Sunday, March 27, 2011

OPTICS - Make a Water Lens at Home

  • Take an old newspaper or magazine no-one wants anymore.
  • Lay a small piece of cellophane, cling film, or clear plastic on top of the newspaper.
  • Using a spoon, or even the top of your finger, place a single small drop of water on the cling film.
  • Look at the newsprint and you should be able to see that the water drop (which has a curved upper edge and a flat lower edge) magnifies the words.
  • Well done, you just made a lens 

Thursday, March 24, 2011

EARN A REWARD !!

Do some quick research and receive a reward in class on Friday!

IDENTIFY THIS ALABAMA SCIENTIST
- born to slave parents in 1864, sickly child at birth and most of his life
- developed method for rotating crops to increase yield
- discovered more than 300 products from peanuts
- discovered more than 170 products from sweet potatoes
- appointed to head of Agriculture Dept at Tuskeegee University

To get your reward, you must:
(1) find out WHO this is
(2) tell HOW MANY PATENTS he was awarded and
(3) tell WHERE/HOW YOU FOUND THE INFORMATION !

Wednesday, March 23, 2011

Energy: Can't Create It - Can't Destroy It !

The Law of Conservation of Energy
Energy may take on various forms (e.g. kinetic, potential, heat, light). The law of conservation of energy states that energy may neither be created nor destroyed but you can trade one form of energy for another  The biker is making energy trades (chemical to kinetic to potential to kinetic to heat) as he bikes up and down the hill.  ENERGY will be the topic for our class on Friday !