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Ciencias Naturais (369)
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First of all, what is a hygrometer and why would you want to make one?A hygrometer is a tool used by meteorologists(scientists who study the weather) to measure how much moisture is in the air.You mig ...
It’s hard to believe, but the tiny grains of sand you see at the beach were once part of giant boulders. Over many years, these huge rocks were broken down into smaller pieces in a process called weat ...
Energy is all about action! Thermal energy is transferred in many ways. The thermal energy of a substance can be determined by adding up all the kinetic and potential energy of its molecules. Convecti ...
Hipervinculo Ciencias de la Tierra y Medioambiente
Do you wonder why the weather changes all the time? Would you like to fly an airplane someday? If you answered “yes” to either of these questions, you need to learn how air molecules move!When we feel ...
You might notice that winter forecasts of a foot or more snow are fairly common. This is very different from rain forecasts. Even in rainy areas, single rainstorms that top five inches are unusual. If ...
Hipervinculo Ciencias de la Tierra y Medioambiente
The big flash you see when lightning strikes is a natural electrical discharge between a cloud and the ground, or within a cloud. This lightning can travel as fast as 140,000 MPH and reach temperature ...
Volcanoes are very interesting. I wanted to find out what happens inside a volcano. I have read about it and also seen some videos. I made a model of volcano to see how a chemical reaction makes a mag ...
The fun of the great outdoors is too often accompanied by the sting of an annoying mosquito. You've probably tried to keep the bugs away with stinky repellent, but there has to be a better option, rig ...
The savanna is a kind of biome (a community of similar ecosystems that share the same climate) primarily made up of grasses and trees. In a savanna, the trees are more scattered than in the forest, wh ...
Shadows are sneaky things: they run ahead of you, jump behind you, and sometimes even disappear completely! Even Peter Pan had trouble catching his shadow.Believe it or not, all that sneakiness is act ...
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