Flashcards in Ch. 13 Test Deck (17):

0

## What is the equation for pressure?

### Pressure=Force/Area

1

## What is the SI unit of pressure?

### Pascal

2

## Pressure is the greatest at where?

### Greatest depth

3

## Fluid can be a ________ or _________.

### Gas or liquid

4

## What does pressure depend on?

### Type and amount

5

## What is atmospheric pressure?

### Air pressure increases as altitude decreases

6

## State Archimedes's Principle.

### The buoyant force of an object is equal to the weight of the fluid displaced by the object

7

## State Bernoulli's Principle.

### As the speed of a fluid increases, the pressure within the fluid increases

8

## State Pascal's Principle.

### A change in pressure at any point in a fluid is transmitted equally and unchanged in a ll directions of the fluid

9

## What is a hydraulics system?

### A devise that uses pressurized fluid acting on pistons of different sizes to change a force

10

## What is lift?

### The pressure difference between the top and the bottom of a wing that creates an upward force

11

## What is buoyant force?

### An upward force that acts in the opposite direction of gravity

12

## If the object's density is greater than the density of a liquid, the objet will _____.

### Sink

13

## Why do hot air balloons float?

### The pressure inside the balloon is lesser than the air outside the balloone

14

## What happens to pressure as speed increases?

### It decreases

15

## What are two factors that determine what the pressure of a fluid exerts?

### Force and area

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