"Rocks, Minerals and Us" Rocks and Minerals PPT Courseware

Description

"Rocks, Minerals and Us" Rocks and Minerals PPT Courseware

Uses of Rocks and Minerals

Do you know what rocks and minerals are used for?

What methods can be used to understand what rocks and minerals are used for?

Rocks and minerals are important materials that make up the earth and are also valuable resources for people's production and life. It cannot be regenerated after it is mined, so we must protect it well; use rocks and minerals rationally.

Protect rock and mineral resources

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

The Mineral Resources Law stipulates that mineral resources belong to the state and no organization or individual may exploit them privately.

After-school tasks

Understand what mineral resources our hometown has and how people exploit, utilize and protect them?

practice

1. Fill in the blanks

1. Rocks and minerals are important ( ) that make up the earth, and they are also precious ( ) on the earth. We must protect and ( ) well.

2. There are ( ) kinds of mineral resources that have been discovered in my country. It is one of the few countries in the world with a relatively complete range of mineral resources. Among them, the reserves of more than 20 kinds of minerals, including rare metals, ( ) and ( ), rank among the top in the world.

3. The rocks formed by accumulation over time during a series of movements of the earth are ( ). The rocks formed by the movement of the earth and flowing out during volcanic eruptions are ( ). A rock containing the remains of ancient creatures is ( ).

4. We can study minerals by observing minerals ( ), detecting minerals ( ) and observing ( ).

2. Choice

1. Which of the following statements is correct ( ).

A. Rocks and minerals are inexhaustible.

B. Rocks and minerals are unchanged in nature

C. Rocks and minerals cannot be regenerated after being mined.

2. Among the following rocks, they have different colors and are very hard. They can be used as building materials ( ).

A.Slate B.Granite C.Limestone

3. Which of the following statements is correct ( ).

A. Rocks can only be classified by color

B. Rock formation takes a long time, and we cannot speculate on its origin.

C. Rocks are composed of one or several minerals

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Update Time: 2024-11-20

This template belongs to science courseware Fourth Grade Science Volume 2, Textbook Edition industry PPT template

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