Project Design

I have a general outline of how I'm going to conduct the experiment now. It's not very detailed and I haven't got the specifics figured out though. Hope it's good enough for the moment.

Aim: To investigate whether the buoyancy of an object is affected by the salinity of the water in which it is placed.

Hypothesis: That an object will be more buoyant in water with a higher degree of salinity.

Equipment: container with measurements marked across, measuring cups and spoons, floating object, water, salt

Method:
1. Measure a certain amount of water and pour it into container.
2. Place object in container and wait until it stabilises.
3. Determine the distance between the bottom of the container and the bottom of the object.
4. Repeat previous steps several times, adding an extra tablespoon of salt each time.

Possibilities

Alright, thinking of different things I could test in relation to buoyancy.

1. Buoyancy of different types of objects. Independent variable would be the object used, while dependent variable would be whether it floats/how much it floats.

2. How different types of liquids affect the bouyancy of an object. Independent variable would be liquid used, while dependent variable would be how much the object floats.

3. How the degree of salinity in water affects the buoyancy of an object. Independent variable would be the amount of salt used, while dependent variable would once again be how much object floats.

Bouyancy

Talking to my sister in hopes of inspiration, and she came up with the idea of doing something related to buoyancy. So I'm thinking of testing the buoyancy of one particular object in various liquids. Either completely different liquids, or perhaps water with varying amounts of salt. Will have to think about exactly what I want to test and how to go about it. Yay for at least having some sort of idea, however vague it may be at the moment.

Ideas

Looking through the list of project ideas Miss Zhang gave. A few sound interesting.

*How good are we at hearing one voice in the crowd?
Interesting, but tricky to conduct an experiment on, since I would need to get quite a large group of people together.

*Eyes and the ability to judge distances
Also kind of interesting, though couldn't manage to think of a good experiment. Thought about having people guess their distance away from a certain object, but that seems un-scientific.

*Examine the human ability to balance
Sounded like a funny experiment to conduct, watching people try to balance and fall over lol. Results would depend a lot on the individuals and wouldn't conclude much on humans in general, though.

*Eggshell strenth and organic eggs
The experiment that came to mind was comparing the eggshell strength of caged eggs and free range eggs. But doing something like seeing the height from which an egg can fall without cracking seems too simple.

Thinking

Still don't really know what to research. Would prefer to stay away from plants and different brands. Hm.