How does moisture get into the air? Heat from the Sun causes water to evaporate from the surface of lakes and oceans. This turns the liquid water into water vapor in the atmosphere. Plants, too, help water get into the atmosphere through a process called transpiration! Water can also get into the atmosphere from snow […]
Which microscope is best used for observing viruses?
Which microscope is best used for observing viruses? Electron microscopy Can viruses be observed using a light microscope? Standard light microscopes allow us to see our cells clearly. However, these microscopes are limited by light itself as they cannot show anything smaller than half the wavelength of visible light – and viruses are much smaller […]
What is the object distance of a concave mirror?
What is the object distance of a concave mirror? focal length object distance concave mirror positive positive convex mirror negative positive converging lens positive positive diverging lens negative positive Who gave the lens formula? Thin Lens Formula — from Eric Weisstein’s World of Physics. in 1693 (Steinhaus 1983, p. 301). Is object distance positive or […]
What is the law of multiple proportions explain with example?
What is the law of multiple proportions explain with example? Law of Multiple proportion states that when two elements combine to form more than one compound, the mass of one element, which combines with a fixed mass of the other element, will always be ratios of whole numbers. For example, let us assume 2 molecules […]
What does it mean when a number is rational?
What does it mean when a number is rational? A rational number is a number that can be express as the ratio of two integers. A number that cannot be expressed that way is irrational. For example, one third in decimal form is 0.33333333333333 (the threes go on forever). Is 13 a irrational number? 13 […]
How do you give positive feedback examples?
How do you give positive feedback examples? Feedback examples: “I know you’ve been feeling fatigued recently, but don’t think I’ve forgotten your past accomplishments. You just let me know if you want to take some extra time off.” “Let me know if there’s anything you need from me.” What should I write in the appraisal […]
What are the 3 ways to generate magma?
What are the 3 ways to generate magma? There are three principal ways rock behavior crosses to the right of the green solidus line to create molten magma: 1) decompression melting caused by lowering the pressure, 2) flux melting caused by adding volatiles (see more below), and 3) heat-induced melting caused by increasing the temperature. […]
How much of a deca makes a kilo?
Who started time?
Who started time? The measurement of time began with the invention of sundials in ancient Egypt some time prior to 1500 B.C. However, the time the Egyptians measured was not the same as the time today’s clocks measure. For the Egyptians, and indeed for a further three millennia, the basic unit of time was the […]
What happens if ocean currents stop?
What happens if ocean currents stop? If it continues to slow, that could have profound consequences for Earth’s inhabitants. Studies suggest it would mean much colder winters and hotter summers in Europe, changing rainfall patterns in the tropics, and warmer water building up along the U.S. coast that can fuel sea level rise and destructive […]