"Materials Around Us" PPT Courseware 3

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"Materials Around Us" PPT Courseware 3

Have we ever observed what materials the objects around us are made of?

Which materials are the most common?

Why do we use them so much?

Materials we know

Identify six common materials. Do we know their properties? Try to describe each of them with appropriate words.

Common ones include metal, wood, plastic, glass, paper, fiber, etc.

Common materials include metal, wood, plastic, glass, paper, fiber, etc.

Metal has a unique luster and is opaque, rich in ductility, thermal conductivity, and electrical conductivity.

The wood is yellow-white, with texture on the surface, not too heavy, can be whittled, and can float on water.

Plastic is very light, will not rust, and has good transparency and wear resistance. easily transformed.

Glass is transparent and is generally used in buildings to block wind and light, but is fragile.

The paper is very thin, used for writing, and relatively smooth.

The fiber is very elastic and can be used to make clothes.

I would like to know

1. What materials are each part of the window made of?

2. Why do different parts of windows need to be made of different materials?

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Update Time: 2024-09-06

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

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