unit 2 quiz

What is the asthenosphere?

• the outermost layer of Earth

• a rigid layer of the lithosphere

• a slow-flowing part of the mantle

• a ridgid part of the upper mantle

Which of the following are parts of the Global Postioning System (GPS) for monitoring plates?

• high-precision GPS receivers

• satellites that orbit the Earth

• all of the above

• targets located on continents

The latitude graph indicates that station CASA moved at a rate of ....

• 13.3 +/- 0.3 mm/yr west

• 27.5 +/- 0.3mm/yr east

• 27.5 +/- 0.3 mm/yr north

• 27.5 +/- 0.3 mm/yr south

What layer contains most of the Earth's mass?

• inner core

• outer core

• mantle

• crust

Which of the following is NOT true as you go deeper into the earth?

• temperature increases

• pressure increases

• density increases

• temperature decreases

The United States is commited to maintaining how many GPS satellites in orbit?

• 15

• 24

• 30

• 100+

What is the combination of the upper Mantle and crust called?

• geosphere

• asthenosphere

• lithosphere

• cryosphere

What type of crust is older?

• Oceanic

• Continental

• Both are same age

Which type of crust is thinner? 

• oceanic crust

• Continental crust

• Both are roughly the same thickness

What type of crust is denser?

• Continental crust

• Oceanic crust

• Both are the same density