Energy and Energy Transformations

Essential Questions

Bellwork: Copy Essential Questions on your notes.

• What is energy?
• What are the different forms of energy?

​

Energy

• Energy is the ability to cause change
• Energy can be classified 2 ways
• potential energy
• kinetic energy
• many different forms and different effects
• energy is expressed in joules (J)

​

Potential Energy

• stored energy
• due to position energy stored and ready to use later
• energy due to position, condition or chemical composition

Kinetic Energy

• the energy due to motion
• amount of KE depends on its mass and speed

Different Forms of Energy

• Mechanical Energy
• Sound Energy
• Electromagnetic Energy
• Electrical Energy
• Chemical Energy
• Thermal Energy
• Nuclear Energy

Mechanical Energy

• sum of an object’s KE and PE
• energy of position and motion

Sound Energy

• kinetic energy
• caused by vibration of particles in a medium such as steel, water, or air

Electromagnetic Energy

• transmitted through space in the form of electromagnetic waves
• visible light
• x-rays
• microwaves

Electrical Energy

• energy results from position or motion of charged particles
• how we get light from power lines

Chemical Energy

• potential energy
• depends on the kinds of atoms and their arrangement
• batteries
• matches
• breakdown of food

Thermal Energy

• kinetic energy
• particles move faster the higher the temperature

Nuclear Energy

Energy released when atoms break apart or when two small nuclei come together

• energy from sun is nuclear

Energy Transformation

when energy changes from one form to another

Law of Conservation of Energy

energy cannot be created or destroyed it only changes forms

​

Road Runner

Energy Transformations

Study Jams Energy

Study Jams

Make me a genius