Solar Radiation, Albedo, and Light Transmission in Seawater Objectives: To examine how the sun’s energy affects the ocean environment.

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Presentation transcript:

Solar Radiation, Albedo, and Light Transmission in Seawater Objectives: To examine how the sun’s energy affects the ocean environment

The Earth’s revolution around the sun

Equinoxes and solstices

Exercise #1 – Solar Constant Set the equator to the same height as your light by using the meter stick Set the equator to the same height as your light by using the meter stick Measure using the Lux Meter Measure using the Lux Meter –Lux meters have different settings (x1, x10, x100) –Hold it flat to the globe for all readings

Sun’s rays and surface area

Exercise #2 – Latitude Latitude lines are parallel to the equator. Latitude lines are parallel to the equator. Keep Lux meter flat to the globe. Keep Lux meter flat to the globe. When answering your questions, be sure to move the globe and take new measurements. When answering your questions, be sure to move the globe and take new measurements.

Execise 3# - Albedo The incoming radiation will be the same for every sample. The incoming radiation will be the same for every sample. Do not move or change the set-up without asking the TA, only change out the sample trays. Do not move or change the set-up without asking the TA, only change out the sample trays. Ask the TA for an Ice sample to measure. Ice doesn’t have a dark sand bottom. Ask the TA for an Ice sample to measure. Ice doesn’t have a dark sand bottom. Best to answer question in the way it SHOULD be, not the way your results suggest. Best to answer question in the way it SHOULD be, not the way your results suggest.

Exercise #4 – Visible light in Water Be sure that the light is in the middle depth of water. Be sure that the light is in the middle depth of water. Different ways to measure it? Different ways to measure it? Red should have lowest transmission Red should have lowest transmission Best to answer question in the way it SHOULD be, not the way your results suggest. Best to answer question in the way it SHOULD be, not the way your results suggest.

Exercise #5&6– Settling of particles Start with 2.4 gms. powdered silica Start with 2.4 gms. powdered silica Be sure to add an additional 1.2 g each time. Be sure to add an additional 1.2 g each time. You must put your own scale into the forms. You must put your own scale into the forms. Stir thoroughly when required. Stir thoroughly when required.