Year 8 Pressure in fluids

Slides:

Advertisements

Similar presentations

REPORTED BY: Xela Alexis S. Ibarra III - NEWTON. Hydrostatics – it is the study of this branch of fluid mechanics. Pressure on the walls and dams, and.

Advertisements

Pressure in fluids.

Have your homework on your desk. Prepare for the review game.

Do Now (11/7/13): What are the major topics and concepts from our unit on Fluids and Heat?

Pressure and Pivots Pressure P = F / A Fluid pressure P = ρ g h

The Properties of Fluids: More Practice. Pressure: Student Success Criteria I can solve problems and conduct an investigation related to the relationships.

Forces in Fluids Ch. 11.

Experimenting with Buoyancy Buoyancy (boy-an-see) is the upward force that a liquid exerts on an object. If the downward force (weight) of the object.

Properties of Fluids SCI 8: Fluids Unit Curriculum Outcomes Addressed: - Describe the movement of objects in terms of balanced and unbalanced forces (309-2)

Table of Contents Pressure Floating and Sinking Pascal’s Principle

Pressure Changes D. Crowley, Pressure Changes To be able to explain what happens to a diving bell when pressure changes Sunday, May 24, 2015.

Existence of Gas pressure based on the kinetic theory gas molecules move freely and randomly. The gas molecules collide with one another and also collide.

Fluid Mechanics Chapter 10.

Higher Physics – Unit – Density and Pressure.

PRESSURE OF A FLUID Barometer air pressure pressure = height of mercury column.

Forces in Fluids 7:1 Fluids and Pressure Terms Fluid~ any material that can flow and takes the shape of its container Pressure~the amount of force exerted.

Cartesian Diver Buoyancy Vanderbilt Student Volunteers for Science Spring 2005 Training Presentation.

3.2: The Gas Laws.

(c) McGraw Hill Ryerson Fluids Under Pressure Fluids always move from high pressure to low pressure  Fluids under pressure and compressed gases.

Behavior of Gases.

 Pressure is the force pushing down on a surface  Pressure varies with temperature.

Table of Contents Pressure Floating and Sinking Pascal’s Principle

Chapter 14 Preview Section 1 Fluids and Pressure

L 13 Fluids [2]: Statics  fluids at rest  More on fluids.  How can a steel boat float.  A ship can float in a cup of water!  Today’s weather Today’s.

Table of Contents Pressure Floating and Sinking Pascal’s Principle

L 13 Fluids [2]: Statics  fluids at rest  More on fluids.  How can a steel boat float.  A ship can float in a cup of water!  Today’s weather Today’s.

Using the “Clicker” If you have a clicker now, and did not do this last time, please enter your ID in your clicker. First, turn on your clicker by sliding.

Pressure in solids, liquids Atmospheric pressure

L 13 Fluids [2]: Statics  fluids at rest  More on fluids.  How can a steel boat float.  A ship can float in a cup of water!  Today’s weather Today’s.

Unit 1 Lesson 5 Fluids and Pressure

Properties of Air Test Review. Name that Property! Q: Air is less dense than water because the molecules are more spread out. A: 1.It is a mixture of.

Fluids A fluid is anything that flows (liquid or a gas)

PHYSICS – Pressure. LEARNING OBJECTIVES 1.8 Pressure Core Recall and use the equation p = F / A Relate pressure to force and area, using appropriate examples.

$1 Million $500,000 $250,000 $125,000 $64,000 $32,000 $16,000 $8,000 $4,000 $2,000 $1,000 $500 $300 $200 $100 Welcome.

Ch. 3 - Fluids Sec. 2 - Pressure1 Pressure Slide Show #2.

L 13 Fluids [2]: Statics  fluids at rest  More on fluids at rest  How is atmospheric pressure measured?  Today’s weather Today’s weather Today’s weather.

AND THEIR FORCES Fluids. Matter that can flow is called a fluid. “Fluid” does not mean the same thing as “liquid.” Both liquids and gases are called fluids.

Static Fluids AP Physics 2.

