"Light up the little light bulb" electric PPT

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"Light up the little light bulb" electric PPT

Part 1: The structure of a small light bulb

Observe the structure of the small light bulb, guess how the current flows, and try to draw the path of the current.

Observe the structure of the small light bulb and guess how the current flows. Try to draw the path of the current.

Light up the little light bulb PPT, part 2: let the little light bulb shine

Thinking: How can a small light bulb glow?

When current passes through the filament, the small bulb will glow

How can we make charges flow to form an electric current?

① There must be a power supply ② There must be a circuit

Find a way to make a small light bulb light up using a piece of wire and a battery.

A battery is a portable power source. One end of the battery is a copper cap, called the positive electrode; the other end is a zinc shell, called the negative electrode.

A short circuit occurs when these two ends of a battery are directly connected by a wire.

When short-circuited, the battery and wires will become hot in an instant. Not only will the small bulb not be able to emit light, but the battery will also be damaged quickly.

Do a survey of the electrical appliances used in your home.

What common electrical appliances are there in the home?

Which electrical appliances are powered by batteries?

What is the highest monthly electricity consumption in your home?

What is the minimum monthly electricity consumption in your home?

Can you suggest ways to save electricity at home?

Tips for saving electricity at home

Turning off lights.

Unplug electrical appliances promptly when not in use.

Choose energy-saving water heaters, such as solar water heaters. Use electric water heaters as little as possible.

Moderately adjust TV brightness and volume to save electricity.

Avoid using ordinary incandescent lamps and try to use energy-saving lamps or LED lamps.

The washing machine should be filled with enough clothes before use to save water and electricity.

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For more information about the PPT courseware "Electricity Lights up the Little Light Bulb", please click the "Electricity ppt Lights up the Little Light Bulb" ppt tag.

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Update Time: 2024-09-30

This template belongs to science courseware Fourth Grade Science Volume 2, Textbook Edition industry PPT template

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