FBA 8th grade chapter 11 science - 2
Terms
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- Why do fluids exert pressure?
- Because they are made up of tiny moving particles, or molecules, that combine and exert forces.
- An object that is more dense than water will...
- sink
- An object that is less dense than water will...
- float
- What unit is pressure measured in?
- Pascals (Pa- N/m2)
- 1 N/M2 = 1____
- 1 Pa
- pressure
- the force exerted on a surface divided by the total area over which the force is exerted
- fluid
- A material that can easily flow
- barometer
- an instrument that measures atmospheric pressure
- buoyant force
- a force that acts in the direction opposite to the force of gravity, so it makes an object feel lighter under water.
- density
- mass per unit volume
- lift
- an upward force - airplane wings are designed to produce lift