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Science Experiments

Science Experiments. Mrs. Harsma. By PresenterMedia.com. Agenda or Summary Layout. Lesson 7.1. A second line of text could go here. Experiment 1 Motion. Experiment 2 Force. Lesson 7.3. Experiment 3 Newton’s Laws of Motion. Lesson 7.5. Experiment 4 Apply Newton’s Laws. Lesson 7.6.

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Science Experiments

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  1. Science Experiments Mrs. Harsma By PresenterMedia.com

  2. Agenda or Summary Layout Lesson 7.1 A second line of text could go here Experiment 1 Motion Experiment 2 Force Lesson 7.3 Experiment 3 Newton’s Laws of Motion Lesson 7.5 Experiment 4 Apply Newton’s Laws Lesson 7.6 Experiment 5 Relative and Apparent Motion Lesson 7.7 Experiment 6 Review Lesson 7.8

  3. Rules for Completing Experiments Add a subtitle here Following all directions given by teacher Listen to all directions before moving to complete Clean up materials afterwards

  4. Lesson 7.1 Motion Materials Needed: Tennis Ball Coin String and Paper Clip Note Card Cup

  5. Lesson 7.1 Motion Sit on the floor across from your partner. Roll, throw, and bounce a tennis ball back and forth to each other. Observe the ball’s movement. Spin your coin and observe its movement. Tie a paper clip at the end of a string. Swing the string back and forth. Swing the string slowly in a circle. Observe the paper clips movement.

  6. Lesson 7.1 Motion A second line of text may go here. • Description of Motion • Examples of Other Objects • Description of Motion • Examples of Other Objects • Description of Motion • Examples of Other Objects

  7. Lesson 7.1 Motion A second line of text may go here. • Description of Motion • *It rolls straight; it flies straight but curves down; it bounces up and down. • Examples of Other Objects • *cars, skipping rocks on water, paper planes • Description of Motion • *It spins; it rolls; it goes around. • Examples of Other Objects • *a top, merry-go-round, a propeller • Description of Motion • *It swings back and forth; it swings around. • Examples of Other Objects • *a clock, a tetherball, a swing

  8. Lesson 7.1 Motion Discussion: What causes a tennis ball and coin to move straight? What causes them to spin? What causes a paper clip to swing? What changes the direction of its motion? What causes a moving objects to stop? Place a note card on top of a cup. Place a coin on the card. Quickly pull the card out from under the coin. What happens to the coin? Explain why you think the coin on the note card does not move the same way the note card does.

  9. Lesson 7.3 Force Materials Needed: Rope Paper Airplane Two Sheets of Paper Two Sheets of Paper

  10. Lesson 7.3 Force Stand facing your partner. Put the palms of your hands together and lean toward one another. What force does your partner exert on you? Have your partner sit down and hold out his or her hands. Joining your hands together, try pulling your partner across the floor. What force makes it difficult to pull someone across a surface?

  11. Lesson 7.3 Force Stand facing your partner. Put the palms of your hands together and lean toward one another. What force does your partner exert on you? Normal Force Have your partner sit down and hold out his or her hands. Joining your hands together, try pulling your partner across the floor. What force makes it difficult to pull someone across a surface? Friction

  12. Lesson 7.3 Force With your partner, pull on a rope until it is taut (tight). Identify which kind of force the rope has when it is taut. Throw a paper airplane. What force slows the plane and what other force brings it to the ground?

  13. Lesson 7.3 Force With your partner, pull on a rope until it is taut (tight). Identify which kind of force the rope has when it is taut. Tension Throw a paper airplane. What force slows the plane and what other force brings it to the ground? Friction and Gravity

  14. Lesson 7.3 Force Quickly rub two sheets of paper together for ten seconds. Lay them on top of each other on a desktop so that one end hangs over the edge of the desk. Grab a corner of the top sheet and lift it quickly. Describe what happens and identify the force involved.

