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Search results 621 - 630 of 1576 matching essays
- 621: Toxic Waste
- ... waste disposal. This process takes nuclear waste and embeds it into a glasslike substance that is stable for thousands of years. They take these erosion-resistant blocks and put them underground in salt mines or rock formations. This method of disposal is widely used in France because of their extensive use of nuclear power. In the United States, permit requirements and performance standards are needed for thermal toxic waste destruction. These ...
- 622: Tsunamis
- ... predict when the resulting seismic sea wave will reach shore. The scientists base their calculations on data provided by instruments called seismographs. These instruments detect vibrations called seismic waves that the earthquake sends through the rock beneath the ground. Seismic waves travel much faster than a tsunami travels through the water. The speed of a tsunami depends on the depth of the water. The tsunami warning system bases itself on the ...
- 623: The Planet Venus
- ... Venus. Venus has a lot of craters on its surface. There are 935 craters on Venus that are named after famous women. The largest crater is named crater Mead. Almost all of Venus has volcano rock on the surface. There is over 100,000 volcanos and they dot the surface. One flow out of a volcano is over 4,300 miles long. Venus was the first planet to be reached ...
- 624: Venomous Creatures of the West Pacific
- ... with ease, but have difficulty moving on land. Sea snakes are commonly found in sheltered coastal waters, especially near river mouth, which seem to be their favorite locations. Around shore areas they may find a rock, crevice, tree root, coral boulder, or a piling to hide behind while waiting for prey. Sea snakes use their venom to capture prey and for protection against predators. Sea snakes capture their food underwater, usually ...
- 625: Earthquakes
- ... Two are classified as body waves-that is, they travel through the earth's interior-and the other four are surface waves. The waves are further differentiated by the kinds of motions they impart to rock particles. Primary or compressional waves (P waves) send particles oscillating back and forth in the same direction as the waves are traveling, whereas secondary or transverse shear waves (S waves) impart vibrations perpendicular to their ...
- 626: The Noble Gases
- ... the most abundant and most used noble on earth. Sir Walter Ramsey discovered it by Lord Rayleigh and in 1894. Argon makes up about 1.2 % of the earths atmosphere. It is found naturally in rock and in the air. It is used for electric light bulbs and fluorescent tubes. It is also used a lot in industry. Krypton a very rare noble was discovered by Sir Walter Ramsey and by ...
- 627: Observed Distribution of South American Relief Features
- ... Plate tectonics studies these restless effects to give us a better understanding of the Earth and its past. New molten rocks are poured out in the form of magma from the mid-ocean ridges. The rock is recycled and re-entered back into the earth in deep ocean trenches through convection current. The convection current in the mantle drives plates around either against or away from each other. These collisions give ...
- 628: Possibility of Terraforming One of Earth's Neighboring Planets
- ... answered. The Formation of the Earth Approximately 4.6 billion years ago the earth formed from the condensation and accretion of a solid mass from the solar nebula of gas and dust (Tillery 1993). Metamorphic rock was the first solid form of earth dating back approximately 3.8 billion years. Igneous rocks provide evidence that prior to 3.8 million years ago the earth's geologic processes of erosion were much ...
- 629: The Polar Bear
- ... of ice when they jumped into the frigid water to catch their prey. It also keeps them nice and warm in the winter. In the summer, however, they get extremely hot. To cool down, they roll over on to their sides and stick their paws out. This activity sends the heat out through their pads, lowering their body temperature. Below all the fur, there is a 4 to 5 inch thick ...
- 630: Invertebrate vs Vertebrate
- ... in captivity. Instead, they mate on land near the sea. After the eggs develop, the female carries the eggs on her abdomen to the sea where she leaves them on wet sand or a wet rock for the tide to carry them out to sea. There are usually 1,000 to 50,000 eggs at a time. They are small larvae at sea where they molt several times in order to ...
Search results 621 - 630 of 1576 matching essays
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