Ppt template of scientific knowledge (scientific knowledge in the fifth grade of primary school)

1. Scientific knowledge in the fifth grade of primary school

1. The strongest muscle in the human body is the tongue.

It is impossible to sneeze with your eyes open.

It is impossible to hold your breath and commit suicide.

Every time you lick the stamp gum, it is equivalent to absorbing110 heat.

Right-handed people live nine years longer than left-handed people on average.

Crocodiles cannot stick out their tongues.

7. Polar bears are left-handed.

8. An ostrich's eyes are bigger than its head; Starfish haven't evolved their heads yet.

9. A flea can jump 350 times its own length, which is equivalent to a person jumping over an American football field.

10. A cockroach with its head cut off can live for 9 days, and the cause of death after 9 days is starvation.

1 1. Giraffes don't cough.

12. Owls are the only birds that can distinguish blue.

13. The whale's heartbeat is only 9 times per minute.

14. On average, an adult is 0.4 inch taller in the morning than at night. Because during the day, the cartilage of the spine

Easily oppressed.

15. We have been drinking water for 300 million years.

16. Chocolate contains a chemical called phenyl. This can be done in your head when you are in love.

A thing).

17. Only 30% people will enlarge and narrow their nostrils.

18. English contains the largest number of words in all languages, with nearly one million words, while German vocabulary is less than180,000 words.

French is even worse, less than 10 thousand words.

19. The sex of an adult eel will change from male to female, and it will change several times in its life.

20. The draft blueprint for the Eiffel Tower covers an area of over 65,438+04,000 square feet.

2 1. According to a law passed in Britain in 1845, suicide is a very serious crime, and the heaviest one can be hanged.

Death penalty.

22. Astronauts can't cry in space, because tears can't flow without gravity.

The length of the chameleon's tongue is twice as long as its own.

24. The people who use toothpicks most often are Americans.

25. Blind chameleons still have the ability to change colors to adapt to their surroundings.

26.27% of American male college students think that life is a meaningless hell on earth.

27. A normal person's eye muscles need to exercise 10000- 15000 times a day on average.

28. The elephant will still stand after death.

29. Some insects can live without their heads 1 year.

30. It took Leonardo da Vinci 12 years to draw the lips of the Mona Lisa.

3 1. When glass is broken, the maximum speed of glass fragments can reach 3000 miles per hour.

32. Cows can supply more milk when listening to music.

Roses picked in the afternoon last longer than those picked in the morning.

34. The tiger shark's embryo has to go through a fierce struggle in the mother's womb, and finally the baby tiger shark can be born alive.

35. A 70-pound octopus can pass through a hole the size of a silver coin because they have no spine.

Beethoven used to wash his face with ice water when he was sitting and writing songs. He believes that this will help his brain to make better things.

37. The stick insects in Indonesia are the largest insects in the world, some of which are 65,438+0 feet long.

38. Men's bodies contain more blood than women's bodies. Usually a man's blood can be as high as 1.5.

Sharon, but women only have 0.875 gallons.

39. The inventor of parachute gave his first parachute jump to a dog.

40. The wing length of a Boeing 747 is exactly the distance of the Wright brothers' first flight.

4 1. A big Japanese crab may be as long as 12 feet.

42. Sharks can only detect one millionth of blood in water.

43. The original meaning of "samba" in "samba dance" is "grinding navel together".

Children grow faster in spring.

45. Do you know how much water from the Amazon River flows into the Atlantic Ocean? In the Atlantic Ocean within 0/00 mile from the estuary/kloc-,the water you drink is still fresh water.

46. Newborn turkeys need parents to teach them how to eat, or they will starve to death.

47. The moon weighs 810 billion pounds.

Bats are the only mammals that can fly.

