Download e-book for kindle: Dig It: How to Collect Rocks and Minerals (Reader's Digest by Susan Tejada, Steve Seymour, Ed French

By Susan Tejada, Steve Seymour, Ed French

ISBN-10: 1575844265

ISBN-13: 9781575844268

ISBN-10: 1590196333

ISBN-13: 9781590196335

Were you aware that the complete global lies at your toes? rather! Rocks and minerals are like little home windows at the internal workings of Planet Earth. you simply need to comprehend the place to discover them and what you're looking at. that is the place Dig It! is available in. full of fingers on actions and enjoyable evidence, it will train you the fundamentals of rocks and minerals and the way they make a distinction in exactly approximately all the things of your existence. you are going to additionally locate tips about discovering and construction a rock choice of your own, and magazine pages for conserving a checklist of your unearths. even if you're sticking as regards to domestic or are wandering farther afield, you will find lots of cool rocks and minerals with a bit attempt. we have now even given you a starter assortment. So what are you looking ahead to? seize Dig It! and begin digging!

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Additional resources for Dig It: How to Collect Rocks and Minerals (Reader's Digest Explorer Guides)

Sample text

Water seeps inside hollows left by gas bubbles. Minerals in the water then form layers of crystals on the walls. 33 Eat Your Minerals! Minerals are found in more places than rocks. Your teeth are made of the mineral apatite. Your body stores minerals too. You get the minerals you need from the food you eat. Milk and cheese contain calcium, which hardens your teeth and bones. Meat and some vegetables contain iron, which helps your blood cells make hemoglobin, a substance needed to carry oxygen to other cells.

How did these fossils get from under all that rock to the ground beneath your feet? When Earth’s crust shifted, the fossils were pushed up to the surface. Over time, wind and water wore away the rock around them. At last the fossils lay exposed—ready for you to discover them. Most plants and animals of long ago decayed and disappeared completely. Only a few survived as fossils. Without them, scientists would have little idea of what Earth was like before we were around to observe it. Press Time Some fossils formed when living things left an imprint in ancient mud.

Your teeth are made of the mineral apatite. Your body stores minerals too. You get the minerals you need from the food you eat. Milk and cheese contain calcium, which hardens your teeth and bones. Meat and some vegetables contain iron, which helps your blood cells make hemoglobin, a substance needed to carry oxygen to other cells. Your nerves need sodium to do their job. You can get it from salt. You also need potassium, iodine, and zinc to help keep you healthy. Hot chocolate has calcium and iron.

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Dig It: How to Collect Rocks and Minerals (Reader's Digest Explorer Guides) by Susan Tejada, Steve Seymour, Ed French


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