 What pattern, shown in the map, explains why many ocean currents begin near the Equator? A Less evaporation here leads to saltier water. B Earth is rotating fastest at the lower latitudes. C Water farthest from the poles gets the hottest. D Cold water sinks near the coasts of the continents

 On back of worksheet answer the following questions:  Which direction do most of the currents in the northern hemisphere move? Clockwise  Which direction do most of the currents in the southern hemisphere move? counterclockwise  Where are most of the warm currents located on the map? equator  Where are most of the cooler currents located on the map? Poles OCEAN CURRENTS REFLECTION

Climate comparisons activity Bouvet Island  What current is Bouvet receiving water from, Benguela or Brazil? What temperature is it, warm or cold?  Label the current on your map using the colored pencil and arrow  Describe its climate- temperature(high and low), annual precipitation (use units), humidity- is it dry or humid  Amount of vegetation- is there very little or is it lush with a lot of vegetation? Clifden, Ireland  What current is Ireland receiving, Canary or North Atlantic Drift? What temperature is it, warm or cold?  Label the current on your map using the colored pencil and arrow  Describe its climate- high & low temperatures, annual precipitation (use units), humidity- is it dry or humid?  Amount of vegetation- is it barren with very little plant life or is it lush with a lot of vegetation?  When done work on questions. Call me over when ready to get pics of both areas.

Bouvet Island Clifden, Ireland CLIMATE COMPARISON  Very cold, very low precipitation, dry air, very little plant life  Cold Benguela Current causes it to be dry and cold  Moderate temperatures, high precipitation, lush and plentiful plant life  Warm North Atlantic Current causes it to be moist and humid with lots of rain

What causes deep ocean curren ts? Deep ocean currents are influenced by temperature and salinity differences. Warm water is less dense than cold water and water with more salt is denser than ocean water with less salt.

 Explain the movement you observed with cold blue water and red hot water in the test tube. Blue cold water sinks while the red hot water rises and moves along the top of the water. Circular motion occurred between the two colors after a few minutes.

 research how molecules move differently when heated up versus when cooled down Molecules tend to move slower when temperatures cool and become more compact and dense while hot water molecules tend to speed up and spread out more

 Explain the relationship between density and temperature.  The hotter an object becomes the less dense it is due to its molecules spreading out. Colder objects have less energy so it slows down and molecules become very compact and dense.

 why do you think the blue cold water and red water moved the way it did?  Cold water is denser while hot water is less dense. The cold water hovered at the bottom at first but then started to warm up so it became less dense since the molecules began to spread out causing it to rise. The hot water started to cool down so its molecules started to clump closer together causing it to become more dense and fall in the test tube.

If the water represents the ocean, how does the water in the ocean move?  Warmer, less dense water rises, and cooler, denser water sinks. Heat is distributed in the ocean and atmosphere by convection currents. This is all fueled by the Sun.

Does this model show energy distribution by radiation, conduction or convection? Energy transfer through a liquid Energy transfer through direct contact Transfer of energy through waves

8.10A The Sun’s Energy  to recognize that the Sun provides the energy that drives convection within the atmosphere and oceans, producing winds and ocean currents

So what’s the deal with the lava lamp?  Next to each number tell me what is going on that would explain the process of convection.

1.Electrical energy passes through cord 2. Light bulb radiating heat glass 3. Glass heats up transferring energy to wax and liquid (convection) 4. At it heats wax melts 5. Less dense wax material closest to the energy (light bulb) rises 6. As the wax gets away from the energy source (light bulb) it cools and becomes more dense so it sinks.