Chapter 13 test cards Flashcards
What is energy?
The ability to do work or cause change
What is power?
The rate at which energy is transferred
What is work?
The transfer of energy
Energy transferred/Time=
Power
What is kinetic energy?
The energy of motion
When K.E. increases, what does velocity do?
Increase
The more mass a moving object has, the more ….
K.E. it has
Energy that is stored and held in readiness is called what?
Potential Energy
What does gravitational potential energy depend on?
Height
Potential energy associated with objects that can be strecthed or compressed is called what?
Elastic Potential Energy
Potential energy stored in chemical bonds that hold chemical compounds together is called what?
Chemical energy
How does electromagnetic energy travel?
In waves
Why do the waves have kinetic energy?
Because they move
What are the two properties electromagnetic energy waves have?
Electrical properties and Magnetic properties
When you stretch a rubber band what kind of energy are you giving it?
Elastic potential energy
When you release a stretched rubber band and it flies across the room, what happened?
An energy transformation
What does the law of conservation of energy state?
When one form of energy is transformed to another, no energy is destroyed in the process
Energy cannot be what?
Created or destroyed
What is combustion?
The process of burning fossil fuels
When combustion takes place, what energy transformation takes place?
Potential energy into thermal energy
What is the formula for Mechanical energy?
Potential energy + Kinetic energy
What are the two basic forms of energy?
P.E. and K.E.
