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Hipervinculo Biología
How can scientists figure out what a dinosaur’s footprints looked like? When a dinosaur walked near a stream, it may have left footprints imprinted in the earth. If the stream the footprints flooded, ...
Hipervinculo Geología
The soil composition in people’s backyards containsminute particles of magnetic material called rare-earth metals.Larger quantities of rare-earth metals lie in deep underground.The particles belong to ...
Hipervinculo Geología
Can you be a mineral detective? In this cool experiment on identifying rocks and minerals for kids, you’ll develop an understanding of some of the characteristics of different minerals. Minerals look, ...
Hipervinculo Geología
There are a lot of ways to tell one mineral from another; color and shape are good indicators but they can deceive you. Mineralogists (people who study minerals) have other ways to test samples to see ...
Crystals like to form on a substrate, or base surface of some kind; the texture, composition, and surface area of the substrate influences the formation of the crystals. Use four different household o ...
Hipervinculo Geología
Did you even wonder why some rocks are round and smooth while others are broken up into small pieces? Maybe you've even discovered a rock in your backyard that's made up of several layers. If so, you' ...
Hipervinculo Geología
Minerals have many different properties. These properties are used to classify minerals and to help in knowing how minerals can be used. Some of the properties of minerals include hardness, color, shi ...
Hipervinculo Geología
She’ll be coming around the mountain, but what will her road look like? Take a real or invented mountain, model it out of clay, and discover how we can represent it using topography. So what is topogr ...
Un libro de la Universidad Nacional Autónoma de México que cuenta uno de los experimentos más ingeniosos, hecho por Eratóstenes de Cirene, para medir de manera indirecta la ...
Un libro de la Universidad Nacional Autónoma de México que intenta mostrar cómo uno de los principios físicos descubierto por Arquímedes hace varios siglos, la flota ...
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