49. A caterpillar has more than 2000 muscles.

50. Hippos run faster than people.

2. Health Tips (ppt)

Original Publisher: Miao Xin Graphic

Speaker: Ran Longyan Guizhou Provincial People's Hospital Contents 1 Contents of good personal hygiene habits 2 Timing of correct hand washing 3 Steps and methods of correct hand washing 4 How to brush your teeth correctly What personal hygiene habits should children develop? 1, Wash your face in the morning and evening, brush your teeth in the morning and evening, wash your hands before and after meals, wash your feet before going to bed, wash your hair frequently, take a bath frequently, and cut your nails frequently. Hand is the most exposed part of human body. If you don't wash your hands, bacteria can spread easily. Many diseases are spread by dirty hands, so wash your hands to remove bacteria. Do you know why you wash your hands? When should I wash my hands? (1) Wash your hands before and after meals (2) Wash your hands before meals. When should I wash my hands? (3) Wash your hands after work (4) Wash your hands after playing games. Thanks for success. 20 19/6/5 Under what circumstances should you wash your hands? (5) Wash your hands after touching dirty things (6), wash your hands after coming back from public places (7), and wash your hands before taking chopsticks. How to wash your hands correctly (riddle): Brothers are born white, neatly arranged in two rows, and they cut vegetables and rice quickly, so everyone can't do without them. It began to sprout around 6 months, and all grew together around 2 and a half years old. There are 20 * * *, why brush your teeth? How to brush your teeth correctly? Why do you brush your teeth? 1, remove oral dirt and gum * * * 2, reduce bacteria in oral cavity 3, improve disease resistance of gum tissue 4, others: how to brush your teeth correctly, such as normal development and strong bones? Choose a toothbrush with small head and soft hair and fluoride-free toothpaste for children every time. The dosage of toothpaste is the size of peas every time. Steps to brush your teeth correctly 12345 Thanks for watching Thank You Success 2019/6/5+09/5.

3. Collect ppt of natural science knowledge suitable for preschool children.

Safety tip 1. Liquefied petroleum gas cookers should not be placed in bedrooms, offices, balconies, warehouses, auditoriums and other public places to prevent air leakage and fire.

Second, correctly grasp the use of the switch, wait for the fire, don't wait for the fire, remember to turn off the valve and switch after use, and replace the valve in time if it is broken. Don't let children use cookers or play with switches at will.

Third, when using liquefied gas, someone should look after it and stay away from it. Pay attention to adjust the size of the rotor at any time to prevent the soup from overflowing and extinguishing the flame or being blown out by the wind, resulting in air leakage. Fourth, liquefied gas tanks should be upright, not upside down, and cannot be cooked or roasted with fire.

5. If there is air leakage, measures should be taken immediately: open doors and windows, ventilate with a fan (but not an electric fan), and then find the leaking part. Basic knowledge of fire fighting (1) isolation method: this is a method to eliminate combustible materials.

(2) Asphyxiation method: prevent air from flowing into the combustion zone, reduce the oxygen content in the air, and make the fire source go out under the condition of insufficient oxygen. (3) cooling method: spray water or other fire extinguishing agents on the combustible materials to lower the temperature of the combustible materials below the ignition point and force the combustion of the materials to stop; Or spray water and fire extinguishing agent to combustible materials near the fire source to reduce the temperature of combustible materials and avoid the expansion of the fire.

(4) inhibition method. I hope I can help you.

4. How to do the small class science lesson plan color-changing ppt?

Activity goal: 1. Know red, yellow and blue, and match the corresponding bottles according to the color code.

2. Perceive the phenomenon that two colors are mixed into new colors and experience the fun of discovery. Activity preparation: 1. There is a transparent bottle filled with half a bottle of water, and the inside of the bottle cap is coated with red, yellow and blue pigments respectively.

2. Red, yellow and blue markers are fixed on the plastic basket respectively. PPT activity flow: 1. Import the game 1. Teacher: The teacher brought something today. Let's count to one, two, three, please come out! Wow, what's this? Let's see, what's in the bottle? Does this water have color? The teacher concluded that water is colorless and transparent, not white. 2, optimistic, water baby transparent.

