1. presented by Betsy Sanford 6th Grade Earth Science
Energy Transfer
presented by Betsy Sanford
6th Grade Earth Science

2. Properties of Energy Not matter Does not have mass (no “stuff”)
Does not have volume (takes up no space)
Examples of Matter and Energy:
A light bulb is made of matter; the light it gives off is energy
A piece of wood is made of matter; when it burns it gives off energy
A guitar is made of matter; when played, it gives off energy as sound

3. Types of Energy Sound (vibrations)
Mechanical (motion = potential + kinetic)
Electromagnetic Radiation (visible light, infrared light, ultraviolet light, microwaves, etc.)
Sound (vibrations)
Electrical (moving electrical charges; currents)
Chemical (energy in the bonds between molecules)
Nuclear (fission or fusion of an atom’s nucleus)
Thermal (heat due to motion of particles)

4. Energy Transfer Energy is transferred by two means Doing Work
mechanical energy causing motion
Heat Transfer
flow of heat from one object to another
an object has more thermal energy when hot than when cool
molecules in motion will speed up and spread out as heat is gained
happens in three ways: conduction, convection, or radiation

5. Heat Transfer Conduction – by contact Convection – by current
molecules collide like billiard balls in a game of pool
works best in materials that have simple molecule that are close together
happens in solids, liquids, and gases
Convection – by current
movement of heat by liquid or gas
wind currents
water currents

6. Heat Transfer Radiation – through empty space
the movement of electromagnetic waves
when sunlight reaches earth
when sunburn happens
when infrared light rays strike an object and heat up
examples: sun, light bulb

7. Measuring Energy Heat – thermal energy
Temperature – the measure of heat
the amount of heat coming from an object
Absolute zero is no heat at all being given off by an object

13. Importance of Energy - Exit Ticket
Choose and answer 2 of the following in complete sentences…
Why does energy matter?
So, why study energy?
Why is energy important?
How is energy connected to what we have already studied this year?
How do you interact with the various forms or types of energy? Give examples.