Category	Format	Size
Fourth-grade science volume 2 of the E-education edition	pptx	6 MB

"Playing "Submarine"" PPT courseware

Author: ︶￣Ｓs°╮

Upload Time: 2024-11-09

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Description

"Playing "Submarine"" PPT courseware

Submarines, like fish, can float up and down in the water, and can also travel in the water.

How can fish float and sink in the water?

It turns out that this small swim bladder can help the fish float up and sink.

When the fish is about to float up, its swim bladder slowly fills with air. The swim bladder swelled, and the fish swung back and forth, then floated up. When the fish is about to sink, the air in its swim bladder slowly releases. The swim bladder shrank, the fish's body became slightly smaller, the fish swayed back and forth, and then sank.

Submarine hatches, doors and windows can be sealed. After sealing, there is no gap in the hull of the boat, and it looks a bit like a fish from the outside. There is a particularly large "cabinet" in the submarine. The "cabinet" is equivalent to the swim bladder in the fish's belly. When it is filled with water, the submarine will sink. When the water is drained out, the boat will become lighter and it will float up.

The "cabinet" in the submarine is equivalent to the swim bladder in the belly of the fish. When it is filled with water, the submarine sinks. When the water is drained out, the boat becomes lighter and it floats up.

Keywords: Playing Submarine teaching courseware, download the science PPT courseware of the second volume of the fourth grade of the E-education edition, download the fourth grade science slide courseware, download the PPT courseware of Playing the Submarine, .PPT format;

For more information about the "Playing Submarine" PPT courseware, please click the "Playing Submarine" ppt tag.

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Update Time: 2024-11-09

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

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Play submarine ppt

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"Playing "Submarine"" PPT courseware