ugh...

gosh i really hope ms Zhang approves of this experiment.....excited to actually try it out...

hehe aeroplanes ^^

Another idea:
How does the shape of the wings of paper aeroplanes affect the distance they are able to travel?

Independent variable is the shape of the wings.
Dependent variable is how far it travels.
Controlled variables:

• fly all aeroplanes one after the other and at the same location, so the change of weather does not affect the results.
• one person throws all aeroplanes.
• to throw all aeroplanes with your dominant hand.
• don't have obstacles in its path that can affect the distance it travels.
• use the same measuring device to measure.
• for every plane, measure from the exact same distance
• use the same planes for repetition of experiment.
• use same thickness paper to make each plane.
• use blank pieces of paper of the same size.

Interesting....

And the other idea =D

How many pin holes, on a piece of paper covering the opening of a cup, does it take for water from an inverted cup, full of water, to leak through the holes in the paper?

This is the experiment investigating bonds formed between water molecules, and the basics to how an umbrella works ^.~.

The independent variable is the number of pin holes I poke into the paper.
The dependent variable is whether the water will leak through the holes or not.
Controlled variables:

• same cup used for repetition of experiment
• paper has to be pressed firmly down along the edge of the cup, so it creases along the edge of the cup.
• paper has to be flat.
• use the same pin every time for poking the holes
• use paper of the same thickness
• don't squeeze water out of cup, so hold it in the same way for each repetition of the experiment

I don't know which experiment to choose...

Mmmm....don't know if this is valid

Okay, so the idea I gave before was a bit vague...and there was no real independent variable or dependent variable, and I've separated the experiment into two different experiments, so here goes:
How much water do you have to put into a cup to make sure that when it is inverted with a piece of paper covering the opening, the water doesn't fall out at all, even when your hand is removed?

Independent variable in this experiment: how much water you put into the cup.
Dependent variable: (without hand support) if the paper will fall off or not.
Controlled variables:

• Use same measuring cup for measuring amount of water, each time you measure
• Use the same cup for the water for repetition of experiment
• Use a flat piece of paper
• Make sure the paper is pressed firmly around the edges of cup so that it makes a fold on the paper around the edge of the cup
• make sure paper is not ripped
• use paper of the same thickness

Yeah!~

I'm so proud of myself that i finally thought of an idea that seems interesting...because air pressure is a mysterious topic, and I really want to try the experiment to see if it works....how cool would it be? ^^

I'm looking forward to actually doing the experiment, and it won't take long, because it's simple and quick, but can prove a lot of things!~

Sounds fun!~ and good luck everyone on getting your ideas~

finally have an experiment idea...

To investigate air pressure and bonds formed between water molecules, using a cup, pin, water and a piece of paper.

If you fill the cup with water, poke holes in a piece of paper, and then use it to cover the cup, and then flip the cup upside down holding the piece of paper over the cup, and then slowly take your hand away...will the paper fall off? Will the water leak through the holes? What do you guys think? I'll find out for you all through this experiment ^^.

I've always found this interesting, how umbrellas can prevent us from getting wet, I mean, if you squint and look closely at the cloth of the umbrella, there are visible holes. So why doesn't the rain just fall through those holes, I mean, liquid can leak through any hole, no matter what the size, right? This will also be investigated through this experiment ----- the bonds formed between water molecules~.

If I were to conduct this experiment, the dependent variable will be whether the paper will fall off or not, and whether water will leak through or not.

The independent variable in this experiment is the amount of air entering into the upside down cup.

The variables that will need to be controlled include the following:

• the paper cannot be folded, it has to be flat
• the size of the paper has to fully cover the opening of the cup
• the same size of paper should be used for repeating the experiment
• the paper has to be pressed down firmly around the edges of the cup
• the holes should only be poked with a pin, nothing bigger
• the same pin should be used when repeating the experiment
• the same cup should be used when repeating the experiment
• the same amount of water has to be used for repeating the experiment

That's all I can think of so far....can't come up with anything else, and I'm kind of confused about the dependent and the independent variable in this experiment....hard D=.

Hope this works ^^!

SRP initial idea o.O

jeez....for SRP...I wanted to do how milk affects the growth of plants....but then I realized plants don't have bones, and milk only helps the growth of bones right? -.- so I don't think I can do that for SRP. I have no idea so far of what I want to do....maybe something about plants....but that would be boring for me because I don't like plants and I don't have microscopes (which make the investigation of plants fun~!).

That is why I will think, think, and think more... until I come up with something fun ^^. Gosh, THINK MARY THINK!!!