Potenial and Kinetic Energy Flashcards
What is Potential energy and give all the examples?
Potential energy is that energy stored in an object or system. The energy is not used immediately but can be used to do work later. Gravitational Potential Energy, Chemical Potential Energy and Elastic Potential Energy.
What Gravitational Potential Energy?
Gravitational Potential Energy is the energy in a book for example that could fall at any time like when it is knocked off or something.
What is Elastical Potential Energy?
Elastical Potential Energy is the energy stored in an object that is elastical as a result of stretching or compressing a material.
What is Chemical Potential Energy?
Chemical Potential Energy the energy stored in an object that usually needs food and fuel in order to release this energy called a chemical reaction.
What unit is energy measured in?
Joules (J)
What is kinetic energy?
Kinetic energy is when something is moving.
Name 4 types of Kinetic energies.
Motion, thermal, sound and electrical energy.
Give an example of each type of Kinetic energy.
Sound Kinetic-the smack of a baseball on a bat, echoing through a baseball stadium. Motion Kinetic- Car. Electrical kinetic- Electrons flowing through a wire to charge your cellphone. Thermal kinetic- Rays of sunlight travelling to a plant.
What is a mechanical system?
A mechanical system uses forces and movement to do a specific task.
What is a Thermal system?
A Thermal system is energy produced by heat. Heat energy is transferred between the different parts of a Thermal system.
What is an electrical system?
An electrical system is a system that usually travels the chemical potential energy to the source.
What is a biological system?
Biological energy originates from the Sun and is stored in animals and plants in the form of chemical energy.
What is the law of conservation of energy?
Energy cannot be destroyed or created but can be transferred.
Explain the law of conservation of energy with an example.
Energy is like money: When you use the money, it does not disappear - it only transferred to another person, who then can use it. If you don’t have any money, you cannot make it from anything. Instead, people who do have money need to transfer the money to you.
Show the transfer of energy in a hairdryer.
Electrical-Motion-Sound-Thermal (All Kinetic)
