English National Curriculum - Science Science
Mission Objectives
Define an elastic object
Calculate the energy stored in a stretched or compressed object
Describe the energy transfers in a bouncing object
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Words and meanings to learn
elastic
able to return to normal shape after being stretched or compressed
potential energy
energy stored in an object due to its position, shape, or state
energy
the capacity to do work
spring
an object that can be stretched by a force and then return to its original shape after the force is removed. Typically a spiral metal coil
proportional
a relationship between two variables. One variable is always a constant value times the other
Resources: Class presentation and handout, 1 cotton spool, 1 toothpick, 1 elastic band, 4 rubber washers and tape or a paperclip.
Handout: Discuss Hooke and his work on springs. Summarise his contribution to science. Calculations using the elastic Potential Energy Equation. (Including changing units and changing subject of equation). Make a spool racer and observe results. Use this to explore links between potential energy, kinetic energy and elastic potential energy.
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