ok......i need ans n really fast.im a ninth grader n i need sum science fair ideas urgently.please help.?

Question

im in d ninth grade so keep d level in mind n plzzzzzzzzzzzzzzz suggest sumthing gud.i hav 2 submit d idea in anoder 13 hours.

ppl r doin stuff like geo space satellites n difficult things like dat so dis has 2 b sumthing of dat level.

has 2 b workin model

Answer 1

how many licks until you get to the center of a tootsie pop and blow pop? very fun to do!!

Answer 2

Project title Does the number of turns of wire in an electromagnet affect its strength?

Description
The purpose of this experiment was to find out if the number of wire wraps will effect the amount of iron filings an electromagnet picks up.

High-Ampere Magnetism

Description
There are a number of science museum exhibits which require many tens of amperes of electric current in a thick cable to generate strong magnetism. One example is a raft of compasses with a 200-amp cable running through the center of the raft. Or, three 100-amp cables with three-phase AC powering them, where the resulting field rotates and can spin a conductive object by induction. Rather than trying to build a 2-volt, 200 ampere supply, there is an easier way.

In stranded cable, the DC electric current divides equally among all
the strands.

If a 200-amp cable has 200 strands, then each strand actually has only 1.0
ampere. So instead of using a length of thick cable, why not wind a
hoop-coil of very large diameter? (e.g. a hoop that's 3ft in diameter.)
Wrap the coil with black electrical tape so that it resembles a circle of
heavy black cable. Send 1.0 amperes into the coil's connections, and you
have a circular "cable" which has one ampere within each "strand", and 200
amperes within the cable as a whole. There is no difference between a
segment of this "coil" and a segment of a thick electrical cable with an
enormous current inside.



NO EXPENSIVE DC POWER SUPPLY NEEDED

Depending on the number of turns and the thickness of the wire you use,
you can then power your coil with a 20-volt, 10-amp supply, (or a
200-volt, 1-amp supply if you used thin wire.) Even alkaline 9V battery
might give interesting effects. If the resistance of your coil is high
enough, it may be possible to plug your coil directly into 120VAC with no
gigantic power-supply box needed, just use a diode! (Make sure the total
wattage isn't too high. Your coil can be warm, but you don't want the
insulation in the center to melt! And better use a fullwave bridge
rectifier to get smoother DC.)

Answer 3

Go into your back-yard and try to identify every plant that grows there including the weeds. see if you can figure out how they got there and what their life cycle is like. Don't go to the front yard and don't include any adjoining property. If you live in a apartment in the city pick a small vacant lot or a small section of a local park.

Answer 4

Incandescent VS. Fluorescent lighting!

It's nice and easy and u just look some stuff up online. You can even buy a light bar (which is like a thing with three or four light bulb inputs on it) and then turn that on and talk about which costs more and which is more efficient.

Answer 5

you ought to attempt . . "Whose mouth is cleanser, a dogs's mouth or a human's mouth?" (remember the guidelines of the honest and if mildew is authorized and so on) start up off with 4 petri dishes crammed with gelatin. Then take a swab of your mouth, yet another persons mouth, a dogs's mouth and yet another dogs's mouth. placed those all in separate petri dishes. Then reported the upward thrust of diverse molds and fungus on the swabs over a three weeks era. Sounds gross even though it particularly is exciting and teenagers are fascinated . . . It has a "fantasy-busters" vibe to it and that i could say it particularly is a type of "dental test."

Answer 6

use a couple of prisms.
use first one to demonstrate split monochrome (white) light into seven colors.
use second one (along with the first one)inverted to demonstrate all the seven colors make up white light. you need a power full light source, in case you do not get sunlight.

Answer 7

something with magnets. There are science toys where the magnet floats above another magnet. You can explain magnetism.
there are magnetic toys or games.

Answer 8

types of leaves and their medicinal value