Marine Bio Chapter 2 Exam Review

What does SCUBA stand for?

• self-contained underwater breathing apparatus

• super-contaminated underwear brown apple

• sub-contract underwater breathing apparatus

• self-contained underwater breathing appendage

Answer explanation

SCUBA stands for 'self-contained underwater breathing apparatus', which is the correct term for the equipment used by divers to breathe underwater. The other options are incorrect and do not represent the acronym.

What was the main reason for the major increase in ocean exploration in the 1940s?

• WW I

• WW II

• WW 84

• To find mermaids

Answer explanation

The major increase in ocean exploration in the 1940s was primarily due to World War II. The war necessitated advancements in naval technology and underwater research, leading to significant exploration efforts.

The underwater current discovered by Ben Franklin is known as the _______?

• Aquaphore

• Bayside

• Rip tide

• Gulf stream

Answer explanation

The underwater current discovered by Ben Franklin is known as the Gulf Stream. It is a major ocean current that influences climate and weather patterns, making it the correct answer among the options provided.

The oldest existing ocean is the _________.

• Pacific

• Atlantic

• Indian

• Arctic

Answer explanation

The Pacific Ocean is the oldest existing ocean, formed over 200 million years ago. It is larger and deeper than the Atlantic, Indian, and Arctic Oceans, making it the most ancient of the world's oceans.

Who is credited with being the first person to travel around the world?

• Vasco da Gama

• Ferdinand Magellan

• Jaques Piccard

• Jaques Ceusteau

Answer explanation

Ferdinand Magellan is credited with being the first person to circumnavigate the globe. His expedition, which began in 1519, successfully completed the journey, although he did not survive to see its completion.

The ______ completed the first great oceanographic expedition from which all modern oceanographic expeditions are based.

• Challenger

• Challenger Deep

• Albatross

• Beagle

Answer explanation

The correct answer is 'Challenger' as it refers to the HMS Challenger, which conducted the first major oceanographic expedition from 1872 to 1876, laying the foundation for modern oceanography.

Modern SCUBA uses a weighted suit for walking on the ocean floor?

• True

• False

Answer explanation

The statement is false because modern SCUBA gear typically uses buoyancy control devices, not weighted suits, to help divers manage their buoyancy while underwater.

Original SCUBA uses a flippers for swimming along the water column?

• True

• False

Answer explanation

The statement is false because original SCUBA gear uses a tank for breathing underwater, not flippers. Flippers are used for propulsion, but they are not a defining feature of SCUBA equipment.

Which ocean is the Mariana Trench in?

• Indian

• Pacific

• Atlantic

• Southern

Answer explanation

The Mariana Trench is located in the Pacific Ocean, making it the deepest part of the world's oceans. The other options, Indian, Atlantic, and Southern, do not contain the trench.

What is the oldest ocean in the world?

• Pacific

• Indian

• Atlantic

• Southern

Answer explanation

The Pacific Ocean is the oldest ocean, formed over 200 million years ago during the Mesozoic era. It predates the Atlantic and Indian Oceans, making it the largest and oldest ocean on Earth.