Fagbøger for børn og unge: maskiner og hvordan ting fungerer

A rotting hull of a ship...lost gold...coins...gems...Sunken Treasure!Today treasure hunting is a big business. Searchers use metal detectors and sonar to locate treasure on the ocean floor. Divers use high-powered machinery to uncover objects buried in the sand and to raise them to the surface. And more than just treasures are discovered. A whole window into the past is opened up. A salvage can take months or even years. But it's worth it!

Do you ever mail a letter and wonder what happens to it after you drop it in the box? Read all about the post office and learn how letters are weighed, sorted, transported, culled, canceled, coded, binned, boxed, and sorted once again. Find out how people and machines work together to deliver the letters you send.Children's Books of 1982 (Library of Congress)

Birds don't need maps!Many birds make long journeys twice each year as they migrate between their winter and summer homes. Arctic terns fly more than 10,000 miles from the South Pole to northern Maine. Tiny little hummingbirds fly nonstop over the ocean for 500 miles. How do they know which way to fly? Why don't they get lost? Read and find out the many ideas scientists have come up with to explain this mystery.

"[In] a revision of the 1963 edition, [a] brief, clearly written text [tells of a young girl who] learns some interesting facts about fireflies from her grandfather. Alexander uses richly hued pastels for her illustrations of the young girl, her grandparents' farm, and the creatures of a summer night."?SLJ.

The switch goes up -- the light goes on,The switch goes down -- the light goes off.It seems like magic! It's not -- it's electricity. But how does a light actually work? In this clear and simple book learn all about electricity, how it's produced, and how it can be used. At the end you'll learn how to conduct fun experiments that will let you generate electricity yourself!

How did those enormous dinosaur skeletons get inside the museum?Long ago, dinosaurs ruled the Earth. Then, suddenly, they died out. For thousands of years, no one knew these giant creatures had ever existed. Then people began finding fossils?bones and teeth and footprints that had turned to stone. Today, teams of experts work together to dig dinosaur fossils out of the ground, bone by fragile bone. Then they put the skeletons together again inside museums, to look just like the dinosaurs of millions of years ago.

Dinosaurs are extinct now, but you can visit dinosaur skeletons in a museum. There you will meet Brachiosaurus, Stegosaurus, and Diplodocus and learn how they ruled the earth millions of years ago. You'll see dinosaurs with over 1,000 teeth, dinosaurs who could swim, meat-eaters and plant-eaters. And, of course, you'll meet the king of all dinosaurs, the gigantic Tyrannosaurus rex.

En stor faktabog for både børn og voksne om alle de spændende ting, der gemmer sig langt nede i jorden og nede i vandet.Tag med på en fascinerende rejse, og oplev huleboere, minearbejdere, labyrintiske grotter og forstenede dinosaurknogler, og fortsæt turen helt ind til Jordens rødglødende kerne. Vend bogen og opdag, hvad der skjuler sig nede i havet. Fra videnskabsmænd i forskningsfartøjer, borehuller og skibsvrag til fabelagtige farverige fisk og sære skabninger fra dybet. Oplev både koralrev badet i sollys og de dybeste dele af havet, der henligger i kulde og mørke.Bogen indeholder hundredvis af fascinerende fakta og masser af detaljerede illustrationer, der vil imponere både børn og voksne.Fra ca. 6 år.

I den populære papbogs-serie 199 kan du i 199 TING PÅ BONDEGÅRDEN finde alverdens ting, man kan møde på en bondegård - fra dyr og planter til maskiner og andet udstyr.Andre titler i 199-serien:199 ting på vejen199 dinosaurer og andre forhistoriske dyr199 store maskiner199 ting på bondegården199 smådyr199 flag