Oceanography chap 4 test review

What type of sediment starts on the continents?

• lithogenous
• biogenous
• hydrogenous
• cosmogenous

What size sediment would you find in a high energy environment?

• Clay-size particles 
• Cosmogenous sediments
• large size particles such as gravel
• Manganese nodules

Ocean sediments consist of particles that have slowly settled out of the water by which of the following the processes?

• Grain lithification
• Suspension settling
• Porosity reduction
• Sediment compaction

Which of the following statements about marine sediments is correct?

• They represent Earth history dating back for billions of years.
• They contain plant fossils used to map the movement of the continents. 
• They provide a discontinuous, disturbed record of Earth history. 
• They record the timing and severity of some global extinction events.

The term referring to the size and shape of sediment particles is ________.

• fabric
• composition
• provenance
• texture

Collecting adequate samples from which of the following is the most difficult?

• Continental shelf
• Estuaries and lagoons
• Marine sediments on land
• The deep-ocean floor 

Which of the following was used during early exploration of the oceans to collect sediment samples?

• Dredge
• Gravity corer
• Rotary corer
• Seiche disk

Which of the following is a hollow steel tube with a heavy weight on top that is to collect sediment samples?

• Dredge
• Gravity corer
• Rotary corer
• Seiche disk

Which of the following is the most advanced technology used to collect sediment samples from the deep ocean?

• Dredge
• Gravity corer
• Rotary corer
• Seiche disk

How many holes have been drilled into the sea floor using a drill ship to collect cores for scientific study?

• Less than 500
• 500 to 1000
• 1500 to 2000
• More than 2000