A Mesozoic supercontinent that proved that Earth is once a single landmass is called

• Eurasia

• Laurasia

• Pangaea

• Gondwana

Which of the following increases with distance from a mid-ocean ridge?

• the age of the oceanic lithosphere

• the thickness of the lithosphere

• ocean depth of the ocean floor

• all of these

Which of the following can you infer from continuous movement of the lithospheric plates over the asthenosphere?

• All of the continent will cease to exist.

• All the volcanoes in the Philippines will be inactive.

• The continents will not be located in the same places as they are now.

• The island of the Philippines will become scattered all over the world.

Lithosphere is characterized as rigid layer composed of

• Continental crust

• Crust and upper mantle

• Oceanic crust and continental crust

• Upper mantle

How do you compare the densities of the Earth's crust, mantle and core?

• The mantle is less dense than the core but denser than the crust.

• The mantle is less dense than both the core and the crust.

• The mantle is denser than the core but less dense than the crust.

• The mantle is denser than both the core and the crust.

If you visit a place in the Pacific known to be along converging plates, which of these are NOT expected to see?

• Active volcano

• Mountain ranges

• rift valleys

• volcanic islands

You were provided a data showing the arrival time of the P and S- waves recorded from three seismic stations. Which of these can you possibly determine?

• the damage at the focus

• the distance of the earthquake

• the intensity of the earthquake

• the location of the epicenter

Which of these is FALSE about lithospheric plates:

• Have the same thickness everywhere

• Include the crust and upper mantle

• thickest in the mountain regions

• vary in thickness

Why does the oceanic crust sink beneath the continental crust at the subduction zone?

• It has a greater density

• It is pulled by earth's magnetic field

• It is pushed from the ridge

• it is very light

Why is it important for us to identify areas which are prone to earthquake?

• To be aware of the necessary safety and precautions.

• For new business opportunity

• To know where to buy low cost housing

• For protection of mankind