"Understanding Several Common Rocks" Rocks and Minerals PPT

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Fourth Grade Science Volume 2, Textbook Edition	pptx	6 MB

"Understanding Several Common Rocks" Rocks and Minerals PPT

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Upload Time: 2024-09-29

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"Understanding Several Common Rocks" Rocks and Minerals PPT

Part One: A closer look at the rocks

What methods did we use to observe rocks in the last lesson?

color shape

Stripes/Patterns

spots size

Smoothness and roughness

severity

odor

Tap gently before smelling

Get to know several common rocks PPT, Part 2: How to identify rocks

Read the introduction and learn about the characteristics of some rocks.

granite

Spotted, composed of black, white, flesh-red or colorless transparent particles. The particles are thick, rough and very hard.

conglomerate

It looks like concrete, made up of gravel or pebbles, and is rough and hard.

limestone

Blue-grey, gray or slightly yellow, fine particles, smooth, hard, often fossilized, bubbling when exposed to hydrochloric acid.

Petrologists often carefully observe the composition and particle composition of rock slices under magnifying glasses and microscopes to make judgments about rock types.

The size and structure of rock particles are also important features for identifying rock types.

Which of the above rock characteristics are the most important? If we only tell one or two characteristics, can others guess what kind of rock it is?

Keywords: Free download of Chinese PPT courseware for the second volume of the fourth grade of the textbook edition, download PPT of understanding several common rocks, download PPT of rocks and minerals, .PPT format;

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

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Rocks and minerals ppt Know several common rocks ppt

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"Understanding Several Common Rocks" Rocks and Minerals PPT