Potential Energy Quick Lesson

Potential Energy Quick Lesson

Multiple Choice

Potential energy is...

• energy stored within an object

• energy due to movement of an object

Energy

• Energy is the ability work

In science, we use the SI (International System) aka metric to measure energy

• In science, energy is commonly measured in joules.

• 
  

• 
  

• 
  

Potential Energy is...

• the energy possessed based on its position relative to others, stresses within itself, electric charge, and other factors

• Ex: gravitational potential energy due to gravity when an object is held up that is released and turned into movement as it falls

• Ex: chemical energy stored in food that is released when your body uses that energy to live

• Ex: electrical potential in batteries when you have a positive and negative end that gets released when electrons flow from negative to positive

Potential Energy Formula

• PE = mgh

  ·      mass = kilograms

  ·      gravity = 9.8m/s²

  ·      height = meters

• 
  

• 
  

• 
  

3kg ball held 2m over the ground

• PE = mgh

• PE = (3)(9.8)(2)

• PE = 58.8J

Multiple Choice

Potential Energy is...

• stored to be released later

• in the middle of being used

Multiple Select

Select all the examples of potential energy you think are correct.

• a spring being pushed down

• water about to go over a waterfall

• an explosion releasing heat

Multiple Choice

Gravitational potential energy depends on the strength of gravity, ________ and ________ of the object.

• height and mass

• friction and movement

• mass and movement

• height and friction