Earth Science review on flashcards

Chemistry Regents Prep Book

In 1993, the U.S. Department of Defense declassified information dealing with frequent explosions in the upper atmosphere caused by meteoric impact. It is estimated that impacts have occurred of a magnitude equivalent to the atomic bomb detonated at Hiroshima. Not all such space voyagers meet their end in the atmosphere, however; huge craters attest to the bombardment of earth over millions of years, and a major impact may have resulted in the extinction of dinosaurs. An impact in Siberia near the beginning of this century proves that such events are not confined to geologic time. Hazards Due to Comets and Asteroids marks a significant step in the attempt to come to grips with the threats posed by such phenomena. It brings together more than one hundred scientists from around the world, who draw on observational and theoretical research to focus on the technical problems related to all aspects of dealing with these hazards: searching for and identifying hazardous comets and asteroids; describing their statistics and characteristics; intercepting and altering the orbits of dangerous objects; and applying existent technologies—rocket boosters, rendezvous and soft-landing techniques, instrumentation—to such missions. The book considers defensive options for diverting or disrupting an approaching body, including solar sails, kinetic-energy impacts, nuclear explosives, robotic mass drivers, and various propulsion systems. A cataclysmic impact posing a threat to life on Earth is a possibility that tomorrow's technology is capable of averting. This book examines in depth the reality of the threat and proposes practical measures that can be initiated now should we ever need to deal with it.

Highly effective living environment regents review on flashcards. Student friendly with great hints, memory-aid techniques, and pictures. Fun to study with and will help you ace your regents!

Boost your problem-solving skills! These brights, bold, and FLUORESCENT puzzles and activities will spark your creative brain, stretch that math muscle, and nurture a love of logic. Brain Boosters: Planet Earth contains mazes, pattern sequences, math problems, dot-to-dots, wordsearches, matching games, quizzes, spot the difference, and much more! BONUS: There are fascinating nature facts too!

[This book] examines our Earth, the Moon and the planets, the latest advances in space technology, and continuing challenges of space and manned spaceflight. Unit 1 ... discusses the elements beyond the Earth's atmosphere, surviving and living in space, and physiological results of manned spaceflights. [Unit 2] discusses the space programs of America, the creation of the National Aeronautics and Space Administration (NASA), working and scientific satellites, the space programs of the former Soviet Union, and the space programs of Europe, Canada, China, Australia, and Japan. Unit 3 ... discusses issues critical to travel in the upper atmosphere such as orbits and trajectories, unmanned satellites, space probes, guidance and control systems, and commercial use of the space program. Unit 4 ... covers major milestones in the endeavor to land on the Moon, and to safely orbit humans and crafts in space for prolonged and temporary periods. It also covers the development of space stations, the Space Shuttle and its future, and international laws for the use of and travel in space. -Pref.

This book teaches the reader to build rockets--powered by compressed air, water, and solid propellant--with the maximum possible fun, safety, and educational experience. Make: Rockets is for all the science geeks who look at the moon and try to figure out where Neil Armstrong walked, watch in awe as rockets lift off, and want to fly their own model rockets. Starting with the basics of rocket propulsion, readers will start out making rockets made from stuff lying around the house, and then move on up to air-, water-, and solid propellant-powered rockets. Most of the rockets in the book can be built from parts in the Estes Designer Special kit.

In the wake of Viagra's enormous popularity, the international market has been inundated by a blizzard of purported natural sex enhancers. Some of these products are nothing but hype, yet others contain proven agents that enhance libido, improve sexual function, and increase pleasure. These bona fide sex-boosters can be found in Hot Plants. From the ancient rainforests of Malaysia, to remote mountains in Siberia, medicine hunter Chris Kilham has scoured the globe in search of effective, sex-enhancing plants. Hot Plants, Nature's Proven Sex Boosters For Men And Women, contains a lively account of those adventurous travels, with valuable information that you can use to boost your sex life. These natural agents of desire include Tongkat Ali, maca, yohimbe, catuaba, ashwagandha, horny goat weed, zallouh root, Rhodiola rosea, Red ginseng, Siberian ginseng and chocolate. Medicine Hunter Chris Kilham draws upon history, legend and keen research, as he weaves tales of remarkable people, exotic locations, and his extensive investigations into the science and uses of the hot plants. Learn which plants increase libido in both men and women, improve erectile function in men, put more fire into your sex life, and significantly boost your pleasure.