BJU Earth Science Chapter 15

Satellite radars can detect only large changes in sea level.

Due to the dangers involved, no one would ever consider diving to Challenger Deep alone.

Tethered submersibles used for underwater monitoring are called ________.

The one hazard of deep diving that cannot be corrected by a special mixture of gases is _______.

The oldest known remains are of a boat that was likely built

collects layers of sediment from the ocean floor

As people explored the oceans and lands, they developed more accurate ___________.

Beebe and Barton constructed and crewed the Bathysphere

Water clarity can be measured at night using ____________.

A sounding will reveal the _______ of a body of water.

Autonomous undersea vehicles rely on ______ intelligence to guide them during their data collection missions.

A feature of an underwater habitat that allows direct access to and from the sea without decompression is called a ____.

If divers enter and exit an underwater habitat through a moon pool, which would describes the air pressure in it?

The best device for determining the shape of a seamount would be a __________.

Photocells are more accurate and more widely used than Secchu disks today.

Samples of small benthic organisms and uppermost sediments on the ocean bottom can be obtained with a(n) __________.

air-filled structure, lowered from a ship and from which divers could explore the ocean

Which of the following would an oceanographer likely NOT be employed to do?

The earliest known diving technology involved the use of ___________.

Which sampling device could best provide a history of sediment deposition at a given location in the ocean?

The use of lead lines to determine water depth was eventually replaced by _____________ technology.

Small pelagic organisms can be sampled from a moving ship using a(n) _________.

According to your textbook, what was a significant motivation for the Age of Exploration?

Which of the following types of data would best be collected by a wide-area sampling method?

The HMS Challenger expedition covered three oceans and lasted four years.

Modern underwater habitats are simple in design and easy to use.

Which of the following was the first vessel to descend into Challenger Deep, the deepest point known in the oceans?

Which of the following types of vessels can cover the most territory in a given amount of time?

Which of the following has been measured using satellite technology?

collects water at various depths

Oceanographers often face bad ______ as they work on the oceans

Nansen bottles were designed to take a seawater ____ and record the water _______ when the bottles flipped.

A greater amound of life is found in the earth's oceans than is found on land.

Nansen bottles collect more data more quickly than Niskin bottles do.

The greatest challenge to deep-sea diving is

allowed divers to carry their own air supply

Very little ocean exploration probably happened before the Age of Exploration.

The HMS Challenger expedition was the first-ever ocean voyage intended to study the ocean for _______ purposes.

The first manned submersible to reach the deepest point in the ocean was the US Navy bathyscaphe named ________.

measures water clarity

collects and transmits a variety of weather and sea data

UUVs were developed to balance the desire to explore the ocean with the need to protect humans from the hazards of it.

A bathyscaphe works on principles that are similar to those of a hot air balloon.