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Transcript of priya's project-science!!!
S=SINK Different fruits and vegetables have different masses and densities e.g the potato sunk because it was more dense than the water. Whereas the pepper floated because it was hollow inside and was therefore less dense than the water. HERE IS A SHORT VIDEO OF ME CARRYING OUT PART OF THE EXPERIMENT! ...but first here is my hypothesis on the experiment FRUITS AND VEG HYPOTHESIS WHY
kiwi sink more dense than water
banana float shape
blueberry float light/less dense
mango sink heavy/more dense
potato sink heavy/more dense
pepper float hollow
aubergine float contains air pockets
chilli float hollow and light The Question? The Variables The Variables THE KEY enjoy!!!! object mass water displaced/volume results kiwi 75g 75ml sink
banana 125g 200ml float
blueberry 14.5g 1ml sink
mango 700g 700ml sink
potato 425g 500ml sink
aubergine 350g 500ml float
pepper 225g 260ml float
chilli 14.5g 1ml float Archimedes Principle says... water displacement
If the weight of an object is lighter than the weight of the amount of water it displaces then the object will float.
here is a video about water displacement factors to consider whether an object floats or sinks are:-
* material (wood floats, clay sinks)
* air (hollow) shape
shape can help an object to float because if you were to make a ball made of clay and drop it in water then it would sink, whereas is you had mould the same clay ball into a canoe then the clay is likely to float.
the object pushes more liquid out of it's way in relation to it's weight when an object is immersed in a liquid the upthrust is equal to the weight of liquid displaced by the object why do boats float we ask?
Boats are extremely heavy yet still float because the boat hull is lighter than the total amount of water that the boats hull displaces. Basically a boat floats when it has displaced just enough water to equal it's original weight-buoyancy. conclusion... Hypothesis...
predictions/educated guess Variables...
any factor that can exist in differing amounts or type-the fruit and veg Procedure...
how you carried out the experiment Conclusion...
what you learned from the experiment Question...
what is the experimental question you would like to find out... narrator Simi Mann AND Priya Purewal :-) -> CONCLUSION! THERE ARE SEVERAL FACTORS WE'VE LEARNED TODAY TO HELP OBJECTS FLOAT OR SINK.
*THERE ARE 2 FORCES AT PLAY GRAVITY AND BUOYANCY/UPTHRUST
OTHER POINTS TO CONSIDER ARE:-
*WATER DISPLACEMENT- HOW WATER IS PUSHED OUT THE WAY WHEN AN OBJECT SINKS
*HOW LARGE OBJECTS LIKE SHIPS CAN FLOAT WITH THEIR SIZE AND WEIGHT FORCES WHEN BOTH GRAVITY AND UPTHRUST ARE BALANCED THERE'S NO MOVEMENT THE OBJECT FLOATS producer/
director Jasmine Purewal