ch 4 Test

What is the correct order (from the surface) of Earth's layers?

• crust, outer core, inner core, mantle
• mantel,outer core, inner core, crust
• crust, mantle, outer core, inner core
• outer core, inner core, crust, mantle

Earth's inner core is . . . . 

• a dense ball of solid metal
• a layer of molten metal
• a layer of hot rock
• Earth's outer skin

Earth's magnetic field comes from the  . . . . (look at the picture)?

• crust
• inner core
• outer core
• mantle

To go to the center of the Earth would be the same as 

• traveling to the Moon
• traveling from Patterson to Los Angeles
• traveling from San Francisco to 400 miles into Atlantic Ocean
• traveling San Francisco to Atlanta,GA

Convection Currents flow in Earth's . . . . 

• mantle
• atmosphere
• biosphere
• hydrosphere

Wegener's hypothesis of "Continental Drift" was . . . .

• 7 major tectonic plates
• continents do not move
• Earth's plates are slowly cooling and shrinking
• once joined together in a single landmass

We get direct evidence of Earth's layers from . . . . 

• Primary Waves
• Secondary Waves
• Surface Waves
• Both P & S Waves

Direct evidence of the layers of Earth come from . . . . 

• igneous rocks only
• seismic waves
• satellite photos
• core drillings of Earth

Alfred Wegener developed the "theory" of . . . . 

• Pangaea Ultima
• Pangaea
• 7 major continents
• Continental Drift

The difference between a scientific law, and a scientific theory is . . . . 

• laws are observed doing the same thing every time
• laws are no different from theories
• laws are slightly different from theories
• there is no difference