Physics
Scientists Say: Discharge
In physics, this release of energy can rebalance electrical charges. In biology, such a release might cool you down on a hot day.
MS-PS3-4
Plan an investigation to determine the relationships among the energy transferred, the type of matter, the mass, and the change in the average kinetic energy of the particles as measured by the temperature of the sample.
More Stories in MS-PS3-4
- Tech
Gravity ‘batteries’ might help a weighty renewable-energy problem
To store the energy generated by wind and solar power, researchers are looking at mammoth systems that raise and lower weights.
- Physics
Explainer: Kinetic and potential energy
Kinetic energy depends on an object’s motion; potential energy hinges on its position. The relationship between the two sits in a special balance.
- Physics
Explainer: What are the different states of matter?
Most people know solids, liquids and gases — but what about the four other states of matter?
- Physics
Explainer: How do mass and weight differ?
Learn why these terms aren’t the same and which to use where. And should you report your results in kilograms? Pounds? If in doubt, try using newtons.
