"Rocks, Minerals and Us" Rocks and Minerals PPT

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Fourth Grade Science Volume 2, Textbook Edition	pptx	6 MB

"Rocks, Minerals and Us" Rocks and Minerals PPT

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Upload Time: 2024-10-19

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"Rocks, Minerals and Us" Rocks and Minerals PPT

Part One: Uses of Rocks and Minerals

People use rocks and minerals extensively in production and life. Can we tell their uses?

Apes used rocks to make tools.

Scientists use fossils to study changes in Earth's motion.

Stones can be used to build houses, pave roads, and build embankments.

Ore can smelt metal.

Rocks, Minerals and Us PPT, Part 2: Protecting Rocks and Mineral Resources

Rocks and minerals are important materials that make up the earth and are also valuable resources for people's production and life. Once they are mined, they cannot be regenerated, so we must protect and rationally utilize rocks and minerals. Mineral resources belong to the state and no organization or individual may exploit them privately.

my country has discovered 171 kinds of minerals and is one of the few countries in the world with a relatively complete range of minerals. Among them, the proven reserves of more than 20 minerals, including rare metal ores, tungsten ores, and tin ores, rank among the best in the world.

Understand what mineral resources there are in your hometown and how people exploit, utilize and protect them.

Keywords: Free download of Chinese PPT courseware for the second volume of the fourth grade of the textbook version, rock minerals and us PPT download, rock and mineral PPT download, .PPT format;

For more information about the PPT courseware "Rocks and Minerals Rocks Minerals and Us", please click the Rocks and Minerals ppt Rocks Minerals and Us ppt tag.

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Update Time: 2024-10-19

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"Rocks, Minerals and Us" Rocks and Minerals PPT