Why do you say it's cool under a big tree? I hope in terms of biology
Because under the sun, the water in the tree will evaporate through the leaves, which is called transpiration, and this process will absorb part of the heat of the air, and under the tree, the leaves can block the sun, of course, it will feel cool
RELATED INFORMATIONS
- 1. Why do you say "cool under a big tree"? What's the scientific reason?
- 2. As the saying goes, "it's good to enjoy the cool under a big tree."
- 3. Mom, dad and Xiao Li are 72 years old this year. Five years ago, they were 58 years old. How old is Xiao Li this year?
- 4. Xiao Li is 27 years younger than her mother, and her father is 4 years older than her mother. The total age of the three is 82. How old is Xiao Li this year?
- 5. His father's age is 9 times that of XiaoCong, and his mother's age is 7.5 times that of XiaoCong. His father is 6 years older than his mother, and XiaoCong is a child this year______ I'm 40 years old
- 6. Xiao Li is 6 years old, and her father is 36 years old. How many years later, her father's age will be three times that of Xiao Li?
- 7. His father's age is 9 times that of XiaoCong, and his mother's age is 7.5 times that of XiaoCong. His father is 6 years older than his mother, and XiaoCong is a child this year______ I'm 40 years old
- 8. His father's age is 9 times that of XiaoCong, and his mother's age is 7.5 times that of XiaoCong. His father is 6 years older than his mother, and XiaoCong is a child this year______ I'm 40 years old
- 9. On this year's teacher's day, Xiao Hong made a semicircular greeting card for her teacher with colored cardboard. For the sake of beauty, she bought a rope to stick it on the outside of the card It took 41.12 meters of rope to make this card. How many square centimeters of cardboard did he use?
- 10. On teacher's day this year, Xiao Hong made a semicircle for her teacher with colored cardboard. In order to make it beautiful, he bought colored rope to glue it to the outside of the card, It took 41012cm long colored rope to make this card. How many square centimeters of colored cardboard did he use? The content is clear, neat and clear Wrong! It's 41.12cm
- 11. (Mudanjiang, 2013) as the saying goes, "it's good to enjoy the cool under a big tree", which shows that () A. Biological impact on the environment B. biological adaptation to the environment C. environmental change biology D. environmental restriction biology
- 12. Why is it good to enjoy the cool under the big tree? Explain from the physical point of view One of the points is that the evaporation of water on the surface of leaves needs to absorb heat and play a cooling role. Our teacher also said that it is related to air flow. I didn't hear it clearly. Please help me to explain the relationship between enjoying the cool under the big tree and air flow
- 13. Why is it so cool under a big tree?
- 14. Explain the reason of "a big tree is good for enjoying the cool under the ground" with physics knowledge Explain with the change of state of matter
- 15. Explain "cool under big tree" with physics knowledge Mainly speaking, not too much
- 16. What is the physical knowledge of "enjoying the cool under a big tree"?
- 17. One day, Xiao Li walked to the Cultural Palace, 75 meters per minute when she went there, and 60 meters per minute when she returned. Xiao Li spent 36 minutes on the way back and forth. How many meters is it from Xiao Li's home to the cultural officer?
- 18. As shown in the figure, known angle AOB = 90 degrees, angle AOC is acute angle, OD bisecting angle BOC, OE bisecting angle AOC, calculate the degree of angle doe
- 19. As shown in the figure, the known angle AOB = 90 degrees, the angle AOC is the acute angle. Od bisecting angle AOC, OE bisecting angle BOC. Calculate the degree of the angle doe? When the angle AOB = m degrees, the angle doe? Degree
- 20. The angle AOB = 80 degrees, OC is a ray outside the angle AOB, OD bisects the angle BOC, OE bisects the angle AOC, and the angle DOE needs geometric language There is another problem If the angle AOB = 80 degrees is changed to angle AOB = a degrees, what is the law obtained by finding ∠ doe?