"Crystals under a Magnifying Glass" Micro World PPT Courseware

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"Crystals under a Magnifying Glass" Micro World PPT Courseware

Key points of this lesson:

A. Crystal: Some solid substances have a certain structure inside. If the particles that make up these substances are arranged in a certain spatial order and form a regular geometric shape, this is a crystal.

B. Most solid substances in nature are crystals or composed of crystals.

C. Production of crystals

D. Several common crystals

Like salt, sugar, and MSG, solid substances with regular geometric shapes are called crystals.

How are crystals formed?

Do factories use machines to cut them into this shape?

In fact, some crystals in nature are born from solutions, such as salt crystals obtained by evaporating seawater. Some crystals are formed under certain pressure and temperature, such as mineral crystals formed after volcanic eruptions and magma cool down. We can try to make salt crystals by evaporating water.

test you:

1. Fill in the blanks.

1. The particles of ( ), ( ), ( ), and ( ) are all solids with the shape of ( ). People call such solid substances ( ).

2. Most solid substances in nature are ( ) or are composed of ( ). The shape of the crystal ( ), but they all have ( ). Some are ( ), some are like ( ), and some are like clusters of ( ).

3. Many rocks are made up of ( ). Under the microscope, granite is composed of mineral crystals such as ( ), ( ), ( ), and so on.

4. There are many shapes of crystals, but they all have ( ). The methods of making crystals are ( ), ( ).

judge

1. Most solid substances in nature are crystals or composed of crystals. ( )

2. Generally speaking, the particles of the same substance have roughly the same shape. ( )

3. Crystals in nature have certain rules. ( )

4. Some crystals are very large, and some crystals are very small. ( )

5. All crystals grow slowly under appropriate conditions. ( )

6. Glass, amber and pearls are crystals. ( )

7. Only with the help of a magnifying glass and microscope can we see what the crystal looks like. ( )

8. There are three main mineral crystals in granite: feldspar, mica, and quartz. ( )

9. Glass is made up of crystals. ( )

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"Crystals under a Magnifying Glass" Micro World PPT teaching courseware:

"Crystals under a Magnifying Glass" Micro World PPT Teaching Courseware Part One: Exploring New Knowledge (1) Use a magnifying glass to observe beautiful crystals. Salt crystals under a magnifying glass. Sugar crystals under a magnifying glass. They are all cubes. MSG crystals under a magnifying glass..

"Crystals under a Magnifying Glass" Tiny World PPT download:

"Crystals under a Magnifying Glass" Micro World PPT Download Part One: Observing Beautiful Crystals Observe salt, sugar, alkali noodles, and MSG particles with the naked eye. What do they look like? Using a magnifying glass to observe them, what surprising discoveries do we make? I..

"Crystals under a Magnifying Glass" Tiny World PPT:

"Crystals under a Magnifying Glass" Tiny World PPT Part One Content: Beautiful Crystals We not only have the wonderful world of insects around us, but also a wide variety of material worlds. Have we paid attention to the structure of various substances? If you look at yourself with a magnifying glass...

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Update Time: 2024-06-30

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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