Questions of 9.1

Questions of 9.1
1. The pressure of air sea level is called __________.
2. The tendency for objects to rise or float in a fluid is called _________.
3. What caused Buoyancy to occur?
4. If the _______ force is greater than the force of _______ the object will rise.
5. For water, air, and all other fluids, pressure ______ with ______.
6. Is the air pressure on the mountain greater or at the base? Why?
7. Which of the following has less dense, cooler air or heated air?
8. Why does pressure in a fluid increase with depth?
9. What will happen if the buoyant force is equal to the force of gravity?
10. Give an example when the buoyant force is greater than the gravity.

Answer key
1. One atmosphere
2. buoyancy
3. Because of differences in density
4. buoyant, gravity
5. increase, depth
6. At the base, because air pressure increase with depth.
7. Heated air
8. There is a lot more water pushing down on the water at the bottom.
9. The object will float.
10. Helium balloon