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Author : Ron Fridell
Publisher : Twenty-First Century Books
Page : 80 pages
File Size : 46,7 Mb
Release : 2010-01-01
Category : Juvenile Nonfiction
ISBN : 9780761359937
Explore the wonders of transportation including roads and mass transit systems as well as vehicles such as bicycles, airplanes and spaceships.
Author : Deborah Cadbury
Publisher : Unknown
Page : 423 pages
File Size : 42,6 Mb
Release : 2007
Category : Civil engineering
ISBN : OCLC:1280708869
Author : Fred Bortz
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 55,5 Mb
Release : 2011-01-01
Category : Juvenile Nonfiction
ISBN : 9780761354536
Highlights seven of the world's greatest achievements in space technology.
Author : D.J. Ward
Publisher : Twenty-First Century Books
Page : 80 pages
File Size : 48,9 Mb
Release : 2011-01-01
Category : Juvenile Nonfiction
ISBN : 9780761372820
The universe is full of space phenomena, such as dark matter, dark energy, and the beginning of the universe. Read what astronomers and space scientists have discovered about these amazing wonders and what they have yet to learn.
Author : Ron Miller
Publisher : Twenty-First Century Books
Page : 80 pages
File Size : 54,8 Mb
Release : 2011-02-01
Category : Juvenile Nonfiction
ISBN : 9780761372783
From earliest times, humans have wondered about the sky above them. People looked at distant stars and wondered what they were made of. They wondered whether any other places in the universe were like Earth. At first people used simple telescopes to study the solar system the Sun and all the planets that circle around it. Later, more powerful telescopes and high-tech machines allowed people to investigate worlds outside the solar system. In this book, we'll explore seven wonders beyond the solar system. We'll look at giant clouds of gas and dust called nebulae. Some nebulae are places where stars are born. Other nebulae are all that remains of stars that have died. Other wonders beyond the solar system include pulsing stars, giant stars, and giant clusters of stars called galaxies. We'll visit them all. And we'll explore the age-old question: Does the universe have any other planets like Earth? We'll learn about scientists who hunt for Earthlike planets and the tools they use. Finally, we'll look at the big picture the universe itself. This vast network of stars, planets, and other objects is the biggest wonder of them all.
Author : Donald Cleveland
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 48,6 Mb
Release : 2010-01-01
Category : Juvenile Nonfiction
ISBN : 9780761342403
Explores the seven wonders of communication, from the first language to the World Wide Web and why these communication advancements are important.
Author : Ann Kerns
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 49,5 Mb
Release : 2010-01-01
Category : Juvenile Nonfiction
ISBN : 9780761342366
Describes seven monumental architectural sites from modern times that are noted for their beauty, innovation, and uniqueness, including the Taj Mahal, Saint Peter's Basilica, and the Sydney Opera House.
Author : Ron Miller
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 50,8 Mb
Release : 2011-01-01
Category : Juvenile Nonfiction
ISBN : 9780761354512
Presents information about the asteroids, comets, and meteors found in the solar system, describing their physical components, orbits, and the effects of their possible collisions with the Earth and other planets.
Author : Rosanna Hansen
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 41,7 Mb
Release : 2011-01-01
Category : Juvenile Nonfiction
ISBN : 9780761354505
Describes seven different phenomena of the Sun and other stars of the universe, including solar storms, eclipses, and supernovas, and explains why these phenomena occur.
Author : Ron Miller
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 55,9 Mb
Release : 2011-01-01
Category : Juvenile Nonfiction
ISBN : 9780761354499
Describes seven phenomena about the outer planets of the solar system and their moons, including the great red spot of Jupiter and the underground sea of Europa, and explains how these phenomena occurred.
Author : Ron Miller
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 44,7 Mb
Release : 2011-01-01
Category : Juvenile Nonfiction
ISBN : 9780761354482
Describes the geographic phenomena of the inner planets of the solar system and their moons, including the largest mountain of the planets, the deepest canyon, and the highest recorded temperatures.
Author : Ron Miller
Publisher : Twenty-First Century Books
Page : 80 pages
File Size : 51,9 Mb
Release : 2010-01-01
Category : Juvenile Nonfiction
ISBN : 9780761359890
In every age, science and technology have played an important role in advancing human civilization. From architecture to engineering, communication to transportation, humans have invented and developed extraordinary wonders. Engineers take the discoveries of scientists and mathematicians to make practical things, from roads and bridges to weapons and vehicles. Electronic engineers design and build everything from television sets to computers. Chemical engineers research new uses for plastics and other materials. Other engineers design new energy sources and nonpolluting factories. In this book, we’ll explore seven wonders of modern engineering that allow people to travel beneath the ocean, bring power to entire cities, and land on the moon. We’ll also see engineering wonders that cut though a continent and design engines too small to see. Along the way, we’ll see advancements in materials, technology, and construction techniques, and we’ll learn the stories of how and why these engineering feats became important to the world.
Author : John C. Ryan
Publisher : Unknown
Page : 116 pages
File Size : 42,8 Mb
Release : 1999
Category : Conservation of natural resources
ISBN : CORNELL:31924067935704
Consider your way of life and the effect that you have on the planet, and ask yourself the following question: If everyone on Earth lived like you, what would the impact be on the natural world and its finite resources? Probably catastrophic. According to John Ryan, it's time for us to reexamine our actions and reconsider our options. InSeven Wonders,Ryan informs readers of the extraordinary benefits of such familiar things as the bicycle, the ceiling fan, the clothesline, the condom, Thai food, the public library, and the ladybug - and how using them can help solve critical global problems such as air pollution, ozone layer depletion, and toxic pesticide runoff. Our high-consumption "American way of life" creates enormous ecosystem damage. John Ryan artfully demonstrates how we can adopt relatively easy ways to lessen this damage and, at the same time, improve the health of our shared natural environment and of our families.
Author : Karen Gunnison Ballen
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 54,6 Mb
Release : 2010-01-01
Category : Juvenile Nonfiction
ISBN : 9780761342397
Describes seven major developments in medicine that made possible major changes in preventing and treating diseases and improving health, including vaccination against smallpox, the use of insulin for diabetes, and heart transplants.
Author : Ron Miller
Publisher : Twenty-First Century Books
Page : 84 pages
File Size : 44,7 Mb
Release : 2010-01-01
Category : Juvenile Nonfiction
ISBN : 9780761342373
Describes seven engineering feats from modern times that are noted for their extreme size, innovation, and ability to withstand stresses, including the Empire State Building, the Panama Canal, and the Three Gorges Dam in China.