Review your understanding of changes in energy in this free article aligned to NGSS standards.
- Energy can’t be created or destroyed. If one object loses energy, another object has to gain that energy.
- Energy can be converted into different forms. For instance, a hairdryer takes electrical energy and converts it into thermal energy.
- When an object’s motion changes, so does its energy. If a bicycle slows down, it loses kinetic energy. That kinetic energy will be converted into another form, such as thermal energy, or transferred to another object.
- When a force acts on an object the energy of that object changes. For instance, when you hit the brakes on a bike, you’re applying a force to the wheels. That force converts some of the kinetic energy into heat.
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- I really care about this and I took time to read this.
- if you have two of the same mass of a ball and one faster why would that be ^-^(4 votes)
- can air have kinetic or potential energy(2 votes)
- I love seeing the teachers who incorporate roller coasters and field trips to amusement parks in the name of science and energy. Sign me up! Has Khan entertained putting some "At home labs" to demonstrate these lessons?(2 votes)
- If potential energy is the potential to exert energy for movement, wouldn't humans have a massive amount of potential energy? Also, when that energy is exerted, would it be electrical energy that is used? If not, then what kind of energy?(2 votes)
- Your first question, no. Second, no. The type of energy is kinetic(moving) energy.(0 votes)