Gather data: Check that the time is 6:00 A. M. Drag the Weather probe so that it is on the ocean s surface (Alt. How does this fact explain the existence of land breezes and sea breezes? Name: Date: Student Exploration: Coastal Winds and Clouds Vocabulary: condensation, convection, convection current, land breeze, sea breeze Prior Knowledge Questions (Do these BEFORE using the Gizmo. ) This pattern in which low-density, hot air rises while high-density, cold air sinks is an example of convection. Gizmo Warm-up Have you ever taken a walk along an ocean beach and noticed a refreshing breeze blowing in from the water? Think about it: Imagine a pocket of air over the land ( land air), and another pocket of air over the ocean ( ocean air). Click Play (), and watch the Gizmo for 24 simulated hours, focusing on the sailboat. The resulting circular flow of air is called a convection current.
At what time of day is the sea breeze strongest? Activity B: Convection currents Get the Gizmo ready: Click Reset. 0 ft) on the left side of the Gizmo, and record the air temperature. Describe what you see in the space below. B. Click Play, and then pause the simulation when the land breeze is strongest. What might happen if the burner was turned off? A hot-air balloon contains a propane burner that directs hot air into the interior of the balloon. The Coastal Winds and Clouds Gizmo allows you to explore how daily temperature variations are related to sea breezes and other weather phenomena. Which points represent the lowest and highest temperatures on the diagram?
Other sets by this creator. Analyze: Compare the air temperatures to the breezes. Gather data: The diagram at right shows the scene at 6:00 A. Click Play, and then click Pause when the sailboat starts moving out to sea again. How much does the temperature over the land change in one day?
Draw conclusions: In general, the land changes temperature much more rapidly than the ocean. Write these steps in the correct sequence and, for each step, explain why it is placed in that order. What time is it now? The following is a scrambled list of the techniques used in making recombinant DNA. Finally, move the probe to the land-sea boundary and record the type of breeze (sea or land breeze) and wind speed. Question: How is wind speed and direction related to air temperature? What are these temperatures at this time?
Then, repeat with the probe on the land on the right side of the Gizmo. Which air pocket would you expect to cool down more at night? During what time period does the balloon drift in a counterclockwise direction? 12:00 P. 3:00 P. 6:00 P. 9:00 P. 12:00 A. Record data for each time listed in the table below. Activity B (continued from previous page) 5. Explain: Clouds often form when a large mass of warm, moist air rises quickly and cools, resulting in condensation of the water vapor. Time Ocean air temperature ( C) Land air temperature ( C) Sea breeze or land breeze?
Activity B continued on next page). Click Pause () when the sailboat starts moving towards the shore. Use the Weather probe to find and label the temperature at each of the numbered locations. This represents the start of the land breeze. You can see the flames in the photo at left. Activity A: Temperature and wind Get the Gizmo ready: Click Reset (). What is always true when there is a sea breeze? What happens when the air inside the balloon is heated? Which air pocket would you expect to heat up more during the day?
Pause the simulation whenever the balloon changes direction. Observe: Place the Weather probe at the land-sea boundary, and click Pause when the sea breeze is strongest. E. The wind changes direction at approximately 9:10 A. and 12:10 A. C. Click Play, and then click Pause when the strength of the land breeze is at a maximum. Question: Why do land breezes and sea breezes occur? Calculate: For both the ocean air temperature column and land air temperature column, find the temperature range by subtracting the lowest temperature from the highest. Explain: What causes the counterclockwise flow of air in the afternoon? Wind speed (km/h) 6:00 A.
Click Play, and now observe the clouds for a day. In which direction is the coldest air in the diagram moving? Based on this statement, why do clouds tend to form around 3:00 P. and 6:00 A. M.? What do you notice in the sky now? Gather data: Click Play, and then click Pause at 3:00 P. Find the wind direction between the points as you did before. Extend your thinking: With the probe placed on the land-sea boundary, monitor the wind speed. Cut open plasmid with restriction enzyme Obtain synthesized protein from the bacteria Clone bacterial cells with rDNA plasmids Insert donor DNA into the open plasmid Cut out donor DNA with restriction enzyme Add ligase to bond donor DNA and plasmid. Observe: Click Play, and observe the balloon for a period of 48 hours. Turn on the Weather probe. D. M., in which direction did the breeze blow? C. At 3:00 P. M., where was the warmest air? D. What are the land- and ocean-air temperatures now? Next, find the wind direction between the points on the diagram.
Turn on the Drifting balloon. The cause of this breeze, called a sea breeze, is related to the reason that a hot-air balloon is able to fly high in the sky. What is true about each of these times?