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lab activity physical science 10 em fa1

By Rakesh nithin

physical science fa 1 for ts 10th class

Does the sun lose weight over time?

 * Why? What? How? πŸ€” *  Question: *Does the sun lose weight over time? * Answer:                         700 million tons of hydrogen is transformed into helium every second in the sun. As a result, the Sun's mass decreases over time. The four hydrogen atoms are converted into a helium atom by nuclear fusion in the Sun's space. The mass of this single helium atom is less than the mass of four hydrogen atoms. Thus the conversion of money into energy can be calculated using the equation E = mc by Albert Einstein. Where m is the mass lost, but c is the speed of light in a vacuum. Thus the sun is losing five million tons of weight every second. Although it may seem large to us, it is only 0.01 percent of its mass compared to the lifespan of the Sun!            πŸ’¦πŸ‹πŸ₯πŸ¬πŸ’¦Does the sun lose weight over time?Does the sun lose weight over time?Does the sun lose weight over time? ...

Do insects tolerate cold?

* Why? What? How? πŸ€”  ΰ°ͺ్ΰ°°ΰ°Ά్ΰ°¨ * Question: * During the summer, dogs stick out their tongues and bark. Why? Answer:               Even if the ambient temperature is high during the summer ... the body temperature of humans and animals should be constant. Many systems work to keep the temperature in the human body from rising. The most important of these is the skin ... Sweat comes to the surface of the body through the sweat glands in it. The sweat constantly evaporates and absorbs heat from the body to dry out ... so the body cools down. But dogs, like dogs, have a very small number of sweat glands so they do not sweat much. Therefore, their body temperature increases due to the influence of the environment. The dog thus opens its mouth and sticks out its tongue and panting. This keeps the body temperature constant.         πŸ’¦πŸ‹πŸ₯πŸ¬πŸ’¦ * Why? What? How? πŸ€”  ΰ°ͺ్ΰ°°ΰ°Ά్ΰ°¨ * Question: * Do insects tolerate cold? * Answer:  ...

Some trees are cool but not all .why?

* Why? What? How? πŸ€”  Question:                          It is much colder under some trees. To make   that difference in the shade of the trees?  Answer:                   If there is shade under almost all the trees we get cold feeling in summer. Depending on the size of the leaves on the tree and the thickness of the branches, dense or thin shadows may form. Achieving different levels of cooling under different trees is affected not only by the intensity of the shade but also by how high the leaves of those trees are on our heads and the amount of water received by those trees. If the alleys between the leaves and between the branches are good, the shade intensity will be less and the coolness will be less. If the leaves of the trees are too high on the head, the feeling of coolness will be less due to the hot air around us repeatedly touc...

Timeline- How do we know?

Question: * Timeline- How do we know?  Answer:  Ugadi is the first festival among the Telugu festivals. This is the lunar year of Telugu people. Let us know what is this lunar calendar and how the Telugu calendar is divided Ugadi means the beginning of the new year. We are currently celebrating this Ugadi festival on Chaitra month Shuddha Padhyami. There is a long history to know how this Chaitra Shuddha Padyami came to be. The source of that history - Adi Man. The sky, the stars, the sun, the moon, and so on. Early man observed that during his life course he would be in the light for some time and in the dark for some time, and the same situation would happen again and again. In the light I saw a large image with a bright light in the sky, in the dark a number of twinkles in the sky, and an image with a white light rising at times, and I noticed the same thing happening again and again. With some intellectual development in this course, man identified the time of light as day...