science exit project? is that like a science fair project?! :/
Lung Cancer

grandpa died of that
anyways try :
http://www.sciencebuddies.org/science-fair-projects/science_project_ideas.php
for ideas.
i have quit a few :
time test-
see how long it takes an "heavy" object to fall
then test a "light" object
see which falls faster
drop from a balcony
which brand of diaper holds more water?
which type of plant last longer in the clod weather?
Which store do more people prefer?(ask weather they like,walmart,tartget,kmart,khols better,keep a poll of which is more liked)
Which website do more people prefer? Facebook vs. Myspace (if ur older then 14)
Does eye color effected vision?(how well people see.
see which 'color eyes' have more glasses.)
Which soda do more people prefer?
Which type of shoe is more popular?(nike...ect)
Does what brand of gas (reg. pre. ect effect how far ur car can go?[mile 2 the gal. )
Which plant grows taller,soda or milk plant?
Which food does the dog "prefer"? (give the dog 1 food 1 day,measre how much he eats,. give it another food the next day,which does he eat more? do this 3+ times with each to be accurate)
Does texting on a phone cause you to wreck more on a 'car racing game' vs. talking on the phone? (what u do : get a car racing game,which a steering wheel,. text people during the first test,count how many times u wreck/go off course. then test while talking on the phone,see how many times u wreck/go off course...this will see which is worse texting or talking on the phone -of course NONE of these is good- )
Does age effect taste buds?
(what to do: get three diff types of kool-aid (or any drink) get a young person -12 threw 15. get a 30 threw 50 and get a 51+ person. and see how much they can guess right, -make them easy flavors,like lemon,grape,apple-
Which makes u have to go pee more,apple juice,soda,or water?
Drink only apple juice for a day,count how many times u go,
then drink only water for a day and see how many times u go
then drink soda only for a day and see how much u go