A cork has a low density. It is lower then water. That causes it to float.
No it wil float to the top of the water.
Yes
Because it is denser than you
Buoyancy
So you don't sink.
You can try bending the rod to the float slightly up or down.
It is easier to float because the sea water is denser than water found in a swimming pool. This is caused by the salt in the oceans.
Swimming floats can be bought places like Walmart, Target, Amazon, Toys R Us and the like. Another place to find a swimming float is through a pool store.
flap your arms like a bird andkick your feet like your swimming.
The salinitiy of the water allows you to be more buoyant.
a chair that you put in a swimming pool so you can stay cool and hold your drink.
Oil is denser than cork, so the cork would float.