The pressure of overlying rocks increase the density of the rocks below, the pressure in the mantle is 3.5 million times greater than the surface pressure. Cavities of empty space are highly impossible inside an unimaginably dense mantle. The geomagnetic field, constantly created by convection of molten iron in the outer core and the effect from planetary rotation, protects Earth from solar wind along with other harmful radiations and particles. It would make sense to have the field deteriorates quickly when the iron flows completely stopped. According to the movie, the field would disappear in a year.
When the temperature gets high enough, hydrogen nuclei undergo nuclear fusion to form helium nuclei and give out massive amounts of heat and light. Before the star begins its life, there are the components that will create the star. However, the ultimate demise of a star is somewhat of a mystery. The most interesting aspects during creation and during death, what happens during life, at least for star, are quite inconsequential. Before there was space, there was a set amount of matter.
Have you ever wondered why astronauts need space suits? Well there are many parts of the suit that protect them from extreme conditions that occur in orbit or outer space. Without the suits the astronauts would not be able to survive to return safely. They would be frozen or cooked to their death. Because the sun can send out rays up to 248 degrees Fahrenheit or 120 degrees Celsius and kill you , in addition your organs would began to expand and burst but in the shade the temperature can rapidly fall to deadly freezing points up to -148 degrees Fahrenheit or -100 degrees Celsius.
Nuclear fission only produces steam from the power plants, causing no harm to the environment. However nuclear power is less clean before and after production. Uranium atoms are split in a series of nuclear reactions to produce a surge of heat energy which boils water, to produce steam which turns turbines, powering generators to form electricity. The uranium must be mined from other sites however and be transported to the plants, which can mean expensive importing costs, and the environmental cost of carbon dioxide produced in the transport of uranium. After production, the radioactive waste produced in nuclear power is incredibly harmful and can take years to decay and no longer be radioactive.
They could be launched from specially modified ships for shore bombardment or from the ground on launching rails. Experimenters and scientists in Germany and Russia began working with rockets with a mass of more than 45 kilograms. Some of these were so powerful that their escaping exhaust flames bored deep holes in the ground even before lift-off. So William Congreve wanted to become a competitor to the two German and Russian scientists. Even with Congreve's work, scientists had not improved the accuracy of rockets much from the early days of the solid fuel rockets.
First, an asteroid explosion so big to wipe out all the dinosaurs most likely would have made a bigger impact on the Earth. Second, the volcano theory just doesn’t make much sense to me. How can a volcano destroy all the dinosaurs? It just does not make since. The continental drift theory makes more sense.
The beginning the tanks could only have 3 people and only go 3 mph, later on they got tanks to fit 10 people and go up to 4 mph but they could not go through the trenches. Also later on in 1915 torpedoes, they were used by submarines this is how the Germans sank the Lusitania, later on in 1917 America joined the war on the sides of the allies. I chose weapons because in the war if you didn’t have better and new technology you wouldn’t be able to defeat the other countries. If we didn’t create or make new improved weapons we would lose the war because they would have ways to attack us and kill us much faster and more people than them. Now it is very dangerous making new weapons wrong touch it could explode or something might not work but without people trying to build new and invested technology we back than a today wouldn’t be
The friction heats the gases and causes them to glow from the stellar gas falling into the black hole over time. The author argues that astronomers discovered the first black hole shredder stars, using the ROSAT satellite, which was launched in 1990 with the objective of survey the low energy X-ray sky. According with her the calculations based on ROSAT observations show that a galaxy’s central black hole might gobble a close passing star every 100,000 years or so. Gezari provides evidence that when a black hole chows down on tidally disrupted debris, the temperature of the inspiraling gas can climb to 1 million degrees. Also, she argues that Most of the light is X-rays, but a tail of emission extends to longer, ultraviolet and optical wavelengths.
The first telescope was used by Italian Galileo in sixteen hundred and nine; Galileo was able to make out a few fuzzy crates on the moon’s surface. For many centuries after that humans improved on telescopes, building bigger and better telescopes. But eventually building bigger and better telescopes no longer improved our view. Earth’s atmosphere would always distort light, or bend the light rays astronomers could see. The earth’s atmosphere was limiting how far we could see into space, so astronomers decided to bypass the atmosphere.
The moon also affects the length of day. With the moon’s gravity constantly pulling on Earth, the earth’s rotation slows down dramatically. This is what gives us our twenty four hour days. If we did not have the moon, Earth would spin fast giving us only eight hour days! That would mean only three to four hours of sunlight per day!