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What theorydid brown suggest to explain the nature of heat?
Heat is the total energy of molecular motion in a substance; temperature is a measure of the average energy of molecular motion in a substance. Heat energy depends on the spee…d of the particles, the number of particles (the size or mass), and the type of particles in an object. Temperature does not depend on the size or type of object. For example, the temperature of a small cup of water might be the same as the temperature of a large tub of water, but the tub of water has more heat because it has more water and thus more total thermal energy.
When a substance is heated, the molecules absorb heat energy and begins to vibrate to and fro thereby slightly expanding the substance.
Men are carnal by nature, in other words they are of the world, putting the pleasures of the world before God. It is when they learn of their true purpose for being upon… this earth that a change comes over them, or they are in the world but not of it.
She really didn't explain things in nature. She explained the human endeavor of hunting. She was the goddess of animals so you could say she explained animals. She and her twi…n brother Apollo spread plagues through cities so you could also say they explained that.
Natural Calamities Natural calamities are the calamities which are inflicted by God, or Nature, on man and his world. At these calamities, the unseen hand wreaks havoc i…n the part of the world it chooses to act upon. On these natural activities of nature no scientific or technological developments can wield any control. They can occur as and when and where nature ordains it. Natural calamities can be of many different kinds, but the similarity in all, is their massive destruction in the area of their occurrence. The natural disasters are of many kinds, they are drought and famine, flood, earthquake, hailstorm and a cyclone. In the wake of all these, in one sweep there is complete devastation and destruction, due to which normal life comes to a standstill. Loss of life is well nigh complete, and belongings of people get lost, blown away or swept away. The scene is one of awe, of some unknown power that appears to wreak some revenge on the people of the area. One feels that, there will never again be life in the area, there will never again come up any construction in the area. But, nature plays its part in this also,and even after the most ghastly disasters, life has come up blooming as ever as before in areas of such devastation. A very touching scene is of a drought effected area. In any country that depends on the annual rainfall for its source of water, if there is no rain, for the water supply, the obvious famine comes in its wake. This condition of getting no rain is called drought, and with it, as its automatic corollary comes famine. For with the scarcity of water there is no vegetation and food scarcity follows. The crops get burnt up with heat, the earth gets parched for water, and all life seems to be cracking in the heat. Just the opposite condition occurs when there is a flood. A flood is another from of a natural calamity. On the one hand, we find men dying due to want of water while on the other, in flood we see them marooned by huge expanses of water. High rise buildings start as if floating in water, men, livestock, and materials get an opportunity of floating, swimming and even drowing. If this flood is accompanied with a storm then there is no panacea for the sufferers. With the impact of the strong breeze, trees get uprooted and there appears no hope for the survival of life. Regarding an earthquake, Oh God, the earth cracks and creeps with the huge solid face of the earth moving light as light as a cradle, moving in a loving soft breeze. However, this cradle of love is no less than a destruction of the highest magnitude, and causes massive destruction as of the other calamities. The earth appears to be crying under the weight of civilization and breaking and cracking in places with an unwarranted speed. The result of this swing like action of the earth is, the occurrence of cracks big and small in different places and, the falling of huge high rise buildings, felling of trees and complete annihilation of life and materials. A hailstorm and a cyclone also result in absolute disaster and breakdown of lige. The latest of such tragedies has been a cyclone in the Gujarat state of India. Trees have been blown off their very roots, and houses and huge buildings have been as if dug out of their very foundation, and all life has been destroyed or dislocated. As far as India is concerned, I feel that, nature has been very kind on the one hand and very cruel yes very cruel on the other. I say this because, not one year goes when there has been no natural disaster. However, when such calamities do occur in India, the entire Indian machinery, Governmental or non-government does fear up to provide succour to the disturbed area. The Government sanctions crores of rupees for the rehabilitation of the people in the area, food and medicines are air dropped and the entire country feels and acts together. However, it is a matter of thought that, even after 50 years of self rule, the Government has not been able to take any concrete steps to avert such natural disasters. For example in Assam every year there is a flood in the River Brahmaputra and then the machinery is geared up to take the people out of the trouble, but, no success has been achieved in averting the disaster. It is to be thought of why we have not been able to avert the calamities which are annual. For if know of a calamity that is to come, we should be able to save ourselves from it. At this juncture, let us analyse why and how these calamities have remained unchecked even when we are so deep into civilization and development. The obvious reasons to my mind are two - one that, we are not able to, and second, we are not sufficiently interested in removing the hazard. I feel the Indian scenario is a combination of the two causes. We are not able to check them and also we are not as serious as we should be in trying to prevent these tragedies. For example in Assam, as just mentioned, every year without fail, there are floods. Though there has been instituted a Brahhmaputra Board that has done some work to clean the river, and increase the stretch of the river bed, the floods come non-stop. This proves another point that, man has no power over the will of nature. Though to-day man thinks that he can do everything and nature is now irrelevant, yet, all his efforts to counter the pangs of nature fall flat and fail. The repeated disasters that befall on earth are a continuous reminder to man that there is always a hand that can undo all that man does. For if this was not true, man would be ruling like a monarch on earth without a fear but, as we all know, this is not so. Nature plays its game off and on and gives pin pricks to this self styled monarch to remind him of his drawbacks and disabilities, and keep him in a balanced state of mind
dont know can u plz tell the answer
How it changes in response to its environment.
