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1 слайд
Pressure in liquids and gases.
Pascal law
7th grade
№3 Talapker Secondary School
Kaliyeva Aigul Kairgeldinovna
Physics Teacher
Паскаль Блез
1623 -1662
1 слайд
Pressure in liquids and gases. Pascal law 7th grade №3 Talapker Secondary School Kaliyeva Aigul Kairgeldinovna Physics Teacher Паскаль Блез 1623 -1662

2 слайд
Pressure is a value equal to the ratio
of the force acting perpendicular
to the surface to the area of
this surface.
Pressure calculation formula
Where
p – pressure
F - applied pressure force
S - surface area / otherwise body support area /
2 слайд
Pressure is a value equal to the ratio of the force acting perpendicular to the surface to the area of this surface. Pressure calculation formula Where p – pressure F - applied pressure force S - surface area / otherwise body support area /

3 слайд
Pressure in liquids and gases of Pascal's Law
Why does the ball increase its volume?
•Conclusion:
• The pressure of the gas on the walls of the vessel and placed
in the gas the body is caused by the impact of gas
molecules.
3 слайд
Pressure in liquids and gases of Pascal's Law Why does the ball increase its volume? •Conclusion: • The pressure of the gas on the walls of the vessel and placed in the gas the body is caused by the impact of gas molecules.

4 слайд
What does gas pressure depend on?
Conclusion:
Gas temperature From the volume occupied by the gas.
4 слайд
What does gas pressure depend on? Conclusion: Gas temperature From the volume occupied by the gas.

5 слайд
How do gases and liquids impart pressure?
Pascal's law Liquids and gases transfer pressure in all directions equally.
5 слайд
How do gases and liquids impart pressure? Pascal's law Liquids and gases transfer pressure in all directions equally.

6 слайд
Pressure units Pa (Pascal)
1 Pa is the pressure that the 1H force produces,
acting on a surface of 1 m2, perpendicular to this surface
•Multiple and long units:
• 1 kPa = 1000 Pa 1Pa = 0.001 kPa
•1 MPa = 1000000 Pa 1 Pa = 0.000001 MPa
•1 hPa = 100 Pa 1 Pa = 0.01 hPa
Tanometr
Manometr
6 слайд
Pressure units Pa (Pascal) 1 Pa is the pressure that the 1H force produces, acting on a surface of 1 m2, perpendicular to this surface •Multiple and long units: • 1 kPa = 1000 Pa 1Pa = 0.001 kPa •1 MPa = 1000000 Pa 1 Pa = 0.000001 MPa •1 hPa = 100 Pa 1 Pa = 0.01 hPa Tanometr Manometr

7 слайд
Fluid pressure calculation
ShV
Vm
mgF
S
F
p
ghp
7 слайд
Fluid pressure calculation ShV Vm mgF S F p ghp

8 слайд
Exercises
•The DT-75M tracked tractor with a weight of 6610 kg
has a reference area of
both tracks of 1.4 m2. What
pressure does the tractor apply to the soil?
•Given
•m= 6610 kg
•S= 1,4 m
2
•р = ?
•Answer: P=46 270Pa
8 слайд
Exercises •The DT-75M tracked tractor with a weight of 6610 kg has a reference area of both tracks of 1.4 m2. What pressure does the tractor apply to the soil? •Given •m= 6610 kg •S= 1,4 m 2 •р = ? •Answer: P=46 270Pa

9 слайд
1 2
3
Complete tasks:
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1 2 3 Complete tasks:

10 слайд
1.If you fully understand the topic then pick up a green apple
2.If you’ve half understood the topic of a lesson then pick up a yellow apple
3. If you do not understand the topic of the lesson then pick up a red apple
10 слайд
1.If you fully understand the topic then pick up a green apple 2.If you’ve half understood the topic of a lesson then pick up a yellow apple 3. If you do not understand the topic of the lesson then pick up a red apple

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