Weather Ocean Heat Transfer

Which of the following has the greatest density?

• warm water
• cold water 
• cold salty water
• warm salty water

What is the original energy source for ocean currents?

• tides
• Sun
• Moon
• gravity

What are the two things that drive deep ocean currents?

• temperature and salinity
• Sun and gravity
• Moon and tides
• answer not shown

What kind of currents are caused by the wind?

• Thermohaline currents
• Thermocline currents
• Deep ocean currents
• Surface currents

Which observation describes a change in climate rather than a change in weather?

• The thunderstorm dropped about three centimeters of rain today.
• The average summer temperatures have increased over the last ten years.
• The snowfall in this area was more this week than it was last week.

What is the Earth’s largest ecosystem?

• temperate forest
• ocean
• alpine tundra
• rainforest

How can the effects of runoff be observed in ocean systems?

• Amount of carbon dioxide found in the ocean system
• Number of bankrupt fisheries from overharvesting of marine life
• Number of people living in coastal areas
• Abnormal algae blooms and number of dead fish in the ocean

What kind of front has arrows that point in opposite directions?

• Cold front
• Warm front
• Stationary front
• Occluded front

Ocean currents like the gulf stream  affect world climate by______

• spreading plant and animal life over a wider area.
• ensuring ocean density is not the same globally.
• carrying sediment from rivers and inland basins.
• transferring heat to and from various regions.

Which of the following is the most likely disadvantage of using chemical fertilizers?

• Runoff containing fertilizer may contaminate nearby surface water.
• Increased agricultural crops may promote insect overpopulation.
• Improved crop output may cause excess carbon dioxide production.