Sinking / Floating Experiment
Aim:
To study floating / sinking
Theory:
Density refers to the amount of matter there is in a given space. Different things have different densities. For example, a cup of water has more Density than oil and syrup has more density than water.
Materials:
• Measuring cup
• Clear glass jar
• ½ cup water
• ink
• ½ cup syrup
• ½ cup vegetable oil
• Bolt , metal cap , plastic cap and small piece of sponge
Procedure:
1. Pour the water into the jar and add 10 drops of blue ink
2. Pour the syrup into the jar.
3. Carefully pour the oil into the jar.
4. Drop the bolt into the jar.
5. Drop the ball into the jar. Does it float? Sink?
6. Continue dropping objects into the jar and observing what happens.
Observation:
1. Bolt is sinking in syrup
2. Metal cap Sinking in water and floating on syrup
3. Plastic cap Sinking in oil and floating in water
4. Sponge floating in oil
5. Oil is floating on water and water floating on syrup.
Conclusion
1. If Density of a solid is less than liquid, it floats.
2. If Density of a solid is more than Liquid , it sinks.
3. Density of oil less than water. Density of water less than syrup.
Learning outcome-
Submarine uses ballast tanks filled with compressed air and when needed the air is released and takes on water which increases the density making it sink but when the water is pushed out the sub's density is decreased making it float.
