Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download When Air Masses Meet Lab
Document related concepts
no text concepts found
Transcript
Name__________________________________________Date_______ ! ! ! ! ! When Air Masses Meet! Introduction:! ! What causes wind to blow? Mostly, it has to do with the uneven heating of the Earth. Breezes occur because land and water heat and cool at different rates. This means this creates an unequal balance of air pressure above land and water.! ! ! When the sun’s energy heats the earth, the temperature of the air above the Earth’s Surface changes. Air, warmed by the surface below it, starts to rise, and cool air moves in to take its place. This circulation of air causes changes in weather, including the formation of winds.! ! ! In this lesson, you will connect two Convection Tubes used previously in other labs. We observe what happens when masses of air with the same temperature and humidity meet? What happens when air masses of different temperature and humidity meet?! ! Problem: In the space below write down what we are investigating in today’s lab.! ! ____________________________________________________________________________! ! Materials! 2 Convection Tubes! 1 120 mL plastic container of hot water! 1 120 mL plastic container of crushed ice! 1 piece of plastic tubing! 2 candles! A lighter! 1 punk stick! 1 flashlight! 1 small aluminum pan! ! ! Procedures! 1. Gather Materials! 2. Write your predictions for each of the different atmosphere conditions.! 3. Place a cup of warm water under each end of the convection tubes.! 4. Light a punk stick and put the smoke in top of one end of the convection tubes. ! 5. Use the flashlight to observe how the air moves. Write down your observations in the data table.! 6. You will have 3 minutes for each atmospheric condition, spend about a minute and a half making observations and the other minute and a half writing your observations down.! 7. Repeat steps 3 - 6, using the different atmospheric conditions. ! ! ! ! ! ! ! ! Name__________________________________________Date_______ Setup of Prediction (How will the air Convection move in the tubes?) Tubes Warm water and Warm water ! Cold Air (Ice) and Cold Air (Ice) Cold Air (Ice) and Warm Water Hot air (Candle) and Cold Air (Ice) Hot Air (Candle) and Warm Water ! ! Observations: ( How did the air move in the tubes? Place the punk over the colder tube and note any differences in movement.) ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Name__________________________________________Date_______ Analysis! Answer the following questions in complete sentences. Answers not in complete sentences will receive a 1 point deduction. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 1. What did you observe when both tubes contained air with the same temperature and humidity conditions? Why do you think this happened? (3 points) 2. What did you observe when the tubes contained air with different temperature and humidity? Why do you think this happened? (3 points) 3. On the basis of your results from the lesson, under what conditions do you think winds and rotating storms might form? (2 points) 4. Describe what you observed when the atmospheric conditions were cold meets hot. Use the following terms; high pressure, low pressure, high density, low density, rise, and sink. (6 points) Name__________________________________________Date_______ ! 5. After examining the following diagrams explain why there is uneven heating of the earth surfaces. Then describe how the uneven heating of the earth surfaces is responsible for sea breezes and land breezes. Think back to how soil and water heat and cool differently. ! ! ! ! ! !
