Earth's Ocean
True of false. The earliest forms of life on earth were heterotrophic.
What is false. Photosynthetic. Used sunlight for energy, appeared later around 2.5-3 billion years ago.
True or False. Temperature, salinity, and density are factors that form deep currents.
What is true. As density increases so does salinity.
True or False. La Nino is the change in wind patterns on the earth that causes an increase in ocean temperature.
True or False. Salinity of ocean water is only determined by the temperature of the water.
What is false. Also by the gas content. top of the ocean has more oxygen and carbon dioxide.
______is obtained by setting up a turbine in an inlet.
What is tide energy. a machine that spins when something moves past it—like water, wind, or steam—and that spinning motion is used to generate electricity
What is a major property of ocean water?
What is salinity.
A stream-like movement of ocean water far below the ocean surface is a _______
What is a deep current.
True or False. Currents cause warmer and cooler temperatures in the areas where they are located.
What is True.
In deeper ocean water temperature decreases and ________ increases.
What is pressure.
What record did the Nereus break in May 2009?
What is it dove further down than ever before-6.8 miles.
What process increases the salinity of ocean water?
What is evaporation.
Temperature, salinity and density are factors that form what?
What is deep currents.
Ocean currents flow from east to west near the____
What is the equator.
What is the density increases.
Which of the following is most negatively affected by fishing practices. a. deep sea corals b. ocean microbes c. methane hydrates d. autonomous underwater explorers.
What is deep sea corals. Net is dragged across floor (break, crush, uproot).
What area in the ocean is likely to have the lowest salinity?
What is a bay at the mouth of a big river-landlocked and no water movement.
What are surface currents.
It is important for scientists to learn as much as possible about El Nino because the weather pattern is______
What is it has so many effects on organisms and land.
In which zone is ocean temperature most affected by the weather?
What is the surface zone.
The U.S. Joint Global Ocean Flux study was aimed at understanding what?
What is the ocean carbon cycle.
What ocean lies between North America, South America, Europe, and Africa?
What is the Atlantic Ocean.
What causes water from deep currents to rise to the surface to replace warm currents?
What is increased salinity due to evaporation.
Name one effect caused by El Nino and one effect that is NOT caused by El Nino.
What are mudslides, hurricanes and droughts and what are earthquakes.
Why is there more oxygen and carbon dioxide near the surface of the ocean than near the ocean floor?
What is the exchange of these gases between water and the atmosphere occurs more readily at the surface.
What are oil, minerals, and natural gas.