... age of Mars has been reported to be between 3.6 billion and 1.3 billion years old, "depending on who you ask" (Erjavec, 1). These ages come from the estimated ages of meteorites found on Earth that are believed to have originated on Mars (Meteorites from Mars, 1). The meteorites were dated using radiometric dating methods (Erjavec, 1). The most widely accepted theory of life on Mars is that of the recently conceived primitive, or microscopic, life may have existed on early Mars. "A NASA research team at the Johnson Space Center and at Stanford University has found evidence that strongly suggests primitive life may have existed on Mars more than 3.6 billi ...
... 4 to 5 years old. Bald eagles are believed to live 30 years or longer in the wild, and even longer in captivity. They mate for life and build huge nests in the tops of large trees near rivers, lakes, marshes, or other wetland areas. Nests are often reused year after year. With additions to the nests made annually, some may reach 10 feet across and weigh as much as 2,000 pounds. Although bald eagles may range over great distances, they usually return to nest within 100 miles of where they were raised. Bald eagles normally lay two to three eggs once a year and the eggs hatch after about 35 days. The young eagles are flying within 3 months and are on their own abou ...
... was correct. I first had to research all of my chemicals and note their specific contributions to the experiment. The chemicals included vinegar, ethyl alcohol, sulfuric acid, salicylic acid, and methyl alcohol. RESEARCH OF THE PROBLEM To start my project, I researched vinegar. Vinegar is a sour liquid with a pungent odor, containing acetic acid, and is made by fermenting dilute alcoholic liquids such as cider, wine, or other fruit juice. Vinegar is used as a condiment, preservative, and in certain medicines (2: 1214). Ethyl Alcohol is also used in medicines. The formula for this is C2H5OH. It is a colorless liquid with mild characteristic odor. Also k ...
... a force table. Weight hangers were attached to two strings tied to the center ring of the force table, where two slotted masses, one 200g and the other 249g were hung according to their specified directions. The center ring was anchored to the nail positioned at the platform’s center while the upper ring of the spring scale was attached to the free end of the third ring. After attaching the spring balance, its hook was pulled and the reading on the scale and the direction of the pull at which the two forces (hanging mass) are “balanced.” “Balance” was determined. II. Results and Discussion Table 1. Time, distance, velocity and acceleration measurem ...
... in the bottle forced its way down, which applied the force to start the motion of the bottle. His 3rd law can also explain this because the water going down forces the rocket in the exact opposite direction the water goes. Which is why one time when we shot the rocket it flew at an angle. Also it shows why the launchers had stoppers, because if they didn’t the cork wasn’t strong enough to hold that pressure and would cause the rocket to begin flight prematurely. His second law can be used to describe how high and fast the rocket will go. If you wanted it to go really high and fast you would just pump more pressure into it then if you didn’t want it to ...
... it takes seven trucks to deliver the same amount of paper as one plastic delivering truck. Talk about a big waste of gas. Plastic bags cost about ¼ of a cent to make, while paper cost close to 3 cents. This is money we save as well as the store owner. This is a lot of money that is going to waste considering that plastic bags are so much more practical then paper. You can use them for lots of other things. You can take on trips to the grocery store, your can protect dry clothing from wet towels in an exercise bag. You can line your house hold waste basket with them, you tote dry shoes to work on rainy days. Hold plastic, aluminum and glass for recycling. ...
... at the end. It had a major advantage with its internal guidence system, that was developed by The Massachusetts Institute of Technology. The CSM was made of two parts. The crew stayed in the Command Module, which had some couches and was pressurized with oxygen. Behind the CM was the SM or Service Module which had the main engine, which had 21,500lb. of thrust. The reaction control system , oxygen, fuel cells, hydrogen tanks, and envirnmental control systems. The main engine was only used for changes in course and changes in orbit and escape from the lunor orbit. When the crew came back for reentry the CSM would split. The Command Module had heat sheilding ...
... in Sweden and Norway first believed that acidic rain may be causing great ecological damage to the planet. The problem was that by the time that the scientist found the problem it was already very large. Detecting an acid lake is often quite difficult. A lake does not become acid over night. It happens over a period of many years, some times decades. The changes are usually to gradual for them to be noticed early. At the beginning of the 20th century most rivers/lakes like the river Tovdal in Norway had not yet begun to die. However by 1926 local inspectors were noticing that many of the lakes were beginning to show signs of death. Fish were found dead along ...
... must be present in order for crystals to form; and if some of these conditions are not present or are not perfect, then the formation of the crystal will be disturbed. One may ask him/herself, how is the formation disturbed if only one of the condition would happen to be modified? Most crystals are formed under water or under liquids with similar characters to water; and tend to form under liquids or solutions containing a maximum amount of solute. If the liquid absorbs additional solute, then the solution is supersaturated. If a tiny crystal, called a seed crystal, is added to the substance, a chain reaction would occur where the crystal growth will grow d ...
... wastes that decay in a body of water. decrease the amount of oxygen found in it. The living things in the lake need oxygen to survive. If the oxygen level is depressed to zero, all fish in the lake die. Any decomposition that does not contain oxygen starts to generate noxious gases such as Hydrogen Sulfide. Pulp and paper mills, and municipal sewage causes BOD. Nutrients: Nutrients, particularly nitrogen and phosphorus, enrich waters and accelerate the aging of lakes and streams. Also, the result of this is rich plant life which prohibits recreational activities. Plankton blooms depress oxygen levels (as mentioned before) and therefore, endanger living organi ...
