"What is the temperature today?" What will the weather be like tomorrow PPT courseware 2

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"What is the temperature today?" What will the weather be like tomorrow PPT courseware 2

what is the weather

Weather: The comprehensive condition of atmospheric temperature, humidity, air pressure and other factors near the ground in a short period of time.

Weather elements: various weather phenomena such as temperature, air pressure, wind, humidity and precipitation

Weather phenomena: wind, rain, thunder and lightning, etc.

Air temperature: The temperature of the air. That is, the degree of coldness and heat of the local air is the basic element that constitutes the weather.

Tools for measuring temperature: ordinary thermometer, maximum thermometer, minimum thermometer

Unit: Celsius (℃)

When using a thermometer to measure the temperature of a liquid, the correct method is as follows:

1. First observe the measuring range, graduation value and 0 point. The temperature of the measured object cannot exceed the measuring range;

2. After the glass bulb of the thermometer is immersed in the object to be measured, wait for a while until the thermometer's reading stabilizes before taking a reading;

3． When reading, the glass bulb of the thermometer should remain in the object being measured, and the line of sight should be level with the upper surface of the liquid column in the thermometer.

Note: Never shake before measuring temperature.

Louver

⒈It can prevent the sun and rain, and can be ventilated.

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

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

Two basic elements of wind:

1. Wind direction: Wind direction refers to the direction in which the wind blows.

Symbols such as: Dongfeng o——

Measuring Tool: Wind Vane

2. Wind speed: the distance the air flows per unit time.

Units of measurement: meters/second, kilometers/hour

Measuring Tool: Anemometer

Commonly used: wind level indication

discuss:

(1) In daily life, what other methods can we use to judge the direction of the wind?

(2) In daily life, what other methods can be used to judge wind level?

The direction of the wind is pointed by the arrow on the wind vane

Wind direction is the direction the wind is blowing from

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"What is the temperature today?" What will the weather be like tomorrow PPT courseware:

"What is the temperature today?" What will the weather be like tomorrow? PPT courseware. Weather forecast: Day to night: Sunny to cloudy, with short showers in the afternoon; Wind direction: North; Wind force: Level 2, increasing to Level 3-4 in the afternoon. Temperature: maximum 320C, minimum 260C; relative humidity..

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Update Time: 2024-09-18

This template belongs to science courseware E-education edition fourth grade science volume 1 industry PPT template

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