Shuibao wants to play games with us. Let's read "Water Baby, Water Baby, Water Baby, Water Baby, Change!" Teacher: Wow, how about the water baby? It will change color! Is it fun? Do you want to play? Second, explore fun Teacher: The teacher has prepared many bottles. Listen, each baby takes a bottle. Let's learn from the teacher and shake the bottle. We should say, "water baby, water baby, change." 1, please take a bottle yourself and shake it vigorously to make it change color.

The teacher encourages the children to work harder and cheer more. ) teacher: "have you changed? What color has it changed? " 2, the color corresponds to the teacher: the water baby wants to rest, please find it a home (corresponding to the frame) Third, interpret the secrets Teacher: How can our bottle change color? Ask a child to come up and try to shake the bottle without pigment, and then change it to a bottle with pigment. Tester: Why can't this change and that can? How strange! The teacher concluded: Haha, actually, the teacher put a secret in the bottle cap. What's in this lid? With paint in the lid, the water baby can change color.

Fourth, the exchange bottle cap senses the change when two colors are mixed together. 1. The teacher has a bottle of water in his hand. Now I want to invite another color to be friends with it. What happens if two colors are added together? Do you want to know? Let's take a closer look.

2. Children exchange bottle caps, try to mix two different colors together and observe the color changes. (1) Guide the children to observe the color of the bottle, and then cover it with different color lids.

(2) After the baby changes the bottle cap, shake the bottle. (3) Teacher: Has the water in the bottle changed? What color did it become? Wow, the color is really interesting. Different colors will become a new color when mixed together.

5. How to make PPT template

Many students will find some templates when doing ppt. A few days ago, when they were doing ppt, they saw a very good ppt template and then used Ctrl+C, but the content copied after Ctrl=V was still the original ppt background color, so they felt very puzzled and puzzled. After careful thinking and practice, they came up with the following method: 1.

Open the target template and click menu-View-Master Slide Master in ppt. At this time, you will see the pictures in the master. 2。 Select the picture in your master and press ctrl+c to copy it; 3。

Open and create a new ppt document; 4。 Click menu-View-Master-Slide Master in the new document; 5。

Press ctrl+v to paste, and you can copy the beautiful ppt master. 6。 Delete your own master, leaving only the pasted template; 7。

Click Menu-View-General to complete the whole process, so that you can successfully copy a template you need and add your own content to the new ppt document. Isn't it simple? Remember to think more and practice more when you encounter problems. According to this step, you can also choose your favorite picture as the main picture of ppt, which can derive more content and learn more.

# # # # 1. Use of templates1. Save our own presentation as a template. If we often need to make presentations with similar styles and layouts, we can make one of them first, then save it as a template, and call for modification directly later. ① After the presentation, execute the "File → Save As" command to open the "Save As" dialog box (as shown in Figure A).

② Press the drop-down button to the right of "Save Type" at the bottom and select "Demo Design Template (*)" from the drop-down list that appears later. Pot) "option.

(3) Naming templates (such as "Common Demos"). Pot "), and then press the" Save "button (see Figure A).

【 Tip 】 When you need to reinstall the system in the future, enter the folder "System Disk: \ Documents and Settings \ Administrator \ Application Data \ Microsoft \ Templates" and save the template file ("Common Demos"). Pot) to another place, reinstall the system, and then copy it to the folder above, and you can use the saved template directly.

【 Note 】 ① The above operations are carried out under windows xp system, so please follow other systems. ② The "Application Data" folder has hidden properties, which need to be displayed before operation.

2. Call the template ① to start PowerPoint2002, execute the "File → New" command, and expand the "New Presentation" task pane (as shown in Figure B). ② Click the "Universal Template" option to open the "Template" dialog box (as shown in Figure C), select the required template and click "OK".

(3) According to the needs of making presentations, modify and set the corresponding slides in the template, and then save them, so as to quickly make presentations with similar styles to the template. [Note] If you switch to the Design Template or Presentation tab in the Template dialog box, you can select the template that comes with the system to design and make a presentation.

