Download Additional Energy Terms

Additional Energy Terms
4/16/2012
Today’s Goal:
• Name and describe other types of energy.
• Describe energy transfers and
transformations.
• Calculate Kinetic energy = ½ mv2
• Calculate gravitational potential energy
and kinetic energy.
Energy Notes
Name and describe different types of energy.
• Potential: chemical, gravitational, elastic, nuclear,
magnetic
• Kinetic: motion, heat, electric, light, sound
What can happen to energy?
• Transfer or transformation. Always conserved.
Heat energy: movement/vibration of molecules. Measured
by temperature
• Methods of transfer (going from one location to another,
from area of higher to lower energy)- conduction,
convection, radiation.
• Conductor- energy moves easily through it
• Insulator – energy does not move easily through it
How are these important to energy savings?
Add to Energy Notes:
• Total energy = potential energy + kinetic energy.
• Top – Potential energy is high, kinetic energy is
low.
• Bottom – Kinetic energy is high, potential energy
is low.
• Energy is measured in Joules
• Kinetic energy in joules = ½ mv2 (mass in kg, v
in m/sec)
PE/KE Worksheet
• Fill in the blanks by calculating the PE and
the KE
• Remember –
– Total Energy = KE + PE
– KE = ½ mv2 (When you know mass and
velocity)