2007-03-22 08:32:56 · 5 answers · asked by Anonymous in Education & Reference ➔ Homework Help
technical: Compare dc current electricity to AC current
Compare hybrid cars to regular petrol cars
sport: Compare American football to European football (soccer)
what are your interests?
2007-03-22 08:49:36 · answer #1 · answered by ithinkiatetoomuch 5 · 0⤊ 0⤋
Get a stopwatch, a wooden board and a toy car.
Tilt the board at an angle. Time how long it takes the car to reach the bottom without pushing it.
Increase the angle of the board and repeat.
Tape something to the car to increase its weight, and repeat.
Compare your results, and draw some conclusions.
2007-03-22 15:54:06 · answer #2 · answered by fcas80 7 · 0⤊ 0⤋
a wood bat and an aluminum bat-baseball
this is a fun activity to compare
2007-03-22 17:50:37 · answer #3 · answered by Danny 1 · 0⤊ 0⤋
http://collaboratory.nunet.net/timber/scifair/5proj.htm
Examples:
How do different liquids affect the growth of plants?
Does a plant grow taller in sand, soil, or water?
and many other suggestions.
2007-03-22 16:05:08 · answer #4 · answered by MailorderMaven 6 · 0⤊ 0⤋
photosynthesis
2007-03-22 15:36:30 · answer #5 · answered by Anonymous · 0⤊ 0⤋