For the experiment, you will need: three film canisters with lids, a basin of water, sand.
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Fill
one small canister with water. Put the lid on under water.
(This will ensure that no air enters.) |
Fill
one small canister with sand. Put the lid on.
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Fill
one small canister with air.
(As this canister is already filled with air, just put the lid on.) |
| Which canister floats the best (floats highest in the water)? Based on your experiment, what do you think is inside the kelp bladders? | ||
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