March 1 & 4

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# March 1 & 4 - PowerPoint PPT Presentation

March 1 & 4. Action: Earth pulls moon. - What is the reaction ? - What is stronger – action, reaction , or same? - What Law defends your answer?. Action: Earth pulls moon. What is stronger – action, reaction, or same?. Action(Earth pulls moon) Reaction (moon pulls Earth)

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## PowerPoint Slideshow about 'March 1 & 4' - hasana

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Action: Earth pulls moon. - What is the reaction? - What is stronger – action, reaction, or same? - What Law defends your answer?
Action: Earth pulls moon.What is stronger – action, reaction, or same?
• Action(Earth pulls moon)
• Reaction (moon pulls Earth)
• Same!
• 1st Law
• 2nd Law
• 3rd Law
• PHET Gravity and orbits
• Run the simulation and complete the Lab Activity Sheet.
• This is due in 30 MINUTES for a grade – you will (10 points based on completion)
• Then, we will have a graded, individual, 30 point POST LAB to assess this lab activity.
• It moved in a straight line, not a circle
• It moved in a circle, not a straight line
#2 What did Newton conclude about the force that pulls apples to the ground and the force that holds the moon orbit?
• They were different forces
• They were the same force
#3 If the moon falls, why doesn’t it get closer to Earth?
• It has a large tangential speed, so it falls around Earth and not into it
• It has a small tangential speed, so it falls around Earth and not into it
#4
• What is meant by tangential speed?
• Popcorn…
#5
• How did Newton check his hypothesis that there is an attractive force between Earth and moon?
• Popcorn…
#6
• What is required before a hypothesis can become a theory?
• Popcorn…
#6
• What is required before a hypothesis can become a theory?
• Popcorn…
#7 Since there is gravity between the planets and the sun, why don’t the planets crash into the sun?
• They have small tangential speeds, so they fall around sun and not into it
• They have large tangential speeds, so they fall around sun and not into it
• Increase
• Decrease
• Stay the same
How would these gravity forces change if the Earth was much closer to the Sun?
• Increase
• Decrease
• Stay the same
• Increase
• Decrease
• Stay the same
How would these gravity forces change if the Earth and Sun were moved farther apart?
• Increase
• Decrease
• Stay the same
Choose the picture of how the Earth would move if you “turned off” the gravity forces.
Changes to make to your post lab:
• Make sure #2 and 4 say massive
• Change the answer choices in #11 to “enjoyable” rather than “useful”
• When you are done… Place in in box upside down; RETURN CLICKER IN ORDER; silently BEGIN your HW