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Authoritative PPT Summary
"The Color of the Sea" PPT download
Part One: Information Treasure Bag
The color of seawater is mainly caused by the optical properties of seawater, that is, the absorption, reflection and scattering of sunlight by seawater.
preview check
Think about it: What does the text mainly talk about?
"The Color of the Sea" is an explanatory essay. Through the description of the different colors of the oceans everywhere, it shows that the color of the sea is actually full of changes.
word paradise
bohai sea love dark brown swimming
Paint goes away and dissolves
The color of the sea PPT, part 2 content: detailed explanation of the text
Read the text silently and see what questions the author raises?
What color is the sea?
To this question, it is estimated that most people will answer: blue
What blue? What kind of blue? Does it have to be blue?
Why does the author estimate that most people think the sea is blue?
Because the color of seawater is mainly caused by the optical properties of seawater, that is, the absorption, reflection and scattering of sunlight by seawater. We all know that sunlight is composed of seven colors of light: red, orange, yellow, green, cyan, indigo, and violet. The wavelengths of the seven colors of light vary from red to purple, and the wavelengths gradually shorten. Among them, red light, orange light, and yellow light with long wavelengths have strong penetrating ability and are most easily absorbed by water molecules; blue light and violet light with shorter wavelengths have weak penetrating ability and are most easily scattered and reflected when encountering pure seawater. And because human eyes are very insensitive to purple light, they often turn a blind eye, but are more sensitive to blue light. As a result, the ocean we see appears azure or dark blue.
1. Bohai Sea
Yellow-brown is common in shallow seas, probably because the beaches there are golden. In the shallow sea, the sand turns yellow because of the rising and receding tides, wind and waves, and swimmers running around and turning it up. When encountering strong winds and waves, it turns yellow-brown.
2. Paracel Islands
It was a deep blue, with a golden glow reflected in the sunlight. Flying fish fly on the sea, warships sail on the sea, and the waves are solemn and silent.
3. Sicily
The sand on the beach is all white, and the sea water is sky blue, crystal clear and bright. Swimming in such water, you can see all the shapes of the white sand on the bottom of the sea through the sea water, which seems to be more clear than without water.
4. Monaco
The sea there is also sky blue, but it seems darker than the sea near Sicily.
No matter what color the sea is, if you hold it in your hands, it will be colorless and transparent. It seems that there is no difference between this sea and that sea, lakes and rivers, they are all water. The melted salt is also colorless, and the waves are so white that it's so white that it's intoxicating.
The color of the sea PPT, the third part of the content: summarize the theme
"The Color of the Sea" is an explanatory essay. Through the description of the different colors of the ocean, it shows that the color of the sea is actually full of changes. It uses his own personal experience to tell us this fact, which makes it real and credible.
Tips on writing
This article raises questions, proves it with examples, and finally answers "Seawater is colorless." Every word and every sentence is closely related to the topic "The Color of Sea Water", and the reading is clear and coherent, true and credible.
The Color of the Sea PPT, Part 4: Expansion and Improvement
What gains have you made in terms of expression? What enlightenment does it have for us to know and understand the world?
spiritual enlightenment
Cultivate the scientific spirit of seeking truth from facts and a rigorous and realistic scientific attitude.
The color of the sea PPT, part 5: practice in class
1. Compare and form words
Narrow ( ) steep ( ) kudzu ( ) velvet ( )
Press ( ), Qiao ( ), Rest ( ), Hold ( )
2. Read the pinyin and write the words.
zhàn lán sù rán qǐ jìng
( ) ( )
hàn máodǎo shù xīn zuì
( ) ( )
Keywords: Free download of the Chinese PPT courseware for the sixth grade in the first volume of the E-education edition, download of the Color of the Sea PPT, .PPT format;
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"The Color of the Sea" PPT courseware:
"The Color of the Sea" PPT courseware Part 1: Introduction of new lessons Mastering new words b di h yǒng qī ma rng Bo Dai Brown Swimming Paint Well Melting Who knows why most people think the sea is blue? Because the color of seawater is mainly determined by the optical properties of seawater..
"The Color of the Sea" PPT:
"The Color of the Sea" PPT Part One: First Reading Perception Knowledge Link Yellow Sea my country's Yellow Sea looks yellow-green. This is because a large amount of sediment carried by the Yellow River in ancient times dyed the sea water yellow. Red Sea The Red Sea between Asia and Africa, because of its very high water temperature,...