Science 10 First Quarter REVIEW

Which statement about the Earth's crusts is CORRECT?

• Continental crust is heavier than oceanic crust

• Continental crust is thicker than oceanic crust.

• Oceanic crust is thicker than continental crust

• Continental and oceanic crusts have the same weight.

What makes the continental crust differ from oceanic crust?

• consists of basalt rock

• made up of granite rock

• denser than oceanic crust

• has the same density as oceanic crust

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

• A. All continents will cease to exist.

• B. All the volcanoes in the Philippines will become inactive.

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

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

What makes the Pacific plate unique compared to other plates?

• It borders the African Plate.

• It is the smallest of the major plates.

• It is the only major plate that is mainly underwater

• It is the only major plate that contains both continental crust and oceanic crust.

Why are there no P- waves or S- wave received in the P- wave shadow zone?

• Both P and S- waves are absorbed by the earth's outer core.

• Both P and S- waves are refracted by the earth's outer core.

• P- Waves are absorbed and S- waves are refracted by the earth's outer core.

• P- waves are refracted and S- waves are absorbed by the earth's outer core

What happens in primary waves when they pass from liquids to solids?

• stay the same

• Slow down

• Speed up

• Stop

What can you obtain from the seismograph?

• Speed of the surface wave.

• Arrival time of surface wave

• Difference in the arrival times of P and S- wave

• Ratio of the amplitude of the largest P and S- wave

Where is the epicenter for this earthquake located on a given point?

• A

• B

• C

• D

Which CORRECT sequence of events should be followed to locate the epicenter of a recent earthquake?

I. Use the triangulation method to locate the center.

II. Obtain data from three different seismological stations.

III. Determine the distance of the epicenter from the station

IV. Determine the difference in the arrival time of S and P - waves recorded from each of the seismological stations.

• I, II, III, IV

• II, IV, III, I

• IV, II, I, III

• III, I, IV, II

The Philippines is prone to an earthquake because of the _____.

I. Weather

II. Fault lines

III. Volcanoes

IV. Bodies of water

• I AND II

• I AND III

• II AND III

• I, II, III AND IV