2. 2/11/10 2117

3. Energy Potential energy- stored energy Kinetic energy- energy of motion Work-an object + force + motion Force- a push or pullEnergy- the ability to do work and make a change Forms of Energy I have the potential to have energy I am energy in motion Light Energy-energy you can see, Heat Energy-energy you can feel, Sound Energy-energy you can hear

4. Magnetism Magnet-is an object that attracts certain other objects to it Magnetism-is an attractive force Law of Magnetic Attraction- states that like poles repel and unlike poles attract

5. Light and Colors Spectrum of lightSpectrum of light-light that is separated Refract- when light passes through a prism it gets refracted or bent Reflect- to bounce back We see certain colors because sunlight is made up of many different colors of light. Additive color mixing- mixing light beams because each beam of light adds its colors to the mixture Subtractive color mixing- taking light and separating it into beams of color, like a prism Prism- a triangular prism made out of see through glass or plastic that separates light Absorb- swallowing up Red Orange Yellow Green Blue Indigo Violet

6. Lenses and Mirrors What do concave mirrors do when they are far away? Makes things fuzzyFlip the imageBreak

7. What do mirrors do? Show moviesPasses light through itSignal BATMAN Reflect light and images

8. What do convex lens do to images? Makes things smallerMakes things slimmerMakes things BIGGER

11. AMAZING!

12. The light beams converge and cross.

13. Eye= convex lens

15. Sound Vibrate- means to move quickly back and forth Sound energy- made when something causes an object to vibrate Sound waves- carries energy from one place to another Volume- the loudness of a sound Frequency (pitch)- the difference between highness and lowness Sound waves

16. Engineering Technology-Anything manmade to help improve something and solve a problem Engineering- uses math and science to help people solve problems Engineering design process- Ask questions, imagine solutions, plan and create design, and improve it.