4 Written Questions

1. the amount of matter in a given space; mass per unit volume
2. the principle states that the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of a fluid that the object displaces
3. the upward force that fluids exert on all matter; buoyant force opposes gravitational force
4. states that the speed of a moving fluid increases as its pressure decreases.

4 Multiple Choice Questions

1. the force that opposes or restricts motion in a fluid; drag opposes thrust
   1. fluid
   2. drag
   3. lift
   4. thrust
2. an upward force on an object that opposes the downward pull of gravity; differences in pressure above and below the object contribute to lift
   1. lift
   2. thrust
   3. fluid
   4. drag
3. the SI unit of pressure; equal to the force of 1N exerted over an area of one square meter
   1. pascal
   2. density
   3. pressure
   4. drag
4. the amount of force exerted on a given area, expressed in pascals
   1. drag
   2. pascal
   3. density
   4. pressure

4 True/False Question

1. atmospheric pressure → the pressure caused by the weight of the atmosphere
   

   True        False

2. pascals principle → the principle states that the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of a fluid that the object displaces
   

   True        False

3. fluid → any material that can flow and that takes the shape of its container
   

   True        False

4. thrust → an upward force on an object that opposes the downward pull of gravity; differences in pressure above and below the object contribute to lift
   

   True        False