"Conversion and Conservation of Energy" Heat and Energy PPT Courseware

Description

"Conversion and Conservation of Energy" Heat and Energy PPT Courseware

teaching objectives

1. Know the law of conservation of energy

2. Can give examples of energy conservation in daily life

3. Be able to analyze physical phenomena from the perspective of energy conservation

1. Various forms of energy

What do you know about energy? Or do you have any questions?

chemical energy

1. The combustion of fuel is a chemical change. The light and heat generated during combustion come from the chemical energy stored in the fuel.

2. Food also has chemical energy. The energy consumed in people’s lives and work comes from the chemical energy stored in food.

2. Energy conversion and transfer

In nature, energy can not only be transferred from one object to another, but various forms of energy can also be converted into each other.

Conversion of energy Various forms can be converted into each other

Food has chemical energy, and our bodies convert this chemical energy into internal and mechanical energy necessary to sustain life.

Converting wind energy into electricity

Gravitational potential energy is converted into electrical energy

Exercise: Point out how energy is transformed in the following phenomena?

When the electric fan works, ____ energy is converted into ____ energy.

A lit candle's ____ energy is transformed into ____ energy.

Rubbing your hands together ____ energy is converted into ____ energy.

Incandescent lamps emit light that converts ____ energy into ____ energy

Meteors become hot as they pass through the atmosphere. ____ energy is converted into ____ energy. Drag a piece of ice on the ground and the ice will melt. ____ energy is converted into ____ energy.

When a wire is bent repeatedly, the temperature of the bent part will increase, and ____ energy is converted into __ energy

When a match is struck, ____ energy is converted into ____ energy;

The ____ energy generated by hydropower stations is converted into ____ energy;

The work done by water vapor on the piston ____ energy is converted into ____ energy;

3. Law of conservation of energy

Energy is neither destroyed nor created, it is only transformed from one form to another or transferred from one object to another, while the total amount of energy remains the same.

The law of conservation of energy: one of the most universal, most important, and most reliable laws of nature

Summary of this lesson

1. Various forms of energy

2. Law of conservation of energy

Energy is neither destroyed nor created, it is only transformed from one form to another or transferred from one object to another, while the total amount of energy remains the same.

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"Conversion and Conservation of Energy" Heat and Energy PPT Courseware 2:

"Conversion and Conservation of Energy" Heat and Energy PPT Courseware 2 Various forms of energy can be converted into each other. Mechanical energy is converted into internal energy. Mechanical energy is converted into electrical energy. Electric energy is converted into mechanical energy. Children slide on the slide. Due to friction, ____ is converted into ____. Plant growth Enable ___ to transform...

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"Conversion and Conservation of Energy" Utilization of Internal Energy PPT Courseware 5 Learning Objectives 1. Know the law of conservation of energy. 2. Be able to give examples of energy conservation in daily life. 3. Be able to analyze physical phenomena from the perspective of energy conservation. Self-Study Guide 1 1. Read P27 of the textbook...

"Conversion and Conservation of Energy" Utilization of Internal Energy PPT Courseware 4:

"Conversion and Conservation of Energy" Utilization of Internal Energy PPT Courseware 4 Teaching Objectives 1. Know the law of conservation of energy 2. Be able to cite examples of energy conservation in daily life 3. Be able to analyze physical phenomena from the perspective of energy conservation Chemical energy 1. Fuel Combustion is a chemical change..

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Update Time: 2024-11-22

This template belongs to Physics courseware Lu Jiao Edition Ninth Grade Physics Volume 2 industry PPT template

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