OMG. i just realised, that we need to do all that independent/dependant variable thing for our ideas, so here they are:

plant root thingo:
independent variable: the turning upside down of plants at a certain stage- what time in its puny plant life, or not so puny.., the amount of seeds used to grow, type of plant used
dependent: how the plant will grow- roots spreading outward, smaller than usual, any effects on plant

umm, what else did i suggest? oh the egg thing
i think i already did them though...
meh, cant be bothered checking if i did, so just in case:
independent: how much water, what size and type of egg, how much salt and other substances used, same glass/container
dependent: how much the egg will float/sink.

k, next is the hand ice one:
controlled: how much ice, freezer temperature, how much water, same bowl/container used each time, similar weather conditions, same shoelaces tied,
independent: what type of substace used to put my hand in each time, when to take my hand out, and more will come when i perfect this experiment if i actually do it.
dependent: how well the substance will insulate the heat, altering (or not) the ability to perform tasks such as tying shoelaces, and how long it will take to regain feeling (if lost)

ok, i seriously cant be bothered to do the taste/colour one, coz
1. i need to think, and my brain hurts
2. it's WAY past my bedtime- we have a science test 2morrow
3. im probably not going to do the experiment anyhow coz all the people i noe who are available for subjects all eat food that have wonkitated colours already- e.g. my whole family eats artificially flavoured aldi iceblocks that are electric blue, hot pink and highlighter yellow.

so... yeh
thats all for today
will come up with other (hopefully better) ideas later.