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How do large bodies of water affect climate?

When the sun's energy strikes land, a small amount of heat is absorbed by the uppermost layer of the crust and the rest is reflected back into the atmosphere. A large body of water, on the other hand, has a surface made of molecules that are constantly in motion, allowing warmer water to circulate away from the surface and bringing cooler water up to absorb more heat. This allows oceans and other bodies of water to absorb much more heat than land masses do. During the summer, the ocean absorbs heat from the atmosphere, cooling the air that flows from the sea onto the land. In the winter, ..

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What is the melting point of sand?

Silicon dioxide is a hard substance, not soluble in water and a poor conductor of electricity. The sand on beaches is made up of silicon dioxide or silica. Silicon dioxide is also the main component found in quartz and sandstone.Although sand and quartz may have the same chemical formula, the difference between the two is that quartz forms into a large crystal shape and sand grains are small. Likewise, sand may consists of mainly silica, but it also contains some other mineral substances. Both these forms of silicon dioxide are found in nature in abundant quantities.

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What happens when the pH of a solution is equal to the pKa of the buffer?

Buffers are made from a weak acid and its conjugate base or a weak base and its conjugate acid. The conjugate is the species created after the donation of a proton, forming a conjugate base, or the acceptance of a proton, forming a conjugate acid. The greater the difference between the concentration of the acid and the base, the less effective the buffer. Typically, the amount of acid to base does not differ by more than tenfold. The exact ratio of a buffer's base to acid concentration is given by the Henderson-Hasselbalch equation, which states the pH is equal to the pKa minus the logari..

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What is the equation for inelastic collision?

Perfectly inelastic collisions result when two objects collide and stick together, moving in the same direction. A bug hitting the windshield of a car is an example of an inelastic collision. Before colliding, the bug and the car are moving separately, and after they are moving together. Kinetic energy is always lost in inelastic collisions because it is converted to other forms of energy.

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What is a leap year?

In a leap year, Feb. 29 is the extra day of the year, which is called either a leap day or an intercalary day. Leap years occur approximately every four years. The addition of an extra day to the Gregorian calendar occurs so that it aligns and correctly matches the length of a solar year. A solar year is the time it takes for the Earth to make one revolution around the sun. It is approximately equal to 365.242199 days. Without this correction, a calendar year is shorter than a solar year.

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How can I achieve a thin waist and thick thighs?

Perform lunge exercises Doing elevated lunges with dumbbells or barbells can strengthen the thigh muscles while reducing fat in the waist area. Stepping up on an aerobic platform creates the elevation for this exercise and helps to define the thighs and make them bigger. Now Loss recommends doing four to 10 sets of five to 12 reps of this exercise. Don't use weights that are too light or too heavy. Do the exercises a few days a week with rest days in between. Keep a workout log Journal your progress. This lets you know whether you should increase or decrease the amount of weight you'..

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What is the ring around the sun called?

A halo appears around the sun when thin cirrus clouds containing tiny ice crystals occur above about 20,000 feet. The sunlight is refracted by the ice crystals and produces a ring that appears 22 degrees from the sun. Most halos are bright white, but the dispersion of the light is also capable of causing a halo to have colors, sometimes with a red band toward the inside and a blue band toward the outside. Lunar halos are more likely to be white since moonlight is not as bright as sunlight. Halos appear most frequently in the winter, spring and autumn.

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What are some examples of animals that estivate?

Snails achieve a state of dormancy during the summer in tree trunks, under leaves or on stone walls. The snail retreats completely into its shell until weather conditions improve. When snails estivate on the ground, mucus seals the shell except for one small opening to let air into the snail's shelter.\nCrocodiles go into suspended animation during severe droughts and prey is scarce. Lungfish estivate for periods up to three years without water. Lungfish bury themselves in mud and then cover their bodies in mucus to hold in moisture. Lungfish breathe using lungs instead of gills and get o..

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What is a cinder cone volcano?

Cinder cones can build up as part of other volcanoes, forming around magma vents on shield volcanoes or calderas. These tend to be relatively small volcanoes, rarely reaching more than 1,000 feet in height. Cinder cones tend to be less stable than other volcano types, due to the small fragments that make up the body of the volcano. This leaves them prone to vent collapses, which can cause pressure to build up beneath the cone and trigger an explosive eruption. Under some circumstances, these explosive eruptions can completely destroy a cinder cone, blowing the solidified lava fragments away fr..

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What is a sustained contraction called?

The force and frequency of the stimulation from the central nervous system and the type of muscle fiber receiving the stimulation all affect the intensity and duration of the muscle contraction. The force and frequency of the stimulation from the central nervous system and the type of muscle fiber receiving the stimulation all affect the intensity and duration of the muscle contraction. Sustained contractions can result in muscle fatigue, inhibiting muscle response to further stimulation. Weak muscle fibers are more likely to fatigue.

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