Ged Science Exam For Exam Preparation

GED Science Exam FOR EXAM PREPARATION The following symbols represent a shortcut for representing an element. For example, O stands for oxygen, H for hydrogen, and C for carbon. H2O is the formula for water. The subscript 2 in the formula indicates that there are two atoms of hydrogen in a water molecule. If there is no subscript after a symbol, the subscript is assumed to be one. Therefore, one molecule of water contains three atoms: two hydrogen atoms and one oxygen atom. Based on the information, how many atoms are represented in C12H22O11? A. 3 B. 11 C. 12 D. 22 E. 45 Cholera is a disease caused by a bacterium that is transmitted by water, shellfish, and raw vegetables. The major symptom is severe diarrhe a. Epidemics of cholera in the Americas, common in the 19th century, are much less frequent now with the advent of modern medicine and improved methods of hygiene. However, in 1991, the number of cholera epidemics increased again in one South American country, causing over 4000 deaths. The high number of cases of cholera in the South American country noted above was most probably due to which factor? A. prolonged smoking of cigarettes B. lack of variety in foods C. poor water and sewage treatment D. eating the wrong kinds of foods E. widespread overuse of antibiotics Making products from recycled materials, such as aluminum cans, glass, and plastic usually saves energy and other resources. For example, it takes about 75% less energy to make steel from scrap than from ore. All forms of recycling involve some energy to produce the recycled materials, a process that also results in the production of some pollution. Question: 1 Answer: E Question: 2 Answer: C Question: 3 The chart at the left shows the energy savings from recycling. When Anil is at the grocery store, he can choose to buy juice in a glass bottle, an aluminum can, a plastic jug, a juice box (paper), or foil-covered juice container. If Anil's community requires that he recycles, which container would provide the MOST overall energy savings? A. aluminum can B. plastic jug C. waxy, cardboard juice box D. glass bottle E. foil-covered container The greenhouse effect explains why a car's interior can get hot on a sunny day even if it is cool outside. The glass windows allow the Sun's rays to pass through to the interior but prevent heat rays from escaping to the outside. Certain gases, such as carbon dioxide and nitrous oxide, act like the glass in a greenhouse when they are present in the atmosphere. Both natural and human activities lead to the release of gases that contribute to the greenhouse effect. During recent summers, forest fires have contributed to the loss of millions of acres of forest. These fires have resulted in the release of smoke and ash as well as greenhouse gases. Based on the information, which statement most likely predicts the result of ongoing widespread forest fires? A. Forest fires are unlikely to affect atmospheric temperature. B. Forest fires decrease the amount of atmospheric greenhouse gases. C. Greenhouse gases could help form new animal species. D. There could be a gradual increase in average atmospheric temperatures. E. There could be a gradual decrease in average atmospheric temperatures. Answer: A Question: 4 Answer: D Question: 5 A scientist uses a laboratory mouse to complete an experiment involving a maze. During each trial, the mouse runs through the maze, and the scientist counts the number of errors that the mouse makes before it reaches the end of the maze. The mouse goes through the maze a total of six times. The scientist's data are shown in the table at the left. Based on the information and graph, which statement is the best interpretation? A. The mouse made more errors after completing several runs through the maze. B. The mouse made the same number of errors during each run through the maze. C. The mouse reduced the number of errors made during the six runs through the maze. D. The number of errors that the mouse made decreased an equal amount during each subsequent run through the maze. E. The number of errors that the mouse made varied erratically during the six runs through the maze. Why is algin used in a chocolate milk shake? A. provides a dark chocolate color B. makes the milk shake thick and creamy C. enhances the chocolate flavor Answer: C Question: 6 D. makes