  15. Lesson 7.3 Force Quickly rub two sheets of paper together for ten seconds. Lay them on top of each other on a desktop so that one end hangs over the edge of the desk. Grab a corner of the top sheet and lift it quickly. Describe what happens and identify the force involved. The bottom sheet is slightly lifted as the top sheet is lifted because of electrical force.

  16. Lesson 7.3 Force Crumple one sheet of paper. Take the crumpled paper and a sheet of flat paper and hold them out. Drop them both. Describe what happens and explain what forces are involved.

  17. Lesson 7.3 Force Crumple one sheet of paper. Take the crumpled paper and a sheet of flat paper and hold them out. Drop them both. Describe what happens and explain what forces are involved. The crumpled sheets falls much faster than the flat sheet. Gravity acts on them both, but friction is greater for the flat sheet.

  18. Lesson 7.3 Force

  19. Lesson 7.3 Force

  20. Lesson 7.5 Newton’s Laws of Motion Materials Needed: Empty Cardboard Box Books Pillows Start and Finish Lines Pencils or Pens Two film canisters Effervescent Tablet Water

  21. Lesson 7.5 Newton’s Laws of Motion 1. Push the empty carboard box, the box filled with books, and the box filled with pillows from Start to Finish. Compare your three pushes and describe them in terms of Newton’s Second Law of Motion.

  22. Lesson 7.5 Newton’s Laws of Motion Push the empty carboard box, the box filled with books, and the box filled with pillows from Start to Finish. Compare your three pushes and describe them in terms of Newton’s Second Law of Motion. The box with the books is hardest to push because it has the most mass and, therefore, the most inertia. It requires more force to make it speed up. The empty box is the easiest, and the box with pillows is in the middle.

  23. Lesson 7.5 Newton’s Laws of Motion 2. Explain why the boxes stop moving when you stop applying force. Friction makes them stop moving.

  24. Lesson 7.5 Newton’s Laws of Motion 3. Use pencils or pens to make the boxes easier to push across the floor. Describe how you did it and why it worked.

  25. Lesson 7.5 Newton’s Laws of Motion 3. Use pencils or pens to make the boxes easier to push across the floor. Describe how you did it and why it worked. Example: We put the pencils underneath the box and rolled it on top of them. It works because it reduces the friction that makes the box harder to move.

  26. Lesson 7.5 Newton’s Laws of Motion 4. Imagine that you are playing with a little brother or neighbor child. You are pulling the child in a wagon. When you get tired and sit down in the wagon, the child tries to pull you. He or she soon discovers that he or she cannot move the wagon nearly as fast as you can. Explain why he or she cannot.

  27. Lesson 7.5 Newton’s Laws of Motion 4. Imagine that you are playing with a little brother or neighbor child. You are pulling the child in a wagon. When you get tired and sit down in the wagon, the child tries to pull you. He or she soon discovers that he or she cannot move the wagon nearly as fast as you can. Explain why he or she cannot. Example: It is harder for a little child to pull me than for me to pull him because I have more mass. It takes more force to make me speed up than it takes to make him speed up. I am stronger than he is so I can make him speed up.

  28. Lesson 7.5 Newton’s Laws of Motion Secure the lid on one film canister and place it on the floor on its side. Fill the second canister half-full with water. Place half of an effervescent table in the water and secure the lid on the canister. Quickly place this canister on the floor next to the first canister so that the lids face each other. Stand back and watch what happens. Record your observations. Use Newton’s Third Law of Motion to explain what happened to the canisters.

  29. Lesson 7.5 Newton’s Laws of Motion Stand back and watch what happens. Record your observations. • Example: The lid on the film canister that has water pops off. This canister moves back slightly but the empty film canister moves a long way in the opposite direction. Use Newton’s Third Law of Motion to explain what happened to the canisters. • Examples: When enough gas was produced by the effervescent tablet in water, the lid was pushed off. The lid pushed on the empty canister making it move. At the same time, the empty canister pushed back on the half-full canister with a reacting force. The empty canister moved faster because it was lighter than the other canister.

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