Chemical and Physical Characteristics of the Ocean

What wavelength of light travels the farthest in clear water?

• green

• blue

• red

• white

What wavelength of light travels the farthest in water with suspended material in it (sediment and organic matter)?

• green

• blue

• red

• white

How many feet of water depth adds another atmosphere of pressure (14.7 psi)?

• 3.3 feet (1 meter)

• 33 feet (10 meters)

• 330 feet (100 meters)

Water increases in density by:

• getting colder

• getting saltier

• both answers are correct

What happens to surface water when it gets denser?

• It floats more

• It sinks

• It evaporates

What temperature of water do gases dissolve into best?

• warm water

• cold water

• salty water

What is a limitation of satellites monitoring the ocean?

• They can cover huge areas

• They circle the planet 24/7

• They can only take measurements at the surface

What happens to gases when pressure is decreased?

• They compress

• They expand

At what temperature does salt water freeze?

• 32 degrees F

• 30 degrees F

• 28 degrees F

Water molecules dissolve salt compounds by:

• Surrounding the individual ions keeping them from being attracted to each other

• Breaking the covalent bonds between the ions

• Depolarizing the charges on the individual ions