Challenging Science Puzzles (repost)
Erwin Brecher, Mike Gerrard, "Challenging Science Puzzles"
1997 | ISBN: 0806996102 | 96 pages | Djvu | 0,7 MB
1997 | ISBN: 0806996102 | 96 pages | Djvu | 0,7 MB
Find the answers to over 100 fascinating quandaries involving heat, light, sound, and even outer space. All the puzzles are based on elementary science and involve things you're familiar with, like golf balls, kettles and carpets, so they're easy to understand and appreciate.