"Understanding Buoyancy" Buoyancy PPT Courseware 2

"Understanding Buoyancy" Buoyancy PPT Courseware 2
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"Understanding Buoyancy" Buoyancy PPT Courseware 2

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"Understanding Buoyancy" Buoyancy PPT Courseware 2

learning target

1. Know what buoyancy is;

2. Through experimental exploration, realize that objects immersed in liquid or gas are affected by buoyancy;

3. Know the causes of buoyancy.

Buoyancy: An object immersed in a liquid or gas is pushed upward by the liquid or gas.

Direction of buoyancy: vertically upward

Causes of buoyancy

The difference in pressure between the upper and lower surfaces of an object is the buoyancy force exerted by the liquid on the immersed object.

F float = F up - F down

The magnitude of buoyancy has nothing to do with depth

Note: When there is no liquid on the lower surface of the object (or it is tightly connected to the bottom), ____ buoyancy.

For example: a bridge pier standing on the river bed; a foot stuck in the mud of the river.

Class exercises

1. A stone weighs 5 N. Hang the stone on the lower end of the spring dynamometer and immerse it in a certain liquid. At this time, the spring dynamometer indicates 2 N, then the stone is subject to the buoyancy force of the liquid. for __N. The direction of the buoyancy force______, the object exerting the force

It is _______ the effect of ______ buoyancy when the stone sinks in the liquid (optional "suffer" or "not").

Class summary

1. Understand buoyancy:

1. Definition of buoyancy: An object immersed in a liquid (or gas) is pushed upward by the liquid (or gas), which is called buoyancy.

2. Direction of buoyancy: always vertically upward.

3. Buoyant force exerting object: liquid or gas.

4. Measure buoyancy by weighing method.

2. Causes of buoyancy:

The difference between the upward and downward pressure of a liquid (or gas) on an object.

Formula: F float = F up - F down

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For more information about the "Buoyancy Understanding Buoyancy" PPT courseware, please click the Buoyancy ppt Understanding Buoyancy ppt tag.

"Understanding Buoyancy" Buoyancy and Lift PPT Courseware 2:

"Understanding Buoyancy" Buoyancy and Lift PPT Courseware 2 1. What is Buoyancy Activity 1: Compare the gravity of a metal block in air and water Design experiment: As shown in the figure, use a spring dynamometer, a block, a thin wire, a beaker, and water and other equipment, compare the springs of objects in air and water..

"Understanding Buoyancy" Buoyancy and Lift PPT courseware:

"Understanding Buoyancy" PPT courseware on buoyancy and lift. Experience buoyancy. What does it feel like when an empty mineral water bottle with a tight cap is pressed into the water? An object immersed in a liquid is pushed upward by the liquid. An object immersed in a gas is pushed upward by the gas. Consolidation and practice 1..

"Understanding Buoyancy" Buoyancy PPT courseware:

"Understanding Buoyancy" Buoyancy PPT courseware Research purpose: Are objects sinking in the water still affected by buoyancy? (1) Explore the buoyancy of liquids. Question (1) How much gravity is exerted on the object? Does the gravity decrease during the sinking process? Why? (2) It will sink..

File Info

Update Time: 2024-11-04

This template belongs to Physics courseware Shanghai Science Edition 8th Grade Physics industry PPT template

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