Valencia

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.

Este libro sobre la Persona del Espíritu Santo es el relato de un viaje personal. Después de muchos años de ser creyentes el Señor puso una inquietud en mi vida y la de mi esposo - la inquietud por buscar la llenura del Espíritu Santo. Fue un 'viaje' donde aprendimos mucho y en estas páginas comparto esa aventura espiritual. En mis lecturas diarias de la Palabra anotaba todo lo referente al Espíritu Santo y de allí los datos que se encuentran en la primera parte. Descubrimos que en verdad, la llenura del Espíritu Santo es una experiencia grandiosa. Ya nada es igual. Todo cambia y no...

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

This award-winning beginner's guide to the natural world of fish from the creators of the About... series was named an "NSTA Recommends" book. Noted educator and author Cathryn Sill uses simple, easy-to-understand language to teach children the basic characteristics of what fish are, how they swim, breathe, and reproduce, and explains the different ways they protect themselves from predators. With beautifully detailed, realistic paintings, noted wildlife illustrator John Sill introduces readers to the diversity of the fish population, from an Arctic char to a porcupine fish. An afterword...