Unit 1 Lesson 5
Fluids and Pressure
P 56-65
Name__________________________
Hour_______________
Date_____________
What are Fluids?
1) A fluid is
__________________________________________________________________________________
____________________________________________________________________
2) Two examples of fluid are: ________________________ and __________________________
Why do fluids exert pressure?
3) Pressure is
______________________________________________
______________________________________________
______________________________________________
_____________________
How is Pressure calculated?
Calculate the pressure that water exerts on the bottom of a
fish tank. The water presses down on the bottom with a force of 200N, and the area of the bottom of
the tank is 0.4m2
4) Pressure Formula:
5) Plug numbers into the formula:
6) Answer is the correct unit of measurement for pressure: ____________________________
What are two familiar fluids that exert pressure? 7) _____________________ & _________________
8) _________________________ is the pressure caused by the weight of the atmosphere.
How does depth affect fluid pressure?
9) Pressure increases/decreases as depth increases.
(circle one)
What are some examples of fluid motion due to pressure? (see red headings for 10 and 11)
10) ___________________________________________________________
a) When you breathe, fluid flows from _____________________ to _________________ pressure.
11) ___________________________________________________________
b) Air moves from areas of _____________________ to areas of ________________ pressure.
c) The movement is known as ______________________.
Unit 1 Lesson 5
Fluids and Pressure
P 56-65
Name__________________________
Hour_______________
Date_____________
What causes Buoyant Force?
12) Buoyant Force is
_____________________________________________________________________________________
How is buoyant force calculated?
13) _____________________________ principle states that the
buoyant force acting on an object in a fliud is
_______________________________________________________
___________________ of fluid that the object
______________________________.
What can happen as a result of weight and buoyant force? (See red
headings)
14)________________________________________________________
If the objects weight is equal to the buyoant force
15) _________________________________________________________
If the object’s weight is grater than the buoyant force
16) ___________________________________________________________
If the buoyant foece on a object is greater than the object’s weight
What affects the density of an object?
The density of an object is related to its abiility to sink or float.
17) Density is related to __________________ and _______________________ in a mathematical formula.
18) Density Formula: