Did you know that every movement you do in this planet is done by using energy? In fact, you are using energy right now. Energy is the capability of producing work. Energy makes a change in an object. Force plays a role in deciding whether an object has done work or not (“Work and energy”, 2015). If the object moves towards the direction of the force, the work done is positive (“Work and energy”, 2015). If the object moves away from the force, the work being done is negative (“Work and energy”, 2015). An important aspect of energy is that it can never be destroyed or made, it can only be transferred into other bodies (“what is energy”, 2015). There is a set amount of energy in earth and that amount cannot increase and cannot decrease, this
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Work can be done by kicking a ball to reading a book. Energy is always measured in joules, this measurement is set so that all the countries in the world get accurate measurements and can compare each other’s measurements. There are different types of energy. One of them is thermal energy, and it occurs when particles move (“what is thermal energy?”, 2015). The next one is light energy, and an example of light energy is a light bulb. Mechanical energy is the energy that makes your car work. Electrical energy is the energy that gives the radio power (“Meaning of energy, types of energy and sourced of energy”, 2015). Chemical energy which is gained by eating and also found in fuels (“Meaning of energy, types of energy and sourced of energy”, 2015). Objects that stretch, like a rubber band have elastic energy (“Meaning of energy, types of energy and sourced of energy”, 2015). There are a few other types of energy but these are the most important. All of the types of energies listed above fall under one the following categories either kinetic or potential energy. Potential energy means that an object has the power to act a certain way and has the ability to produce work (“what is energy”, 2015). Kinetic energy means that an object is in motion and is producing work (“what is energy”, 2015). An example of an object having kinetic energy is a Frisbee flying through the air, it has kinetic energy because it is in motion. An example of potential energy is a swimmer standing on top of a diving board. The swimmer has the ability to jump of fall off and has the potential to go in action. The swimmers energy will not be released until the swimmer dives in. The things that affects how much potential energy an object has is its position (“what is energy”, 2015). An object sitting at the top of a hill has a larger amount of potential energy than an object positioned at the bottom of the hill.
Work can be done by kicking a ball to reading a book. Energy is always measured in joules, this measurement is set so that all the countries in the world get accurate measurements and can compare each other’s measurements. There are different types of energy. One of them is thermal energy, and it occurs when particles move (“what is thermal energy?”, 2015). The next one is light energy, and an example of light energy is a light bulb. Mechanical energy is the energy that makes your car work. Electrical energy is the energy that gives the radio power (“Meaning of energy, types of energy and sourced of energy”, 2015). Chemical energy which is gained by eating and also found in fuels (“Meaning of energy, types of energy and sourced of energy”, 2015). Objects that stretch, like a rubber band have elastic energy (“Meaning of energy, types of energy and sourced of energy”, 2015). There are a few other types of energy but these are the most important. All of the types of energies listed above fall under one the following categories either kinetic or potential energy. Potential energy means that an object has the power to act a certain way and has the ability to produce work (“what is energy”, 2015). Kinetic energy means that an object is in motion and is producing work (“what is energy”, 2015). An example of an object having kinetic energy is a Frisbee flying through the air, it has kinetic energy because it is in motion. An example of potential energy is a swimmer standing on top of a diving board. The swimmer has the ability to jump of fall off and has the potential to go in action. The swimmers energy will not be released until the swimmer dives in. The things that affects how much potential energy an object has is its position (“what is energy”, 2015). An object sitting at the top of a hill has a larger amount of potential energy than an object positioned at the bottom of the hill.