Topic 12 + 14 Dynamic Crust and Landscapes

According to the Earth Science Reference Tables, as depth within the Earth's interior increases, the

• density decreases, but temperature and pressure increase

• density and temperature decrease, but pressure increases

• density, temperature, and pressure increase

• density, temperature, and pressure decrease

According to the Earth Science Reference Tables, in which part of the Earth is a rock temperature of 2,000°C most likely to occur?

• asthenosphere (plastic mantle)

• outer core

• continental crust

• stiffer mantle

According to the Earth Science Reference Tables, in the Earth's interior, which zone has a temperature higher than its melting point?

• inner core

• stiffer mantle

• crust

• outer core

Which diagram below best shows the pattern of normal and reversed polarity on the west side of the mid-ocean ridge?

• 
• 
• 
• 

According to the Earth Science Reference Tables, which map best shows the direction of movement of the oceanic crustal plates in the vicinity of the East Pacific Rise (ridge)?

• 
• 
• 
• 

Which diagram best represents how P-waves and S-waves travel through the Earth?

• 
• 
• 
• 

At a seismograph recording station, the difference between the arrival times of an earthquake's compression wave (P-wave) and its shear wave (S-wave) is 8 minutes 20 seconds. According to the Earth Science Reference Tables, how far from the station is the epicenter?

• 6,800 km

• 5,000 km

• 2,400 km

• 4,500 km

The epicenter of an earthquake is 6,000 kilometers from an observation point. What is the difference in travel time for the P-waves and S-waves?

• 7 mm 35 sec

• 17 mm 00 sec

• 9 mm 20 sec

• 13 mm 10 sec

What was the origin time of this earthquake?

• 6:11:20 p.m.

• 6:06:00 p.m.

• 6:00:00 p.m.

• 5:55:00 p.m.

Features such as mountains, plains, and plateaus divide continents into

• landscape regions

• erosional activity areas

• natural resource zones

• crustal activity zones