MB Midterm Ocean Dynamics and Ecosystems

In a water molecule, the hydrogen atoms are slightly

• positive

• negative

Water has a high heat capacity. What does this mean?

• It means that, with the addition of heat energy, water will boil once it reaches a temperature of 100°C

• It means that water will freeze, changing phase from a liquid to a solid, upon reaching a temperature of 0°C.

• It means that water is able to absorb a significant amount of heat without a drastic increase in temperature

• It means that water will rapidly increase in temperature with the addition of heat energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The ability of water molecules to "stick” together is known as

• cohesion

• adhesion

• capillary action

while the ability of water to "stick" to everything else is known as

• cohesion

• adhesion

Tags

NGSS.HS-ESS2-5

Why does ice float?

• water expands when it freezes, making ice less dense than water

• water compacts when it freezes, making ice more dense than water

• hydrogen bonds in water push the ice to the surface

• ice is afraid of water, and avoids it

What are the bonds called between a slightly positive hydrogen in a polar molecule and a negatively charged atom?

• Hydrogen Bonds

• Water Bonds

• Covalent Bonds

• Bail Bonds

A(n) ______ is a substance with a pH less than 7

• acid

• base

• neutral

Why do currents curve to the right in the Northern Hemisphere?

• riptides

• density

• salinity

• Coriolis effect

Tags

NGSS.MS-ESS2-6

What causes deep currents?

• differences in density

• weather

• wind

• Coriolis effect

What causes surface currents?

• wind

• temperature

• salinity

• density

Tags

NGSS.MS-ESS2-6