Second, the use of the master The so-called "master" is a special kind of slide. It contains placeholders, such as slide text and footers (such as date, time and slide number). These placeholders control the layout elements of the slide, such as font, font size, color (including background color), shadow and bullet style. Masterpieces usually include slide master, title master, lecture master and note master.

Next, let's take a look at the establishment and use of two main masters: slide master and title master. 1. Create a slide master A slide master is usually used to unify the slide format of the entire presentation. Once the slide master is modified, the formats of all slides created by this master will also change, thus quickly unifying the formats of presentations and other elements.

① Start Powerpoint2002 and create or open a presentation. ② Execute the command "View → Master → Slide Master" to enter the "Slide Master View" state, and the "Slide Master View" toolbar will also expand.

③ Right-click the character "Click here to edit the main title style", and select the font option in the pop-up shortcut menu to open the font dialog box (as shown in Figure E). Set the corresponding options and click OK to return.

④ Then right-click "Click here to edit the main text style" and the following characters "Level 2, Level 3 ..." and set relevant formats according to the above step ③. ⑤ Select characters such as "Click here to edit the main text style", "Level 2, Level 3 ...", execute the command "Format → Bullets and Numbers", open the Bullets and Numbers dialog box, set a bullet style, and then confirm to quit, so as to set different bullet styles for the corresponding content.

⑥ Execute the "View → Header and Footer" command, open the "Header and Footer" dialog box (as shown in Figure F), switch to the "Slides" tab, and format the date area, footer area and number area. ⑦ Execute the "Insert → Picture → From File" command, open the "Insert Picture" dialog box, locate the folder where the pictures prepared in advance are located, select the pictures to insert into the master, and locate them in the appropriate position.

⑧ After all modifications are completed, click Rename Template on the slide master view toolbar to open the Rename Template dialog box (as shown in Figure G), enter a name (such as the presentation master), and click Rename to return. Pet-name ruby Click the "Close Template View" button on the "Slide Master View" toolbar to exit, and the "Slide Master" is finished.

2. Create a title master As mentioned above, the first slide in a presentation usually uses the title slide layout. Now let's create a title master for this relatively independent slide to highlight the title of the presentation.

① In the slide master view state, press the Insert New Title Master button on the slide master view toolbar to enter the title master state. (2) According to the operation of "Creating Slide Master" above, set the relevant format of "Title Master".

③。

6. What does a complete PPT template contain?

A complete PPT template mainly includes cover page, table of contents page, content page and end page. The content includes text, pictures, charts, videos, etc.

Among them, the text part has big and small titles and text; The picture part has a background picture and a general picture; As the name implies, a chart is a table or some column charts, pie charts and so on.

Of course, the content of PPT template may be different in different usage scenarios, so it is suggested to make it according to specific application scenarios.

7. The knowledge about the moon ppt is exquisite and must be beautiful.

The moon is not an ordinary planet. This is a modified spaceship. It is much older than the earth. Life takes many forms. Don't look at the whole universe from the perspective of life on earth. Here is a piece of news about the moon.

-1. The origin of the moon is uncertain: there are three theories about the origin of the moon at present. The first hypothesis is that the moon, like the earth, was formed by the same cosmic dust clouds and gases 4.6 billion years ago; The second hypothesis is that the lunar system was thrown away from the earth, and the throwing point later formed the Pacific Ocean. The third hypothesis is that the moon is a single star in the universe, captured by the earth's gravity field when passing near the earth, and surrounds the earth. Most scientists believe the first statement, and a few believe the second statement. However, because astronauts landed on the moon and retrieved a lot of lunar soil, chemical analysis showed that the composition of the moon was different from that of the earth.

The earth is more iron and less silicon, and the moon is less iron and more silicon; There are few titanium minerals on the earth, but there are many moons, which proves that the moon is not separated from the earth. The second argument is untenable.

