6th Grade CBA 2 - 18 Week Test Review Slides PDF

CBA 2 Test REview 6th Grade Slides Review from: Forces Test Let's Try It: Recognizing Balanced vs Unbalanced Forces Which scenario illustrates balanced forces? A. A dog pulling on a leash. B. A book resting on a shelf. C. A kite flying in the wind. D. A car speeding up. Which of the follow...

CBA 2 Test REview 6th Grade Slides Review from: Forces Test Let's Try It: Recognizing Balanced vs Unbalanced Forces Which scenario illustrates balanced forces? A. A dog pulling on a leash. B. A book resting on a shelf. C. A kite flying in the wind. D. A car speeding up. Which of the following is an example of unbalanced forces? A. A car accelerating. B. A book resting on a table. C. A lamp hanging still from the ceiling. D. A picture frame sitting on a shelf. Qu. 2 When forces act in opposite directions, you subtract the smaller force from the larger one. Net force is When forces the overall act in the force acting on an object same when all the direction, they individual add up. forces acting on it are When forces combined. act in opposite directions, you subtract the smaller force from the larger one. Fill in Notes How Forces Interact Newton's Third Law of Motion says that forces always come in pairs. These pairs are equal in strength but act in opposite directions. When you push on something, it pushes back on you with the same amount of force! For instance, if you jump off a boat into the water, you push the boat backwards as you move forward. You can apply this law in sports, like basketball - when you throw the ball, your hand applies a force to it, and the ball applies an equal and opposite force back to your hand. How Forces Interact Leila places a book on a table. According to Newton's Third Law, what force does the book apply to the table? A. No force B. A force equal to the book's weight C. A force greater than the book's weight D. A force less than the book's weight Finding the Force Pairs Kayla stands on a skateboard and pushes the ground backwards with her foot. What is the force that the ground applies back on Kayla? A. 0 pounds B. 5 pounds if Kayla pushes with 10 pounds C. 10 pounds if Kayla pushes with 5 pounds D. An equal force that Kayla applied to Every time two objects interact, they exert forces on each other that are equal in strength and opposite in direction. This means wheneveryou see one force, there is always another force that pairs with it. For example, when a book sits on a table, the book pushes down on the table, and the table pushes back up on the book with an equal force. SEE NEXT SLIDE FOR HELP ON QUESTION The Dynamics of Applied and Normal Forces Applied force is any force that is put on an object by a person or another object. ➔ When you push a door open, you use applied force. Normal force is the support exerted by a surface, perpendicular to an object resting on it. ➔ If you're standing on a floor, the normal force is what keeps you from falling through. You use applied Normal force is force whenever you what prevents push or pull you from sinking something, like into the floor opening a jar. when you stand. Let's Try It: The Dynamics of Applied and Normal Forces Emily pushes a toy car with a force of 5 pounds. What type of force is Emily using? 1.Applied Force 2.Normal Force  APPLIED NORMAL FORCE FORCE Applied force is when one Normal force is a type object pushes or pulls on of contact force that is another object. It happens exerted by a surface when you use your perpendicular to an muscles to push or pull an object in contact with Let's Try It Together: The Dynamics of Applied and Normal Forces Miguel is standing still on the ground. What force balances his weight? A. Applied Force B. Normal Force C. Magnetic Force D. Frictional Force  Turn and Talk: Match each example with the correct term: APPLIED NORMAL FORCE FORCE A pot sitting on a stove that exerts a force upward that is equal to the force the potNORMAL exerts downward FORCE A boy wiping off a table with a washcloth moving the washcloth at a constant APPLIED  Review from: Energy Transformations and Waves Let's Try It: Types of Energy Which type of energy is stored in a stretched rubber band? 1. Kinetic Energy 2. Chemical Potential Energy 3. Elastic Potential Let's Try It: Different Ways to Store Energy A battery stores energy in chemical bonds, Explain how a battery stores which is released as energy. electrical energy. If different batteries are tested, would the one that lasted the longest have more chemical YE potential energy? S! Energy Transfers Bumper cars, along with all collisions, are an example of an energy transfer. That’s because energy is moved from one object to another. When you collided with the The source object is stationary car, your transferred the object that your KE to it. That makes you the provides energy to the source object. energy transfer The other car was the receiver object. The receiver object is the object that gains energy from the energy transfer. Energy Transfers Based on the movement of our bumper cars, we know that energy is transferred from one car to another. What happened to the total energy of the system during this transfer? ( Was work done? Was energy conserved) If no work is done on the system to add or remove energy, then the total energy of the system remained the same. The energy of the system was conserved.  Longitudinal Waves What is the difference between a rarefaction and a compression? Rarefaction is the part of Compression is the part the wave where the of the wave where the particles are (closest / particles are (closest / farthest) apart. farthest) together. Where will there be more energy in the wave? compression or rarefraction Compressi Rarefracti