Explain what you think energy is. Give an example of something with a lot of energy, and something with very little energy.

Energy is a fundamental concept in physics. It can be defined as the capacity to do work or the ability to cause change. Energy exists in several forms such as kinetic, potential, thermal, gravitational, sound, light, elastic, and electromagnetic energy.

An example of something with a lot of energy could be the sun. The sun has an immense amount of energy, primarily in the form of heat and light. This energy is produced by nuclear fusion reactions that occur in its core, where hydrogen atoms combine to form helium, releasing a large amount of energy in the process.

On the other hand, an example of something with very little energy could be a single grain of sand. While it does have some energy (everything does), the amount is very small compared to larger or more energetic objects. The grain of sand has potential energy due to its position (if it's on a slope, for example, it has the potential to move), and it may have some thermal