For the same reason, the first hypothesis is passively shaken, because if the earth and the moon were formed by the same process 4.6 billion years ago, then the composition should be the same. Why is the difference so big? Therefore, scientists have to give up the first statement. There is only a third theory, but if a star from other places flies into the solar system, the gravity of the sun is many times greater than that of the earth. It stands to reason that the moon should fly to the sun by the gravity of the sun, not by the gravity of the ball.

None of the hypotheses put forward by these three "orthodox scientists" can answer all the questions, nor can they stand strict questioning. In fact, today, "Where does the moon come from" is still an unresolved theory in astronomy.

Therefore, anyone can put forward his own views on the origin of the moon, no matter how bizarre, others can't criticize it with any "small science". - .

Distance to the moon is about 380,000 kilometers on earth. The average distance between the sun and the earth is about1.500 million kilometers.

Divided by two stages, we get that the distance from the sun to the earth is about 395 times that from the moon to the earth. The diameter of the sun is about 6.5438+0.38 million kilometers, and the diameter of the moon is about 3,400 kilometers. Divided by two, the diameter of the sun is about 395 times that of the moon.

395 times, what a coincidence. What information does it tell us? Think about it, the diameter of the sun is 395 times that of the moon, but the distance from the sun to the earth is 395 times that of the moon. Then because the distance cancels out the size, these two celestial bodies look like their circles above the earth! Is this phenomenon caused by nature or man? Is there such a coincidence in the universe? Seen from the ground, there are two celestial bodies of similar size, one for day and the other for night. There is no second case in the solar system. The famous scientist Ersimov once said, "From all kinds of data and laws, the moon should not appear anywhere.

He added, "The moon is just big enough to cause an eclipse, but it is still small enough for people to see the corona. There is no reason in astronomy to explain this phenomenon. What a coincidence! " Is it just a coincidence? Some scientists don't think so. Scientist Willian R Shelton said in his book Win the Moon: "In order to make the spacecraft run in orbit, it is necessary to fly in space at the speed of18,000 miles per hour to achieve balance; Similarly, if the moon wants to stay in its current orbit and achieve a balance with the earth's gravity, it needs accurate speed, weight and height.

The question is: such conditions are impossible for natural celestial bodies, so why? But our earth has an unnatural satellite-the moon, which means that as a satellite, the size of the moon is too big compared with its planet earth. Let's look at the following data: the diameter of the earth 12756 km, and the diameter of the satellite moon is 3467 km, which is 27% of the earth.

Mars is 6787 kilometers in diameter and has two satellites. The larger one is 23 kilometers in diameter, which is 0.34% of that of Mars. Jupiter has a diameter of 142800 km and has 13 satellites. The largest one is 5000 kilometers in diameter, which is 3.5% of Jupiter's.

Saturn has a diameter of 120000 km and has 23 satellites. The largest one is 4500 kilometers in diameter, which is 3.75% of Saturn's. Let's have a look. Satellites of other planets are no more than 5% in diameter of their parent stars, while our moon is as big as 27%. After such a comparison, do we find that the moon is really "unnaturally big"?

This information tells us once again that the moon is really unusual. - .

There are also some craters on the earth. Scientists have calculated that if a meteorite with a distance of 10 miles hits the earth or the moon at a speed of 30,000 miles per second (equivalent to the power of 1 10,000 tons of dynamite), its penetration depth should be four to five times its diameter. This is true of craters on earth, but it is very strange on the moon. All craters are "very shallow". The deepest crater on the moon's surface is only 4 miles, but its diameter is 186 miles wide! The diameter is 186 miles, and the depth should be at least 700 miles, but in fact the depth of the Gaglin pit is only 2% of the diameter, which is scientifically impossible.

Why is this happening? Great writers can't explain it satisfactorily, and they don't explain it, because they clearly know that one explanation will overturn all known knowledge about the moon. Because you can only use the hard material structure about four miles below the surface of the moon, meteorites can't penetrate, so all craters are very shallow.

So, what is a hard material structure? - 。