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Gravity & Gravitational Forces

Space Science<br>Middle school 6th 7th 8th grade

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Gravity & Gravitational Forces

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  1. Week 5 ADay May 10-11

  2. Google Meet Signals Thumbs up = OK/Yes Thumbs down = No Raised hand = Question ? in chat = Question ! in chat = Comment

  3. Gravitational Forces I can: Describe the interaction of gravitational forces between objects. https://www.youtube.com/watch?v=LWGJA9i18Co

  4. Gravitational Forces in Space MS-ESS1-2: Develop and use a model to describe the role of gravity in the motions within galaxies and the solar system. I Can: Describe the interaction of gravitational forces between objects. STEM Value: Passionate about play

  5. Warm - up Why does the Moon orbit the Earth and the Earth orbit the Sun?

  6. Felix Baumgartner 120,000 ft. https://www.youtube.com/watch?v=E9oKEJ1pXPw

  7. Vocabulary Gravity Push/Pull Mass Weight

  8. Gravity Gravity is an invisible force of attraction that pulls together all matter.

  9. Push vs Pull Push and pull - Both are movements (using force), the difference is in the direction at which the force is applied . If an action is applied to something being moved away from you it is a PUSH. If an action is applied to something being drawn towards you it is a PULL.

  10. Mass vs Weight

  11. Mass Which object do you think has the most mass? The actual amount of matter (stuff) that an object is made of!

  12. Weight The measurement of gravitational force that is PULLING on an object.

  13. Gravity - TedTalks How to think about Gravity https://ed.ted.com/lessons/jon-bergmann-how-to-think-about-gravity Are we attracted to the Earth, or is Earth attracted to us? Why? In the Chat: #Earth #Humans #Both

  14. OPEN ClassLinks OPEN StemScopes Then click on link in Chat. Take 5 minutes to explore the simulation -Select your space objects -Select “Path” -Adjust star and planet mass -Hit play and watch what happens! Do you notice any trends?

  15. Graded Assignment - Google Form

  16. Small Groups ADay: Reteach Quiet Room Activity

  17. Google Form Exit Ticket https://forms.gle/LWdAyvjmMXnoQu8w8

  18. Week 5 BDay May 13-14

  19. Google Meet Signals Thumbs up = OK/Yes Thumbs down = No Raised hand = Question ? in chat = Question ! in chat = Comment

  20. Gravitational Forces Do not try this at home. I can: Describe the interaction of gravitational forces between objects.

  21. Seasons

  22. Use the diagram below: Identify the POSITION of America during summer. 1 2 3 4 1 4 2 3

  23. Use the diagram below: Identify the POSITION of America during summer. 1 2 3 4 1 4 2 3

  24. Use the diagram below: Identify the POSITION of America during summer. 1 2 3 4 1 4 2 3

  25. Warm up Which planet has the most gravity? Why???

  26. Which falls faster? Why? https://www.bbc.co.uk/teach/terrific-scientific/KS2/zd9r2sg#:~:text=Because%20the%20Apollo%20crew%20were,same%20rate%20regardless%20of%20mass.

  27. Aristotle In the 342 BC (over 2300 years ago), the Greek philosopher Aristotle thought that heavier, more massive objects fell more quickly. Aristotle believed that heavy objects fell not because they were attracted to the Earth by an external force of gravity, but because of their ‘inner heaviness’ (mass) which caused them to move downward toward the centre of the Earth. Equally, light objects, he thought, moved by their ‘inner lightness’ (mass) upward. Because of this, he thought that the heavier or more massive an object, the faster it would fall.

  28. Galileo People believed Aristotle for about 1900 years until, in 1592, Italian scientist Galileo is said to have dropped two spheres of different masses, one heavier than the other, from the Tower of Pisa to demonstrate that the time they took to fall had nothing to do with their mass, or how heavy they were. By doing this experiment, Galileo discovered that the objects fell with the same acceleration, hitting the ground at the same time. This proved his prediction true, and at the same time disproved Aristotle's earlier theory.

  29. Sir Issac Newton Isaac Newton was born in 1643 and became famous for his work on gravity and his three laws of motion; he “discovered” GRAVITY as we know it today. The legend is, in 1687, Newton discovered gravity when he saw a falling apple while thinking about the forces of nature. Whatever really happened, Newton realized that some force must be acting on the apples because otherwise they would not start moving from being at rest attached to the tree branches.

  30. Mass and Gravity Nearpod Nearpod Link

  31. Matching Activity

  32. Which object will weigh MORE on Earth? https://forms.gle/GpYRTUJubeYBiHkVA

  33. Small GroupsBDay Legends of Learning Gravity and the Birth of our Solar System https://app.legendsoflearning.com/join/YXNzaWdubWVudC01ODU4MDA=

  34. Journal Write with Diagram: Small Group? Part A: Using arrows, draw a picture showing the force of gravity between a human and the Earth. Part B: Explain the interaction of gravitational forces between objects. Refer to your diagram to support your explanation. Timeline of Gravity - Aristotle to today

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