convection drives the earths atmosphere, and dictates the distribution of life in the worlds oceans. ;D
Short version; Natural selection is the process by which heritable traits that make it more likely for an organism to survive and successfully reproduce become more common i…n a population over successive generations. It is a key mechanism of evolution.
The nonrandom survival and reproductive success of randomly varying organisms. All organisms are variations. More organisms are born than can possible survive on the resourc…es available. Those organisms that vary in ways that aid their survival and reproduction, over other organisms whose variations do not aid them to do these things, are selected and their genes become well represented in the population while the disadvantageous genes become less well represented. Also the characteristics must be heritable
they spread out because they are moving and float above the cooler air
It's complicated and hard to explain, but I'll try my best. Evaporation occurs when a liquid changes to a gas, but only on the surface of the liquid volume. The gas molecules… transfer heat to the liquid molecules. An unequal distribution of heat causes some liquid molecules to become gas molecules. It is random and uneven. Energy from the sun also spawns evaporation. When evaporation does happen, the molecules that leave the liquid body takes a lot of heat with it, therefor the average temperature of the liquid decreases. Evaporation depends on heat, humidity, and air movement.
Natural selection is one of the two main driving forces of evolution, next to genetic drift. Natural selection is necessary in the harsh environment of Earth, where organism…s are constantly competing for survival and domination. In nature reproductive opportunities are limited, not all organisms will survive to be able to reproduce. In natural selection, any traits that help an organism survive long enough to reproduce will pass these traits on to the next generation. Over time these changes in traits will accumulate, and this is how evolution occurs. Take, for example, two deer. One was born with long legs, and one was born with short legs. Now both of them are trying to escape a lion that is chasing them. Which deer is more likely to outrun the lion and survive? If you said the long-legged deer, you are right. So, the short-legged deer is killed and unable to reproduce. However, the long-legged deer is able to pass on her traits and produce a new generation of long-legged deer. The process continues, driving the evolution of these deer. This is basically what natural selection is.
Substances that have internal movement(gas, liquid, and solids to a certain degree) will have convection currents. The concept is most easily understood in a gas. As gases are… heated their molecules travels faster and faster. The faster they move and the more the kinetic energy involved in the collisions causes the gas to increase in volume. This means that the particles are further apart and therefore the density of the gas decreases. And substances with lower density will rise. This can also be thought of as kinetic and potential energies. As the gas is heated the molecules inside have increased kinetic energy. The increased energy of the molecules allows the molecule to reach higher potential energy levels(which means the molecule can rise). jacquie s has a science test tomorow Hope that helps.
A journey, usually taken for pleasure, visiting places of interest along the route
process by which a particular benefical gene( or set of genes) is reproduced in succeding generations more than other genes.
It doesn't per se. Speciation occurs usually when two gene pools are isolated long enough by geography or by separate selective pressures that one group becomes able to reprod…uce with the other with difficulty, and eventually not at all. Horses can mate with zebras and a few other animals for instance, but produce sterile offspring. Speciation has been observed in nature many times, and forced to occur in the laboratory. Google "instances of speciation" for examples.