What causes the ocean waves?
Because it is made of liquid water, the restless ocean is never still. Every day it is pulled out of shape by the tides. Once in a while it is tossed about by an undersea earthquake or volcanic eruption. These heaving upsets, however, do not make the waves which rise and fall in hills and dales on the face of the sea. These wavy heavings are caused by the winds. Strong, stormy winds press down in blustery gusts and make big waves on the ocean. Gentle breezes puff the ocean’s face up and down into little waves. Big waves push up the water ahead of them and so the waves from a howling hurricane may travel half way around the world. Scientists are now using this information to tell what weather is happening in distant places.
Now you can learn the answers to these and other questions about the earth, sea, and air through 101 fun, safe, low-cost experiments and activities that can be performed at home or in the classroom. In Earth Science for Every Kid, you’ll use a tennis ball and a marble to demonstrate a solar eclipse. You’ll make a peanut butter and jelly sandwich to understand sedimentary rock formation. And, with the assistance of a Slinky(r) and a helper, you’ll learn about the motion of water waves. Each of the 101 experiments is broken down into its purpose, a list of materials, step-by-step instructions, expected results, and an easy to understand explanation. Every activity has been pretested and can be performed safely and inexpensively in the classroom or at home.