Marine Science Practice for 2024 Midterm

The ancient seafarers used the ocean primarily for

• Shipping and trading

• Scientific exploration

• Underwater research

• Recreational travel

Of the following, the earliest device for breathing underwater was the

• Scuba tank

• Jimsuit

• Diving chamber

• Diving suit

An example of positive buoyancy would be

• A rock sinking to the bottom

• A fish swimming in the water

• A pneumatocyst on seaweed

• A shark's oily liver

A pencil will float in water because its _____________ is _____________ than the water.

• Density, less

• Density, greater

• Volume, less

• Volume, greater

__________________ pushes up against the force of __________________.

• Density, gravity

• Gravity, buoyancy

• Buoyancy, gravity

• Buoyancy, density

Cellsthat DO have a true nucleus and membrane bound organelles are said to be

• Prokaryotic

• Eukaryotic

The BENDS in scuba divers can be treated with

• Hyperbaric Chamber

• Oxygen tank on the boat

• Going back down to the pressure you were at and waiting

• Tilting the other way

The Titanic is disintegrating at a quick rate because of high levels of _____ in the surrounding water.

• Bacteria

• Chemicals

• Saltwater

• Phytoplankton

Diatoms are examples of

• Plants

• Fungi

• Plankton

• None of the above

Archimide’s principle states that

• The buoyant force is subtracted from the force of the displaced water

• The buoyant force is equal to the force of the displaced water

• The displaced water is always randomly distributed depending on gravity

• None of the above