| Category | Format | Size |
|---|---|---|
| Fourth Grade Science Volume 2, Textbook Edition | pptx | 6 MB |
"The Composition of Rocks" Rocks and Minerals PPT
Description
"The Composition of Rocks" Rocks and Minerals PPT
Part One: Beautiful Granite
Use a magnifying glass to carefully observe the granite and see what kinds of particles make up the granite? What are they?
Although granites come in a variety of colors, they are mainly composed of three minerals: quartz, feldspar, and mica.
Observe the three mineral specimens of quartz, feldspar, and mica. What are the characteristics of each of them?
Quartz crystal is a columnar or long column with a sharp angle at one end. It has various colors due to the mixing of different impurities. It has a glass luster or fat luster and a hard texture.
Feldspar crystals are often columnar or plate-shaped, fine-grained, and are fleshy red, light yellow, white or off-white in color. They are the most common mineral in the earth's crust, accounting for 60%.
Mica is in the form of flakes or scales, and its color varies with the chemical composition, such as black, brown-red, white, light gray, etc., with glass luster and pearl luster.
Composition of rocks PPT, part 2 content: common minerals
Nearly 4,000 minerals have been discovered in the world. What other minerals do you know? What is it used for?
What do we know about minerals?
What properties and uses do they have?
What is the difference between minerals and rocks?
In what ways can we observe and describe minerals?
Keywords: Free download of Chinese PPT courseware for the second volume of the fourth grade of the textbook version, PPT download of the composition of rocks, PPT download of rocks and minerals, .PPT format;
For more information about the "Rocks and Minerals Composition of Rocks" PPT courseware, please click on the "Rocks and Minerals ppt Composition of Rocks ppt" tag.
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Update Time: 2024-07-02
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