"Temperature" PPT download

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"Temperature" PPT download

Part 1: Think about it:

1. Have you ever noticed under what circumstances dragonflies fly very low?

In weather with low air pressure and high humidity, dragonflies fly very low because their wings become soft, and it is going to rain.

2. What does the moving of ants often mean?

Ants moving often indicate that the weather will get bad, it will rain heavily, and the ground will accumulate water.

The behavior of many animals is closely related to weather changes.

Temperature PPT, part 2 content: discussion

1. Why do we put thermometers in shutters in weather forecasts?

It prevents the instrument from being exposed to direct sunlight and rain, and allows ventilation to make the temperature more realistic.

2.Why are the shutters painted white?

The white surface can reflect back a large amount of sunlight that hits the louver. The air in the box will not be heated due to the heating of the box wall, so the measured temperature will be more accurate.

3. The height of the louver from the ground is generally about 1.5 meters. Why?

Because the temperature changes at this height are relatively stable, and this height is the range of general human activities, it can truly reflect the temperature of the air.

4. In which direction does the shutter open?

Orient to the north to prevent direct sunlight.

Temperature PPT, part 3: Benefits of shutters:

⒈ It can prevent the sun and rain and provide ventilation.

⒉ The sunlight inside the louver box cannot be exposed directly, and the thermometer reading is more consistent with the actual temperature.

⒊ The temperature fluctuation inside the louver box is smaller than that outside the box.

Temperature and people’s lives

1. When summer comes, what methods are commonly used at home to resist high temperatures? When winter comes, what methods are commonly used at home to keep out the cold?

For example: use methods such as sprinkling water, opening windows at night for ventilation, closing windows during the day, and using air conditioning to resist high temperatures.

For example: Wear more clothes, use heaters and other methods to keep out the cold.

2. What are the dangers of high temperature and severe cold? What precautions can be taken?

Harms include: low temperature causing freezing damage to crops, affecting shipping, etc.

Use methods such as tying straw ropes to tree trunks and covering crops with plastic films to resist the severe cold.

Temperature PPT, part 4 content: Summary:

1. What is the weather?

1. The comprehensive condition of atmospheric temperature, humidity, air pressure and other factors near the ground in a short period of time is called weather. Such as: wind, rain, thunder and lightning, etc.

2. Weather elements: temperature, air pressure, wind, humidity, precipitation.

2. Temperature

1. Measurement method: Thermometer inside the shutter

2. The hottest time of the day: 2 p.m.

3. The most comfortable temperature for the human body is about 22℃.

Temperature PPT, the fifth part: fill in

1. Weather refers to the ________, ______, air pressure and other factors near the ground in a short period of time.

2. Wind, rain, thunder, etc. all belong to __________.

3. The main elements that make up weather are ____, ______, wind, humidity and ______.

4. Temperature refers to the ____ of the air. It tells us the ________ of the local air and is the _________ that constitutes the weather.

The tool is _______ and the unit is ___________.

Keywords: Zhejiang Education Edition eighth grade science PPT courseware free download, temperature PPT download, .PPT format;

For more information about the "Temperature" PPT courseware, please click on the Temperature ppt tab.

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"Temperature" PPT courseware:

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"Temperature" PPT:

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Update Time: 2024-11-22

This template belongs to science courseware Zhejiang Education Edition Eighth Grade Science Volume 1 industry PPT template

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