Reference no: EM132512638

1. You hold a piece of wood in one hand and a piece of iron in the other. Both pieces have the same volume, and you hold them fully under water at the same depth. The moment you let go of them, which one experiences the greater buoyancy force?

a. The piece of wood.

b. The piece of iron.

c. They experience the same buoyancy force.

2. You place an object in a container that is full to the brim with water on a scale. The object floats, but some water spills out. How does the weight of the object compare with the weight of the water displaced?

a. Weight of object is greater than weight of water displaced.

b. Weight of object is less than weight of water displaced.

c. Weight of object is equal to weight of water displaced.

3. You put two ice cubes in a glass and fill the glass to the rim with water. As the ice melts, the water level (Hint: the density of ice is less than the density of the water, mass is conserved)

a. drops below the rim.

b. rises and water spills out of the glass.

c. remains the same.

4. Hot air is less dense than cold air. Could a hot-air balloon be flown on the Moon, where there is no atmosphere?

a. No, there is no cold air to displace, so no buoyancy force would exist.

b. Yes, warm air always rises, especially in a weak gravitational field like that of the Moon.

c. Yes, but the balloon would have to be filled with helium instead of hot air