What Is Energy? — Definition & Types
Read this topicExplanations 4
- Energy is the ability to do work. No, I'm not talking about your job! Work is the application of a force to move an object in the direction of the force. When you do work on an …
By Lydia Kim, Mario Janakis, Gabi Slizewska
- Matter is defined as anything that takes up space and has a mass. What about light? Or heat? We interact with those things daily, but they aren't matter. What are they? The answ…
By Adrien, Gabi Slizewska
- You probably already have an intuitive understanding of what energy is. Imagine you just finished a marathon. You are absolutely winded, you can't stop panting, you feel like yo…
By Jasper Brown, Gabi Slizewska
- (Video) Energy & Chemistry: Crash Course Chemistry by CrashCourse In this video, Hank from Crash Course talks about a lot of important concepts like potential energy, work, heat…
By Mario Janakis
Problems 25
- When you are swinging on the swing set and are at the highest point, where the swing turns around and brings you back down the other way, which types of energy do you and the sw…
- Which has more energy? A 1 kg block at a height of 1 meter, or a 1 kg block at a height of 2 meters?
- When you go for a run, where does most of the energy that you're using go?
- Which is not a form of energy?
- Water boils at 100∘ C100^{\circ}\text{ C}100∘ C. If 1 liter of water is at 25∘ C25^{\circ}\text{ C}25∘ C, how much energy must be added to boil it?
- Which has more energy: a ball balanced on the top of a ramp, or the same ball rolling doing the ramp? Ignore friction and air resistance slowing the rolling ball down.
- When swinging on a swingset, when do you have the most energy?
- What kind of energy is sound?
- Which type of energy primarily powers your body?
- Which of the following is not an example of kinetic energy?
- Select the example of energy.
- The combustion of wood produces light, heat, and carbon dioxide. Which of the preceding terms is not a form of energy?
- A chemical reaction that generates energy is called woah‾\underline{\phantom{woah}}woah.
- When you are at the top of a hill, you have a high gravitational potential energy. As you log roll down the hill, that energy becomes kinetic. Towards the bottom, however, you s…
- What happens during an exothermic reaction which allows energy to be released?
- Which of the following isn't a form of energy?
- When a ball is moving up through the air, it is converting woah‾\underline{\phantom{woah}}woah energy to woah‾\underline{\phantom{woah}}woah energy
- Calories are a unit of energy. The human body requires energy from food calories to do a multitude of things, including pumping blood, digesting food, and keeping itself at body…
- When light hits a black surface and gets absorbed, what happens to its energy?
- When objects become very hot, they begin to spontaneously emit light in a process called blackbody radiation. Does this process cool the object?
- Examine the diagram above. If the block is to change positions as shown, is more work done on route A or route B? Assume the same force is applied throughout both routes.
- Which of the following is not a type of potential energy?
- Objects have a tendency to minimize their potential energy. Which option does not describe such a process?
- Which is not a unit of energy?
- Which is not a way to express energy?