Oct 26 27 welcome assignment
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Oct. 26 & 27 Welcome Assignment PowerPoint PPT Presentation


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Oct. 26 & 27 Welcome Assignment. Extra Credit Word Search and Sudoku will not be accepted. The assignment is closed. Please take out your take home test and pass it forward. Take out a sheet of paper Write name, period, and date

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Oct. 26 & 27 Welcome Assignment

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Oct 26 27 welcome assignment

Oct. 26 & 27Welcome Assignment

Extra Credit Word Search and Sudoku will not be accepted. The assignment is closed.

Please take out your take home test and pass it forward.

Take out a sheet of paper

Write name, period, and date

Title: Convection Currents/Density and our Ocean – Lab Activity


Convection current density in our ocean lab activity

Convection Current/Density in our Ocean Lab Activity

  • Research Question/Purpose: How do convection and density affect our ocean waters? How does the salinity of the water affect the current?

  • Background information:

    • Convection = transfer of heat by a fluid (liquid or gas)

    • Density = the amount of matter in a given space. mass/volume


Materials

Materials

  • 8 ice cubes (2 each trial)

  • Fresh warm water

  • Beaker tongs

  • A ruler

  • Thermometer

  • 250ml beaker

  • Salt (about 70 grams)

  • Spoon

  • Paper towels

  • Timer


Procedure

Procedure

  • Obtain an ice cube that has been strongly dyed with food coloring

  • Using the beaker tongs, gently place the ice cube in a beaker ¾ full of warm, fresh water. Keep the beaker and water as still as possible.

  • Observe the ice – water mixture for 5 minutes. Write a detailed description of your observations

  • Measure the temperature at the surface, at the bottom of the mixture, and 3 measured levels in between.


Procedures continued

Procedures continued…

  • Empty the beaker and fill it to the same level with warm water.

  • Add salt to the water, stirring vigorously as you pour until no more salt will dissolve (saturated solution)

  • Repeat steps 3 and 4 using salt water in place of fresh water (do 2 trials of fresh water and 2 trails of salt water, first set for observations, second for temperature)


Data observations

Data/Observations


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