Energy Quiz Revisions | Mrs. Erin Schumacher & Science
Play this quiz and learn difference between potential and kinetic energy. We also speak of kinetic energy, potential energy, and energy in springs. Energy Potential energy (PE) is energy that is "stored" because of the position and/or. Q. As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? answer choices. Both the potential energy and.
Season of Springs The study of springs is a whole section of physics. A spring that just sits there doesn't do much. When you push on it, you exert a force and change the arrangement of the coils.
That change in the arrangment stores energy in the spring. It now contains energy and can expand and do work on other things. Anything that is elastic can change its arrangement and then restore itselfsuch as a rubber band, can store energy in the same way.
A rubber band can be stretched and then it is ready to do something. That stretching involves work and increases the potential energy. You can flatten a solid rubber ball and it will want to bounce back up.
You can also pull the drawstring of a bow and the work done stores the energy that can make the arrow go flying. Those are all examples of your putting energy in, and then something happening when the energy comes out. Gases Storing Energy Gases?
What can they do? Gases are great because they can compress and expand. They act as if they were elastic.
If the pressure increases and compresses gas molecules, the amount of stored energy increases. It's similar to a spring, but slightly different.
Eventually that energy in the compressed gas can be let out to do something work. In your car, there are shock absorbers. Some shocks have compressed gas in the cylinders rather than springs. Energy illuminates the lights in our homes and moves cars down the road. Energy is usually defined as the ability to do work. Scientists have learned how to change energy from one form into another to make our lives more comfortable. Energy exists in different forms, such as heat, motion, light, chemical, and sound.
While there are different forms of energy, all the different forms can be put into two categories.
One category would be kinetic energy. That's energy of motion. The other category is potential energy. That's energy stored in an object due to its position.
Kinetic and Potential Energy
What Is Kinetic Energy? Let's first explore kinetic energy. Kinetic energy of an object is the energy it contains due to movement.
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If an object is at rest, it doesn't have kinetic energy. If it's moving, then it has kinetic energy. The amount of kinetic energy of an object is dependent upon two variables, one being the mass of the object, the other being the speed or the velocity of the object. Let's look at an equation that will help us calculate kinetic energy and understand the relationship of these variables.
Kinetic energy vs. Potential energy
This is important because small changes in speed will result in larger changes in kinetic energy. For example, if a car moves twice as fast as another, it will contain four times as much kinetic energy.
That is assuming that both cars have the same mass - or even if you talk about the same car and it moves twice as fast, it will also have four times as much kinetic energy.