Dearborn Public Schools



Name________________________________________ #_________ Date_________________ Hour_______Center #3: Seasons on Earth(20 point formative assessment)Unit Essential Question: __________________________________________________________________Focus Question: Why do we have seasons on Earth?Task Objective: Students will identify the axial tilt as the reason for changing season on Earth and will come to better understand the other factors involved in seasonal changes.Part I Brain Pop: Have the group leader get the Chromebook assigned to them, and follow the directions below:1. You should only have one Chrome Book for the entire group; have the group leader login to the Chromebook and go to 2. Login to the BrainPop site with the following: Username: Stout1Password: falcon3. Type seasons in the search bar, and click on the box that says seasons when the search is complete.4. Watch the seasons movie.5. As a group, take the quiz. Record your score here: ___________________ __________ teacher-check-inPart II Seasonal Interactive: Every member of the group will need to go get their own Chrome Book.1. Go to the blog and click on the seasonal interactive link: . Scroll down until you get to the Revolution and Time of Year: The Seasons online interactive.3. Click on the Introduction tab and read it.4. Click on the How to tab and read it.5. Click on the Interactive tab and play around with the tools. 6. Complete the following exercises and answer the questions; you do not have to restate the questions! 7. Make sure the inclination angle is set to zero; how does the path of the Sun in the sky change as the planet moves from the right side of its orbit to its left?________________________________________________________________________________________________________________________________________________________________________________A. What is the longest duration, in hours, of sunlit time during the year? ________________________B. What is the shortest duration, in hours, of sunlit time during the year? ________________________C. How does the angle of sunlight striking the ground change? _________________________________________________________________________________________________________________D. What is the change in average temperature? ___________________________________________8. Modify the inclination angle to 23 degrees and watch for a complete revolution.A. What is the longest duration, in hours, now? ___________________________________________B. What is the shortest duration, in hours, now? __________________________________________C. How does the angle of sunlight striking the ground change? _________________________________________________________________________________________________________________D. What is the change in average temperature now? _______________________________________9. Modify the inclination angle to 60 degrees; watch the position of the Sun and the brightness of the sky over the landscape carefully.A. What is the longest duration, in hours, now? ___________________________________________B. What is the shortest duration, in hours, now? __________________________________________C. What is the change in average temperature now? _______________________________________10. Play around with the interactive and determine the smallest inclination angle which leads to a 24-hour period without sunlight:________________________________________________________________________________________11. The planet Uranus is tilted nearly on its side, so that its axis of rotation is only 8 degrees away from its orbital plane; Click on the Uranus button at the bottom of the interactive so that the tilt of the Earth matches that of Uranus. What do you observe?________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________A. If you lived at the 45 degree latitude line on Uranus, how long do you think one winter night lasts, in Earth years? ____________________________________________________________________________________________teacher check-in; return the Chrome Books to the cart.Part III Illustrated Dictionary: Define seasons, rotation, and revolution in your illustrated dictionary; put whatever you want in box three.****This must be turned in, done or not, either at the end of class or during bellwork the next day to be checked-in; remember you can always correct a check minus. ................
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