Physics Conservation of Energy The Chain Reaction Recycling Machine – – Work Stations Pinning It! Ramp Race Students construct two ramps; both start from the same height and end rolling flat on the ground or table. Students rotate around the Students try to drive a stations writing pin into a wooden block by Students marbles “race” observations and dropping a ping-pong ball and down the ramps and figure Student explanations of how each a golf ball on the pin. out how to determine the Experience station relates to work and velocity of the marbles at the what they think the Students identify the factors bottoms of ramps. components of work are. that go into potential energy. Students compare final velocities and try to interpret why they are relatively the same. Teacher’s choice: block of For each group: 1 golf ball, 1 For each group: 4 blinds, two T4T Material wood, string, cart, ramp, ping-pong ball, 1 push pin, 1 4-inch tubes, two 10-inch weight, pulley, heavy object wooden block. tubes. Marbles may take different If work is to be done, a force PE = mgh amounts of time to reach the is needed. If an object is = W bottom but their final ∆PE forced to move, it takes It takes work to lift an object. velocities are relatively the more work to move it Once it is lifted it has potential same. Big Idea further. energy. That potential energy can be used to do work. Conservation of Energy W = F∆x = ∆PE ∆KE Connection to By placing objects in strategic Work is a central concept Mechanical energy is Culminating positions, they can store for the culminating activity. conserved Activity potential energy for later use. CA Standards IE1. d PH2. b and c; IE1. d, j PH2. c; IE1. b, c, j HS-PS3-2 HS-PS3-1 HS-PS3-2 Asking questions and defining Asking questions and Asking questions and defining problems. Next Gen Sci defining problems. problems. Analyzing and interpreting Standards Constructing explanations Constructing explanations and data. and designing solutions. designing solutions. Constructing explanations and designing solutions.
Physics – Conservation of Energy – The Chain Reaction Recycling Machine Work Stations Pinning It! Ramp Race Student Experience Students rotate around the stations writing observations and explanations of how each station relates to work and what they think the components of work are. Students try to drive a into a wooden block by dropping a ping-pong ball and a golf ball on the pin. Students identify the factors that go into potential energy. Students construct two ramps; both start from the same height and end rolling flat on the ground or table. Students “race” marbles down the ramps and figure out how to determine the velocity of the marbles at the bottoms of ramps. Students compare final velocities and try to interpret why they are relatively the same. T4T Material Teacher’s choice: block of wood, string, cart, ramp, weight, pulley, heavy object For each group: 1 golf ball, 1 ping-pong ball, 1 push pin, 1 wooden block. For each group: 4 blinds, two 4-inch tubes, two 10-inch tubes. Big Idea If work is to be done, a force is needed. If an object is forced to move, it takes more work to move it further. W = F∆x PE = mgh ∆PE = W It takes work to lift an object. Once it is lifted it has potential energy. That potential energy can be used to do work. Marbles may take different amounts of time to reach the bottom but their final velocities are relatively the same. Conservation of Energy ∆PE = ∆KE Connection to Culminating Activity Work is a central concept for the culminating activity. By placing objects in strategic positions, they can store potential energy for later use. Mechanical energy is conserved CA Standards IE1. d PH2. b and c; IE1. d, j PH2. c; IE1. b, c, j Next Gen Sci Standards HS-PS3-1 Asking questions and defining problems. Constructing explanations and designing solutions. HS-PS3-2 Asking questions and defining problems. Constructing explanations and designing solutions. HS-PS3-2 Asking questions and defining problems. Analyzing and interpreting data. Constructing explanations and designing solutions. pin
CONSERVATION_OF_ENERGY-Chain_Reaction_Machine.docx