"Understanding Rocks" PPT download

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Qingdao edition third grade science volume 2, understanding rocks PPT download

Part One: Learning Objectives

1. Able to use simple instruments to observe the main characteristics of rocks.

2. Know the characteristics of rock such as hardness, whether it reacts with acid, texture, shape, particle size, etc.

How to study rocks

1. Observe the colors inside and outside the rock. (What colors are they?)

2. Observe the structural bedding of rocks. (What are the characteristics of their structures? Are they layer-by-layer or granular? Are they composed of the same type of particles or different types of particles? Are they coarse-grained or fine-grained?)

3. Observe the hardness of the rock. (Four hardness levels can be used to express the hardness of rocks: very hard, very hard, relatively hard, and soft. After the stone is carved with a knife, a copper key, or a fingernail, the level can be determined)

4. Observe the reaction between rocks and acid. (Put a few drops of hydrochloric acid on the rocks to see if they bubble.)

5. Observe the texture of the rock. (Pull the stone on the ground or put it in water to see the degree of bubbling, etc. to understand the density and softness of the stone)

Understanding Rocks PPT, Part 2: Methods of Testing Rock Hardness

The nails that can be carved are softer.

Fingernails can't carve it, but copper keys that can carve it are harder.

A copper key cannot be carved, but a knife can be carved because it is very hard.

If a knife cannot cut it, it is very hard.

Research Notes

1. Pay attention to safety when using a knife.

2. Never splash hydrochloric acid on your skin or clothes. Use a dropper to take it.

Understanding rocks PPT, part 3: after-class exercises

1. Fill in the blanks.

1. Common rocks are granite, _____, _____, limestone, _____.

2. The main minerals that make up granite are _____, _____, and _____.

3. Sandstone has a _____-shaped structure and shale has a _____-shaped structure.

4． The gas produced when limestone encounters hydrochloric acid is _____.

2. A fair little judge.

1. Granite bubbles when exposed to hydrochloric acid. ( )

2. Marble bubbles when exposed to hydrochloric acid. ( )

3. Reddish brown or gray, thin layered structure, shale with lower hardness ( )

Keywords: Qingdao version third grade science PPT courseware for the second volume free download, understanding rocks PPT courseware, .PPT format;

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"Understanding Rocks" PPT courseware:

Qingdao edition of the second volume of third grade science, understanding rocks PPT courseware, part one content: Content classification Warm reminder: 1. Choose your favorite rocks (at least 4) and carefully observe their main characteristics; 2. Be careful when dripping dilute hydrochloric acid Be careful, rocks that have been dripped with dilute hydrochloric acid...

"Understanding Rocks" PPT:

Qingdao edition third grade science volume 2, understanding rocks PPT, part one content: learning objectives: 1. Knowledge goal: Be able to initially understand rocks through observation and use of simple tools. Know that rocks have characteristics such as hardness, reaction to acid, texture, shape, and structure. 2. ..

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Update Time: 2024-11-22

This template belongs to science courseware Qingdao Edition Third Grade Science Volume 2 industry PPT template

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