| A | B |
|---|
| energy | ability to do work |
| kinetic energy | energy of motion |
| potential energy | stored energy or energy that an object has due to its position |
| top of roller coaster, wind-up toy spring, battery, food | examples of potential energy |
| LEAST POTENTIAL energy & MOST KINETIC energy | at the bottom of the hill, all car's potential energy has been changed to kinetic energy |
| KINETIC energy CHANGING to POTENTIAL energy | when the car begins to zoom back up the next hill; |
| kinetic energy DECREASES | Potential energy INCREASES as...... |
| Potential energy CHANGING to Kinetic energy | as you move down the hill |
| MOST POTENTIAL energy & LEAST KINETIC energy | at the top of the hill |
| sound energy | energy of vibrations carried by air, water or other matter |
| anything you hear with your ears | example of sound energy |
| radiant energy | energy that travels as waves & can move thru empty space |
| x-rays, sun rays, heating lamp to keep food warm | examples of radiant energy |
| electrical energy | energy carried by electricity |
| radio, lamp | examples of electrical energy |
| mechanical energy | energy an object has due to its motion, position or condition |
| person running, bike at the top of a hill, spring in wind-up toy | examples of mechanical energy |
| nuclear energy | energy produced when at atom splits apart or when 2 atoms join together |
| nuclear plant, atomic bomb | examples of nuclear energy |
| chemical energy | energy stored in the way atoms are connected to each other |
| chemicals released when eating - powers muscles | example of chemical energy |
| thermal energy | energy of the movement of atoms & molecules |
| melting ice, burning coal | examples of thermal energy |
| RADIANT energy changes to CEMICALchemical energy | when plants use sunlight to grow |
| RADIANT energy changes to THERMAL energy | when panels on house use sunlight to heat house |
| THERMAL energy changes MECHANICAL energy | when coal is burned to power a generator |
| ELECTRICAL energy changes to SOUND energy | when a radio plugged into an outlet is turned on |
| ELECTRICAL energy changes to MECHANICAL energy | when a fan plugged into an outlet is turned on |
| Radiation energy | Classified according to their wavelengths |
| gamma rays | preserve food; treat cancer |
| x-rays | show teeth & bones |
| ultraviolet | cause sunburn; kill germs |
| visible light | light people see |
| infrared rays | show heat |
| microwaves | heat food |
| radio waves | tv & radio signal |
| Gamma Rays, X-rays, Ulraviolet, Visible Light, Infrared Rays, microwaves, radio waves | List the 7 wavelenghts - shortest to longest |
| If object is TRANSPARENT | ALL light passes thru almost unchanged ex. saran wrap |
| If object is OPAQUE | NO light passes thru ex. aluminum foil |
| if object is TRANSLUCENT | SOME light passes thru but it's blurry ex. wax paper |
| vibrations | rapid back & forth movement of the air |
| sound | can ONLY travel thru MATTER (so you couldn't hear people talking if you were in outerspace) |
| LOW frequency soundwaves | have LONG wavelengths - hear DEEP sound |
| HIGH frequency soundwaves | have SHORT wavelengths - hear HIGH sounds |
| Bats | use high frequency sounds to fly |
| Dogs | can hear but in lower & higher frequency sounds |
| bats & dogs | 2 animals that can hear better than humans |
| March 17 | St. Patrick's Day |
| March 19 | St. Joseph's Day :) |
