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Science Unit 8 Lesson 1 and 2
Terms in this set (39)
The form of energy associated with motion, position, or shape of an object
An objects mechanical energy is a combination of which two types of energy?
Potential energy and kinetic energy
How can you find an object's mechanical energy?
Adding together the object's kinetic energy and potential energy
A change of energy from one form to another
When can transformation between kintetic and potential energy occur?
When an object rises or falls
Swings back and forth
Law of conservation of energy
States that when one form of energy is transformed to another, no energy is lost in the process
According to the law of conservation energy...
cannot be created or destroyed
The total amount of energy...
Is the same before and after any transformation
Total kinetic and potentail energy of the particles ina n object
Thermal Energy is also known as...
When particles in an object move rapidly, you can feel it as heat
Whenever a moving object experiences friction...
Some of its kinetic energy is transformed into thermal energy
Where is a pendulum greatest speed at?
The bottom of the swing
The ability to do work or cause change
What energy is measured in ; same units as work
What happens when you do work on an object?
Some of your energy is transferred to that object
What happens when energy is transferred?
The object upon which the work is done gains energy
When is work done?
When a force moves an object
What are two examples of forces?
A push or a pull
Transfer of energy
The rate at which energy is transfrred, or the amount of energy transferred in a unit of time
How do you find power?
Energy Transferred divided by time
Different machines have _____________ amounts of power
What are the two basic types of energy?
Kinetic energy and potential energy
What does BOTH kinetic and potential energy depend on?
Motion, position, and shape of the object
The energy an object has due to its motion
What does kinetic energy depend on
It's speed and its mass
How fast the object is moving
When does kinetic energy increase?
When an object moves fast and when the mass increases
How do you calculate kinetic energy?
Multiply mass and speed squared. Then divide it by two
Energy that results from the position or shape of an object
Does an object have to be moving to have energy?
What does potential energy have the "potential" to do?
To do work
Gravitational Potential Energy
Potential energy related to an object's height
What work is equal to force multiplied by the distance is measured in
How do you find gravitational potential energy?
Multiply weight by height
Elastic Potential Energy
The energy associated with objects that can be compressed or stretched
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