Applications - Archimedes' Principle

Applications of Archimedes' Principle

Introduction: Archimedes' Principle helps explain why objects float or sink in fluids. It is used in designing ships and submarines, measuring density with hydrometers, and even in hot air balloons. The upward force or buoyancy acting on a body immersed in fluid equals the weight of the fluid displaced.

1. Archimedes' principle is used to design:

Airplanes Submarines Cars Helicopters

2. Which instrument uses Archimedes' principle to measure liquid density?

Barometer Hydrometer Manometer Thermometer

3. Ships float because:

They are made of light material They are filled with air They displace water equal to their weight They move fast

4. A hot air balloon rises because:

It is pushed by wind It is made of cloth Hot air is heavier Hot air inside is lighter than surrounding air

5. Archimedes' principle relates to:

Magnetism Buoyancy Gravity Friction

6. A body sinks in a liquid if:

Its density is less than that of the liquid It displaces no water It is very small Its density is more than that of the liquid

7. Submarines control their depth by:

Changing shape Using fans Changing ballast water Using sails

8. The upward force experienced by a body in liquid is called:

Gravity Thrust Buoyant force Lift

9. Archimedes' principle can be used to find:

Volume of gas Area of triangle Weight of an object Density of an irregular solid

10. Which of these would float in water?

Object with more density than water Object with equal density as water Object with less or equal density than water All objects