Pressure  For every force there is an equal & opposite force - when you push down on the water, the water pushes back on you  The “push” or force per.

Chapter 12: Forces and Fluids

Topic Pressure in liquids and gases Level

Behavior of Gases.

9.1 Fluids Under Pressure Fluids always move from high pressure to low pressure Fluids under pressure and compressed gases are used for a variety of everyday.

Question: Why do camels have big feet?

Sinking and Floating: Buoyancy

Do Now A raft is made of a plastic block with a density of 650 kg/m3, and its dimensions are 2.00 m × 3.00 m × 5.00 m. What is the force of buoyancy on.

What will happen – Why? When the barrier is removed, what will happen and can you explain why?

Particle Model of Matter

Chapter 7 Matter.

PHYSICS – Pressure.

DENSITY AND PRESSURE.

The Atmosphere’s Air Pressure Changes

Junior Certificate Science

Using the “Clicker” If you have a clicker now, and did not do this last time, please enter your ID in your clicker. First, turn on your clicker by sliding.

Pressure-Volume Relationship (Boyle’s Law)

Pressure Chapter 3.3.

Extension and energy transfers

What would be more painful?

 water at 4° C = x 103 kg/m3 SI unit = kg/m3  varies with temperature and pressure Significantly for gases Not much for liquids or solids.

Lecture no 11 & 12 HYDROSTATIC FORCE AND PRESSURE ON PLATES

BEHAVIOR OF GASES.

PASCAL’S PRINCIPLE.

Fluids- Behaviors of liquids and gases

Why does an ice cube float in water?

Cutnell/Johnson Physics 7th edition Reading Quiz Questions

Technologies based on the properties of fluids

1: Pressure depends on density and depth

Presentation transcript:

Year 8 Pressure in fluids

Air pressure and hydrostatic pressure Learning objectives Explain the effects of air pressure State the relationship between depth and hydrostatic pressure Explain the design of dams

Magdeberg spheres

Magdeburg spheres Draw the diagram above Describe what you did Explain your observations

Hydrostatic Pressure

Hydrostatic Pressure What will happen when the fingers are removed from the holes in the tank of water? Give as much detail as possible.

Hydrostatic Pressure How do you explain this?

Hydrostatic Pressure The deepest open circuit scuba dive was accomplished by Pascal Bernabé. The reading on his pressure meter was 3382.5kPa. What depth did he reach?

Dams Why is the dam wall thicker at its base? The dam wall is 10m deep from the water level. The reservoir contains freshwater. Each arrow shows the pressure at metre intervals. Calculate the pressure at each metre interval. Plot a graph showing the relationship between depth and pressure. State the relationship between depth and pressure. A fish is swimming at a depth of 4.6 metres. Use your graph to determine the hydrostatic pressure exerted on the fish.

Air Pressure Air pressure is approximately 100kPa at sea level but it varies plus or minus 5% due to the weather. Warming air in a container causes an increase in pressure. Cooling air causes a decrease in pressure. This is because of changes to the kinetic energy of the air molecules.

Air Pressure A pen cap floats in a plastic lemonade bottle three-quarters full of water. If you squeeze the bottle the pen cap sinks to the bottom. If you then let go of the bottle, the pen cap floats to the surface.

(a) When the bottle is squeezed what, if anything, happens to: (i) the distance between the air molecules inside the bottle? ............................................................................................................1 mark (ii) the distance between the water molecules inside the bottle? (iii) the pressure of the air trapped inside the pen cap? (iv) the volume of the air trapped inside the pen cap? (b) Explain why the pen cap sinks when you squeeze the bottle. ............................................................................................................. ............................................................................................................. 2 marks

Learning objectives State the relationship between height (and depth) and the pressure in fluids Explain the relationship between height and pressure Outline the use of manometers in measuring the pressure in fluids

Task 1 Complete the worksheet to recap some ideas about fluids

Pressure in fluids atmospheric pressure noun the pressure exerted by the weight of the atmosphere, which at sea level has a mean value of 101,325 pascals

Task 1 Complete the worksheet “A question of Pressure”

Manometers