"Generation of Electric Energy" Where does electric energy come from PPT courseware

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"Generation of Electric Energy" Where does electric energy come from PPT courseware

1. Battery

1. Function: It is a device that converts ________ into ______. The battery provides ______.

2. Classification

(1) Chemical battery: It is a device that converts ______ into ______. Chemical batteries are mainly composed of ______, ______ and mushy ______. Chemical batteries are divided into ______, ______, ______, ______, etc. The voltage of commonly used dry batteries is ______.

(2) Battery: The plates of common batteries are made of ______, and the electrolyte is ______. When charging the battery, ______ is converted into ______ and stored in the battery; when used, ______ is converted into ______.

(3) Solar cell: It is a device that converts ____________ into ______. Made with ______ and ______.

(4) Fuel cell: It is a device that generates ______ through ______. The fuel cell is extremely efficient. It uses ______, ______, etc. as fuel, which can reduce ______ emissions and is beneficial to environmental protection.

2. Generator

1. Function: It is a device that converts ____________ into ______.

2. Classification

(1) Thermal power generation: The water in the boiler is heated by the combustion of ______, ______ and other fuels, producing high-temperature and high-pressure water vapor, which drives the turbine impeller to rotate at high speed, thereby driving the generator to rotate and generate electricity. Energy conversion process: ______ of fuel → ______ of water and water vapor → ______ of generator rotor → electrical energy.

(2) Hydropower: Dams and reservoirs are built on rivers, and the water in the reservoir rushes out from the controllable gates and impacts the water turbine. The water turbine drives the generator to rotate and generate electricity. Energy transfer and conversion process: ______ of water → ______ of water turbine → ______ of generator rotor → electrical energy.

(3) Nuclear power generation: It uses the nuclear energy released during ______ to heat water, and uses the high-temperature and high-pressure steam generated from the water as power to drive the steam turbine to rotate, thereby driving the generator to generate electricity. Energy transfer and conversion process: ______→______ of water and steam→______ of generator rotor→______.

Knowledge point 1 Battery

1. As shown in the picture, it is a small plastic flower that can sway continuously in the sun. The solar panels on the surface of the flower pot generate current to drive the motor under light, making the flowers swing left and right. Which of the following descriptions of the energy transformation during the swing of the flower is correct ()

A. Leaves convert light energy into chemical energy

B. Electric motor converts mechanical energy into electrical energy

C. Solar panels convert solar energy into electrical energy

D. The floret converts kinetic energy into chemical energy

2. Insert two different metal pieces into the lemon to make a "fruit battery". Use a voltmeter to measure the voltage of the fruit battery, as shown in the figure. Which of the following statements is correct ()

A. Metal piece B is the positive electrode of the fruit battery

B. Fruit batteries convert chemical energy into electrical energy

C. Fruit batteries convert internal energy into electrical energy

D. Fruit batteries convert electrical energy into chemical energy

3. Xiaogang has an MP3 player. The voltage required for operation is 6 V. If it is powered by dry batteries, ______ dry batteries are needed______.

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For more information about the PPT courseware "Where Does Electric Energy Come From? Generation of Electric Energy", please click the Where Does Electric Energy Come From PPT Generation of Electric Energy PPT tab.

"Generation of Electric Energy" Where does electric energy come from PPT courseware 3:

"Generation of Electric Energy" Where does electric energy come from PPT courseware 3 New knowledge exploration 1. Batteries 1. Batteries convert other forms of energy into electrical energy 2. Batteries provide direct current. The size and direction of direct current do not change with time. The size and direction of alternating current change with time. Time is cyclical...

"Generation of Electric Energy" Where does electric energy come from PPT courseware 2:

"Generation of Electric Energy" Where does electric energy come from PPT courseware 2 1. Battery 1. Dry battery Dry battery is a device that converts chemical energy into electrical energy. There are many types and models. The structure of dry battery The dry battery used daily is a zinc-manganese battery, also called a carbon-zinc battery. Its structure...

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Update Time: 2024-07-29

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