All in One General Science

Science Multiple-Choice Questions

De: Krishna Kumar Singh

Narrado por: Virtual Voice

As educators, we all have the same goal: to help our students make the maximum possible academic gains in a positive, respectful environment that promotes their success and nurtures their desire to learn. One of the greatest tools available to us in this pursuit is explicit instruction—instruction that is systematic, direct, engaging, and success oriented. The effectiveness of explicit instruction has been validated again and again in research involving both general education and special education students. While it has proven to be very helpful for normally progressing students, it is essential for students with learning challenges. Explicit instruction is absolutely necessary in teaching content that students could not otherwise discover. For example, without explicit input, how would an individual discover the sound associated with a letter, the quantity associated with a number, the steps in an efficient math algorithm, the order of operations in algebra, the process for sounding out words, the construction of a persuasive essay, the elements in scientific inquiry, or a spelling rule for dropping the final e? Explicit instruction is helpful not only when discovery is impossible, but when discovery may be inaccurate, inadequate, incomplete, or inefficient. For example, a student may generate a strategy for taking notes on text, but the strategy may be laborious and the notes incomprehensible. This student would benefit from explicit instruction on a more effective alternative. Another student may have a cursory idea of a concept through reading text, but may need explicit instruction to ensure that the nuances of the concept are understood. The present era is the era of science. Science has undoubtedly done a great service to mankind. Man, a rational being, has been curious to explore mysteries of nature and this led to many discoveries being made in various part of the world. But he is never satisfied with the acquired knowledge and is always keen to unravel mysteries of the universe. He has conquered the land and air. His incredible lust for knowledge has revolutionized human life and raised the standard of life. He was able to invent innumerable ways of making his life comfortable and happy. Every sphere of life has been revolutionized by science. There have been innumerable inventions. One of the greatest inventions is the invention of medicines. There has been a series of tests carried out using animals as subjects and various medicines have been tried out on these animals to check their efficacy. Many fatal diseases can now be cured because we have the drug to fight those diseases. It has reduced the rate of infant mortality and increased the life span. Before these inventions millions of people died for lack of medical care. Science has given us many machines that have made our lives very comfortable. Buses, cars, sewing machines, mixes, grinders, etc. are all machines that are used every day by us and the discovery of electricity has made it possible for us to change night into day and summer into a comfortable cool season It is now easy to cultivate fields as we have tractors. New forms of irrigation are now being employed. It is easier to protect the crops because of the use of various chemicals and pesticides. Even mosquitoes can be driven away because of the discoveries made in science. It has enabled man to entertain himself in many ways. TV, radio, video and the cinema are all popular means of entertainment. Besides entertainment they educate the masses. Today the computer has made life even easier for us. The press, the means of communication, etc. have all improved because of science and its gifts to us.