Land and Sea Breezes Good Day Fill in your agenda. Put your homework in the basket. Journal Land and Sea breezes. Content Purpose: Describe a land breeze, include why it occurs. Describe a sea breeze, include why it occurs. Explain the differences between the two. Draw a label a diagram of each. Language Purpose: Use temperature and air pressure when describing land and sea breezes. Accountable Team Task: Work with tablemates to construct a working diagram that will help you accomplish the content purpose.

Land and Sea Breeze Lab Today you and your tablemates will conduct a comparative experiment to determine how sunlight effects the temperature of land and sea. You will also follow directions to create labeled/colored diagrams of land and sea breezes. Purpose: Does sunlight effect the temperature of land and sea differently? Head your paper: Land and Sea Breeze Lab and Activity Copy the purpose. Identify the variables. Write a hypothesis (If…then… because…) Create a data table.

The effect of sunlight on the temperature of land and sea Initial 5 min 10 min 15 min 20 min 25 min 30 min Land Sea

Land and Sea Breeze Lab Materials: a container of water; a container of sand; two temperature probes connected to TI cradle and Handheld; a heat lamp clamped to the tables edge; clothes pins Use the clothes pins to attach a temperature probe to the side of each container so that your temperature probe is in the center of the water/sand and not touching the sides of the container. Record the initial temperature of water and the sand in your data table. Put your containers under the heat lamp. Record the temperature of the water and sand after 5 minutes. Record the temperature of the water and sand after 10 minutes. Record the temperature of the water and sand after 15 minutes. Turn off the heat lamp and move the containers away from the lamp. Repeat steps 4-7. Create a line graph showing your data. (Hint you should have one graph with two labeled lines.) Work on the following drawing activity during the “wait” time of this lab.

Land and Sea Breeze Drawing Activity Land and Sea Breeze Drawing Activity. Follow the directions to create a labeled diagram for a land and sea breeze. Fold a plain white sheet of paper in four. Trace over your folds. Turn your paper so that it is in a landscape orientation. You will draw your pictures in the left hand boxes and write your descriptions in the right hand boxes. In each of the left hand boxes add land and sea. In the top left box, add a sun and in the bottom left box, add a moon. Add radiation lines to each picture over the land or sea where the air is warmest. (Hint: Land heats and cools faster than water.) Add a “L” for low pressure air and a “H” for high pressure air to each picture. (Hint: Temperature affects air pressure. Cool air molecules are closer together, therefore exert more pressure. Hot air molecules are further apart, therefor exert less pressure.) Nature likes to be balanced. High pressured air will always move towards low pressured air. Add arrows to both pictures indicating this movement of air. This movement also moves the low pressured air replacing it. Add one large convection current to each picture to show the movement of the air over the land and sea. Title and Color your pictures. In the right hand boxes, put the following statements with the matching diagram and in the correct sequential order. Each picture will have 6 steps.

Land cools faster at night. Creating a breeze from land to sea. A low pressure area is created. The water is warmer than the land. Cooler denser air pushes the warmer less dense air out of the way. Land heats up faster during the day. The air over the water is warmer than over the land. The air over the land is warmer than over the sea. The water is cooler than the land. Creating a breeze from sea to land. 6. Lab Conclusion: Write a conclusion paragraph (answer question, hypothesis statement with data support.) 7. Time to Think: When, where, and what conditions would be necessary for a sea breeze to blow at night?

Your drawings should look similar to this… Yours will be labeled and colored.