Grade Level/Unit Number: 7th grade/Unit 3 II: Unit Title: Weather & Atmosphere
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Scenarios:1. A pot sitting on a hot burner. (conduction) 2. How the inside of a greenhouse works. (convection) 3. Touching a metal spoon that is sitting in a pot of boiling water. (conduction) 4. Using a heating blanket to get warm. (conduction) 5. A person placing their cold hands over a warm fire. (radiation) 6. A person placing their hand over a hot burner. (radiation) 7. Lying out in the sun to get a tan. Or… Lying in a tanning bed. (radiation) 8. Putting your wet shoes on a floor vent to dry them faster. (convection) 9. A pot of water being heated on a hot burner. The focus is on the water. (convection) 10. Picking up a hot cup of coffee. (conduction) 11. Macaroni rising and falling in a pot of boiling water. (convection) The following is a simulation of conduction, convection and radiation, which you might like to show your students. http://www.wisc-online.com/objects/index_tj.asp?objID=SCE304 F  or homework, allow students to make a 3-tab foldable illustrating what they have learned about energy transfer. On the outside of the tab, write each energy transfer. Under each tab include a 3-sentence description and a diagram reinforcing the concept. Make the tab by cutting on the dotted lines. The word energy transfer hangs down to show the title. The name should go on the back.
Evaluate:Pass out the homework assignment sheet. It gives 8 options to check students’ understanding of the content. Allow students to pick one option, 2 or 3 times per week (or per unit) to summarize what they have learned that day. You may even decide to give them a certain topic or several to choose from each day. Students can keep the same homework handout to choose from each day, so additional handouts will not be necessary (attachment 8). Suggested topics for the homework writing topics: ultraviolet radiation ozone layers of the atmosphere sun safety energy transfer conduction convection radiation altitude air pressure Day 7Extension:Students can create a circle graph illustrating the percent composition of exhaled air. It shows a direct link to the air that makes up the atmosphere even though the percentages are slightly different. This exercise integrates knowledge from the respiratory system in the human body unit. This will give math integration and practice with using a protractor. A grading rubric is included on the handout (attachment 9) The components of exhaled air are: 74.5% nitrogen 6.2% water vapor 3.6% carbon dioxide 15.7% oxygen
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