1. Energy Notes

2. Energy
Potential Energy is…
“stored” energy
energy of position due to gravity’s pull
Kinetic Energy is…
energy of motion
Potential is converted to Kinetic to cause movement… see next slide

4. A boulder resting at the top of a slope
Potential Energy
stored energy
EXAMPLES
A boulder resting at the top of a slope
WATER BEHIND A DAM

5. Water flowing down-slope in a stream
Kinetic Energy
energy in motion
EXAMPLES
Water flowing down-slope in a stream
Sediments moving down-slope in erosion
Mass movement (slides and slumps)

6. Energy Transfer
ALWAYS from HIGH AMOUNT to LOW!
ALWAYS from energy SOURCE (HIGH AMOUNT) to energy SINK (LOW amount)
There are 3 ways energy can transfer from energy source to energy sink
Conduction
Convection
Radiation

7. Example: occurs in _____________ ________________of molecules
conduction
Solids ONLY
occurs in _____________
________________of molecules
collision
Example:
OUCH!

8. differences in density
convection
Demonstration
Cool/HIGH
Density water
Sinks
liquids & gases
occurs in _____________________
caused by ____________________
differences in density
WARM/LOW
Density Water
Rises

9. convection examples:

10. energy travels in_____________
radiation
waves
energy travels in_____________
Examples:

11. Radiation
Can travel through solids
Can travel though liquids and gases too!
Radiation is the only method that can travel through SPACE (which is nothing)

12. ALL RADIATION travels the Same way but there are Different types!
Type is determined by wavelength
Are more
powerful than
Short waves
LONG waves

13. ESRT p 14! SHORT WAVE RADIATION LONG WAVE RADIATION SHORT wave Light

14. The SUN gives off most forms
Of radiation…
Incoming
SOLar
radiATION
In-Sol-Ation
MOSTLY
VISIBLE LIGHT
Some Infrared
(long wave)
A little Ultraviolet
(short wave)

15. Energy REVIEW
By what method is energy transferred directly from a heat source to a heat sink?
By what method is energy transferred from warm air to cool air?
By what method is energy transferred from the Sun to Earth?
What is the major type of EM Radiation that Earth received from the sun?
What color is the shortest wave visible light?