4 14 light and sound waves (physical science)

... something vibrates, a sound is created Sounds can be loud or soft Loudness describes how loud or soft sound is Big vibrations make loud sounds Small vibrations make soft sounds Sounds can also be ... direction the sound is traveling 10 11 Sound travels through steel at 5,200 meters per second Sound travels through water at 1, 530 meters per second Sound travels through air at 3...

Ngày tải lên: 21/04/2017, 08:54

... Wouldn’t echolocation clicks come in handy? Shrews are very small and weigh about as much as a nickel 20 21 Now Try This EXPERIMENT WITH SOUND! As you have read, dolphins make sound waves They use echolocation ... shorter waves 22 23 Glossary anvil n the central bone of three tiny bones in the middle ear cochlea n a spiralshaped tube in the inner ear echolocation n a method o...

Ngày tải lên: 24/04/2017, 15:38

... Goats, horses, and rabbits are herbivores Some animals eat both plants and other animals These animals are known as omnivores Chimpanzees are omnivores They eat insects, fruits, seeds, and many other ... deer could become prey for a bobcat 13 Food Webs One food chain cannot show all the plants and animals that pass on energy, even in a small place Plants and animals...

Ngày tải lên: 21/04/2017, 08:52

... Bullfrogs can make low-pitched sounds Sound moves through solids, liquids, and gases Sound travels fast through gases Sound travels even faster through liquids Sound travels fastest through solids ... read on to find out more about how sound travels bullfrog Sound Waves If you touch a vibrating tuning fork to water, the sound waves will make the water move Every sound...

Ngày tải lên: 21/04/2017, 15:32

... part of big changes in the way Americans got around The steamboat and the canal boat helped move people and goods over water New roads helped link cities and towns over land The biggest change came ... ©Bettman/Corbis 13 ©Mark Richards/PhotoEdit 14 ©Ewing Galloway/Camerique Inc., Int’l/Retrofile.com 15 ©Minnesota Historical Society/Corbis 10 V0G1 14 13 12 11 10 09 08 07 06 05 Edit...

Ngày tải lên: 24/04/2017, 15:50

... answers to your questions? Write your questions and answers in a chart similar to the one below Questions Answers The Wheels on the Bike Go Round and Round by Laurence Howard One of the vocabulary words ... the back one Why? Making one turn of the pedals equaled one circle of the front wheel The larger the front wheel, the farther you could travel on one...

Ngày tải lên: 24/04/2017, 15:43

... Cooney and Cooney International Journal of Emergency Medicine 2011, 4:14 http://www.intjem.com/content/4/1/14 Page of dressings and close follow-up result in improvement of these wounds ... and provided authorship of the text of this manuscript Cooney and Cooney International Journal of Emergency Medicine 2011, 4:14 http://www.intjem.com/con...

Ngày tải lên: 21/06/2014, 04:20

... 52 Mobile and Wireless Communications: Physical layer development and implementation The novel HAP has features of both terrestrial and satellite communications and has the advantages ... the zk ,i s are independently and identically 60 Mobile and Wireless Communications: Physical layer development and implementation distributed zeromean real Gaussian...

Ngày tải lên: 21/06/2014, 14:20

... short range wireless communications 270 Mobile and Wireless Communications: Physical layer development and implementation Communication System Design and Testing 2.1 Choosing wireless technologies ... voltage and the duration of the pass This model can be easily adapted to work with any kind of periodical energy source 256 Mobile and Wireless Communications...

Ngày tải lên: 21/06/2014, 14:20

... communications 270 Mobile and Wireless Communications: Physical layer development and implementation Communication System Design and Testing 2.1 Choosing wireless technologies Many different wireless technologies ... voltage and the duration of the pass This model can be easily adapted to work with any kind of periodical energy source 256 Mobile and Wireless Comm...

Ngày tải lên: 21/06/2014, 19:20

... 5 .4 5.9 9.5 296 339 44 1 135 152 1 94 295 338 44 0 133 152 1 94 41.5 46 .4 58.8 15.5 17.2 21.7 5.38 5.89 7 .44 1.21 1.31 1.66 0.37 0 .41 0.51 292 335 43 7 133 151 193 280 322 41 6 131 148 190 41 .2 45 .9 ... 1.39 1. 74 0.39 0 .42 0.52 375 41 8 521 155 172 218 44 .9 331 376 47 7 143 160 203 42 .8 47 .6 60.2 15.8 17 .4 22.0 5 .45 5.97 7.52 1.22 1.32 1.67 0.37 0 .41 0.51 306 3...

Ngày tải lên: 11/08/2014, 15:20

... commercial sensor, and may vary for other probes a Liquid-in-glass Liquid-in-glass thermometers remain the standard soil probes in the meteorological services of many countries Spirit-in-glass types ... Inc Soil Temperature Regime 557 Fig Annual wave of soil temperature at 30 cm depth, Aberdeen, Scotland (1966 –1975 10-year mean) Symbols: observed data Dashed and solid curves: one-...

Ngày tải lên: 11/08/2014, 15:20

... permission of the NAP Generated for marcio_andrei@terra.com.br on Sat Oct 17:18:26 20 04 http://books .nap. edu/catalog/5787.html 48 • Teaching About Evolution and the Nature of Science The importance of ... emphases and perspectives in many different curricula Evolution and the Nature of Science in the National Science Education Standards Evolut...

Ngày tải lên: 12/08/2014, 08:21