"Playing Basketball" PPT courseware

Description

"Playing Basketball" PPT courseware

Air is a colorless, odorless, transparent gas. Know that air actually exists and air must occupy space.

Air can be compressed and becomes elastic after compression

Other applications of compressed air

Air occupies a certain amount of space, but it has no fixed shape or volume. When pressure is applied to air in a closed container, the volume of the air is compressed, increasing the internal pressure. When the external force is removed, the air will return to its original volume under the action of internal pressure. If there is a movable object in the container, when the air returns to its original volume, the object will be pushed outward by the pressure of the air in the container. This principle is widely used in production and life. For example: if compressed air is put into a ball, the more inflated it is, the harder the ball will be; if compressed air is put into a tire, the tire can bear a certain weight. In large cars, compressed air is used to open and close doors and brakes; hydraulic presses use compressed air to pressurize water; in factories, compressed air is used to drive pneumatic hammers to strike iron; in coal mines, it can drive pneumatic picks to drill holes. Also used in pipelines to transport liquids and granular objects.

Compressed air is generally used as a power source and is widely used.

Drive the cylinder to produce linear motion; drive the pneumatic motor to produce rotational motion; drive the jet element for calculation and control.

Use it to carry certain substances and get the job done. Such as sand blasting; spraying; water spray cleaning; spray painting.

Utilizing its compressible properties, it acts as a buffer and spring. Gas spring; buffer pad, etc.

and derivative applications of the above. For example, the cylinder can be equipped with air bags, air cushions, etc.

Keywords: Basketball teaching courseware, E-education version fourth grade science PPT courseware download, volume 2, fourth grade science slide courseware download, basketball playing PPT courseware download, .PPT format;

For more information about the "Playing Basketball" PPT courseware, please click the "Playing Basketball" PPT tab.

"Playing Basketball" PPT courseware 2:

"Playing Basketball" PPT Courseware 2 Let's talk: Why can basketball bounce? Deflated (biě): cannot bounce up. Insufficient air: cannot bounce high. Fully inflated: bounces very high. Thinking: 1. What has happened to the volume of air in the syringe? 2. The empty space in the syringe...

File Info

Update Time: 2024-10-02

This template belongs to science courseware Fourth-grade science volume 2 of the E-education edition industry PPT template

Preview