SCIENCE Q1

What makes up the lithosphere?

• continental crust

• crust and upper mantle

• oceanic and continental crust

• upper mantle

Which refers to the smaller sections of Earth's lithosphere?

• asthenosphere

• crust

• mantle

• plate

Which is NOT a primary tectonic plate?

• African plate

• Arabian plate

• Eurasian Plate

• Indo-Australian plate

SAMPLE A

It has a density of 3.0 g/cm3 and is primarily composed of basaltic rocks

SAMPLE B

It has a density of 2.7 g/cm3 and is primarily composed of granite rocks

• both sample A and sample B are oceanic crust

• both sample A and sample B are continental crust

• sample A is continental crust and sample B is oceanic crust

• sample A is oceanic crust and sample B is continental crust

Plate A and B are classified as primary plate while plate C and D are classified as secondary plate. Which of the following are TRUE about these plates

• plate A and B are larger plates while plate C and B

• plate A and B are smaller plates while plate C and D are larger plates

• plate A and B are denser plates while plate C and D are less dense plates

• plate A and B are less dense plates while plate C and D are denser plates

Which statement CORRECTLY describes a primary wave?

• it moves slower than a secondary wave

• it is faster than a secondary wave

• it cannot travel through solids

• it causes the most damage during an earthquake

What is needed to determine the distance of the epicenter to a seismic recording station

• arrival time of surface wave

• the arrival time difference between the P-wave and S-wave

• speed of the surface wave

• the depth of the earthquake focus

You were asked to locate the epicenter of a recent earthquake. Which sequence of events should you follow?

I. Determine the difference in the arrival time of P- and S-waves recorded from each of the seismic recording stations

II. Use the triangulation method to locate the epicenter

III. Obtain data from the three different seismograph stations

IV. Determine the distance of the epicenter from the station

• I, III, II, IV

• III, IV, I, II

• III, IV, I, II

• III, I, IV, II

On Earth's surface, how are active volcanoes distributed?

• randomly scattered all over the continents and oceans

• evenly distributed across the entire surface of the Earth

• found only on land and never under the ocean

• not randomly, scattered near plate boundaries

Which NOT used by scientists as a basis for dividing the lithosphere into several plates

• political boundaries

• mountain formation

• seismic activity

• volcanoes