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How does a tsunami happen?

Most tsunamis are caused by earthquakes. As a result, most tsunamis occur near or at fault lines. When a tsunami is generated, it is not only 1 wave. Instead it is a series of waves, known as a wave train. These waves travel together and can be up to 1 hour apart. Tsunami waves travel extremely fast with speeds of up to 500 miles per hour—the speed of a jet.\nThey can be as wide as 60 miles and cross entire oceans without losing momentum. When a tsunami is traveling, it may be less than a foot in height. This causes it to be unnoticed by sailors who are at sea. As the tsunami approaches land..

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Why are cells so small?

As an example, a typical animal cell requires oxygen to survive. The size of the cell partially dictates the amount of oxygen it needs, while the surface area of the cell limits the amount of oxygen that can be absorbed at a time. Accordingly, when the size of a cell grows, its demand for oxygen and other resources rises at a rapid rate, while its capacity for absorbing oxygen increases more slowly. At some point, the size of the cell will cause the cell to divide or die, according to Brooklyn College.\nDespite the limitations on cell size that are imposed by the surface-to-volume ratio, a 201..

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What are the characteristics of metamorphic rocks?

Metamorphic rocks are changed over eons from one type of rock to another through heat and pressure in the earth's crust. Eventually, they're heaved up to the surface of the earth. Examples of metamorphic rocks include marble, which is derived from limestone, quartzite, which is derived from sandstone, serpentine, which is derived from rocks like olivine, and amphibolite, which is derived from basaltic lava.

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How can you tell which side of the heart is the ventral surface?

The front side of the heart is often identified by the coronary sinus that runs across it at an angle, says Muskopf. The auricle is a flap that looks like an ear covering the atrium. The pulmonary trunk enters the top of the heart at an angle in front of the aorta. The four major vessels that enter the heart are the pulmonary trunk, aorta, superior vena cava and pulmonary vein. The two atria are located at the top, and the two ventricles are located at the bottom.\nThe surface of the heart has several distinctive features that are anatomically and clinically important, states Sophie White for ..

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Where can you find head-to-toe assessment worksheets?

What-When-How is a website giving in-depth information and tutorials on head-to-toe assessments. The worksheet documentation presents forms and formats to be used by nurses in conducting head-to-toe assessments. The site also provides a downloadable graphic worksheet that nurses can refer to whenever they need.\nNurses Labs provides notes on available nursing physical assessment worksheets, as well as additional tips to enhance performance in head-to-toe assessments by nurses. The site also gives pointers and explanations on each stage of the assessment.

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How big is Jupiter?

Jupiter is made mostly of gas and weighs about 1.9 x 10^27 kilograms. Its volume is about 1,321 times that of Earth's, and it has a surface area of 23.7 billion square miles. Jupiter's surface area is 120 times that of Earth. Jupiter is made up mostly of hydrogen and helium and is considered to be a gas giant planet. Because of its gases, Jupiter is only one-fifth as dense as Earth.

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How do planetesimals form?

Planetesimals can be small objects that are only a few meters in diameter or they can be as large as several kilometers in diameter. The birth of planets is thought to start off with a protoplanetary disk, which is a disk consisting of small particles such as dust and debris revolving around a central protostar.\nGravity is the major force that drives the formation of planets from planetesimals. Gravity is present between any two objects in the universe, and the force of gravity depends on how big the objects are and how far they are from each other.\nWith a protoplanetary disk, gravity acts o..

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How do you convert inches to decimal equivalents?

There are 100 centimeters to a meter, so multiplying an inch measurement by 0.0254 results in the meter equivalent. For a millimeter measurement, multiply the inch measurement by 25.4.\nThe same conversion can be done in reverse as well. One centimeter is equivalent to about 0.3937inches, so to convert centimeters to inches, multiply a centimeter measurement by 0.3937. There are 10 millimeters per centimeter, so multiplying millimeter measurements by 0.03937 results in the inch equivalent.

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What elements are in plastic?

Plastics generally consist of molecules made up thousands of atoms bound to each other. As a result, most plastics have a high molecular weight. In carbon-based plastics, each carbon atom can join with other atoms and create up to four chemical bonds. These can result in long chains, forming a thermoplastic. Examples of plastics in general use include the packaging of cleaning products, car bumpers and the packaging of food products, such as ketchup.

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Why is the genetic code important?

Deoxyribonucleic acid is a two strand helix that encodes genes. Genes are areas in DNA that contain the details for certain proteins. Upstream in the genetic sequence, areas of nucleotides called promoter sites signal to enzymes where to begin the process of transcription, in which the helix is broken apart and a template strand of DNA is read by RNA polymersase.\nRNA polymerase, an enzyme, reads the template strand and synthesizes a complementary strand of RNA known as mRNA. mRNA contains triplets of bases (codons) that are interpreted in the ribosome by tRNA. The tRNA uses amino acids from t..

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