Module: Energy and Speed
DCI: PS3.A (A) Definitions of Energy – The faster a given object is
moving, the more energy it possesses.
PE: 4-PS3-1 Use evidence to construct an explanation relating the
speed of an object to the energy of that object.
[Assessment
Boundary: Assessment does not include quantitative measures of changes in the
speed of an object or on any precise or quantitative definition of energy.
The ideas we see in this standard are:
- faster moving objects possess more energy than those that are moving slowly
- faster moving objects possess more energy than those that are moving slowly
The evidence we use to construct the evidence might be several balls rolled along a straight path, one moved faster than another in the same amount of time, so which has more energy. Or, we can ask generalized questions about the relationship between speed and energy.
Possible Question Starters:
"Which of the following statements related to the speed of an object and its energy is correct?"
correct answer - the faster an object moves, the more energy it has
incorrect answer - the faster an object moves, the less energy it has
"Which of the following would possess the most energy?"
correct answer - A car driving down the road at 70 miles per hour
incorrect answer - A leaf blowing in the wind at 10 miles per hour
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