"Snail (1)" Animal PPT

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"Snail (1)" Animal PPT

Part 1: Observing the body of the snail

What does a snail's body look like?

The snail has a soft body and a spiral shell, which comes in various shapes and sizes.

The spirals on a snail's shell rotate in different directions.

Gently touch the snail's body with a stick or pencil and observe how the snail reacts.

Snail PPT, Part 2: Observing the movement of snails

What part of the body does a snail use to crawl?

A snail crawls on its abdomen. The abdomen of the snail is the snail's feet, which are called gastropods.

Snails are gastropods, and their abdomens are their feet. They crawl by peristalsis of their abdominal muscles. When you see through the glass, there will be a wave pattern on the abdominal feet when the snail is moving. That is because the snail moves forward in a wave manner. Put the snail in the palm of your hand and you will feel like it is being sucked up.

When a snail is moving, its body will secrete a sticky liquid to moisten its abdomen and feet, so that they will not be injured by rough and sharp things, and it can also help them grasp objects. The snail relies on this mucus to slowly move towards the object. It can climb forward and climb up and down tree trunks and walls.

According to scientists, the fastest speed a snail can crawl is about 12.2 meters/hour. Nowadays, people often use the metaphor of snail crawling to describe a slow speed.

Snail PPT, part 3: Let’s raise snails

In a breeding box or jar, first spread a layer of coarse sand, then a layer of moist soil, and then put in a few branches and fallen leaves to form an environment for snails to live in, and we can raise snails. .

Feed the snails with vegetable leaves, cucumbers, etc. every evening, and dispose of the food residues the next morning.

Observe the living conditions of snails every day and keep observation records.

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For more information about the "Animal Snail" PPT courseware, please click the Animal ppt Snail ppt tag.

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Update Time: 2024-09-16

This template belongs to science courseware Third Grade Science Volume 1, Textbook Edition industry PPT template

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