Science

How to Know the Steps of the Scientific Method

By Paul McDaniel

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The scientific method refers to a series of steps that are useful when taken in the course of scientific inquiry by scholars, researchers, or anyone else interested in solving a particular problem. It is the preferred method for persons involved ... more »

How to Know the Two Types of Statistical Error

By Paul McDaniel

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In statistics and statistical analysis, hypothesis testing involves stating a null hypothesis ("There is no statistically significant difference between...") and then testing for statistical significance. If the test is not carried out ... more »

How to Know What You Can Do with a Major in Geology or Earth Science

By Paul McDaniel

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Geology is a major branch of the physical sciences that involves the study of the earth. Geology is divided into two main fields of physical geology and historical geology. The sub-branches of geology include sedimentology, petrology, geophysics, ... more »

How to Know What You Can Do with a Major in Meteorology

By Paul McDaniel

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Meteorology is the science of the atmosphere. It has its roots in math, physics, and chemistry. there are many career options in and related to meteorology and there are also many specialties within meteorology, such as: climatology, ... more »

How to Know What You Will Learn from Studying Geology

By Paul McDaniel

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Geology is the study of the earth’s history as well as the processes that continue to shape the earth today. Geologists view the earth as a place where physical and chemical processes interact within the atmospheric, ocean, and land systems. ... more »

How to Know Which Greenhouse Gases Are of the Greatest Concern

By eHow Hobbies, Games & Toys Editor

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Natural and man-made greenhouse gases are threatening the environment each day. Global warming and the destruction of the ozone layer are just two of the harmful effects of greenhouse gases, especially carbon dioxide. It's important to understand ... more »

How to Learn About Nickel

By eHow Education Editor

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Nickel, the 28th element, comprises 60,000 parts per billion of the matter in the universe. Nickel is the weakest of the three ferromagnetic elements. The following steps will aid in your search for information about this fascinating element... more »

How to Learn About Phosphorus

By eHow Hobbies, Games & Toys Editor

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Phosphorus, the 15th element, comprises 7,000 parts per billion of all matter in the universe. Phosphorus is essential for life and is one of the six bulk elements for life. The following steps will aid in your search for information about this ... more »

How to Learn About Potassium

By eHow Hobbies, Games & Toys Editor

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Potassium, the 19th element, comprises 3,000 parts per billion of all matter in the universe. Potassium is an essential element for life. The following steps will aid in your search for information about this fascinating element... more »

How to Learn About Vanadium

By eHow Hobbies, Games & Toys Editor

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Vanadium, the 23rd element, comprises 1,000 parts per billion of all matter in the universe. Vanadium makes steel and iron alloys much harder and stronger. The following steps will aid in your search for information about this fascinating element... more »

How to Learn About Zinc

By eHow Education Editor

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Zinc, the 30th element, comprises 300 parts per billion of all matter in the universe. Zinc is the fourth most commonly used metal and has many applications. The following steps will aid in your search for information about this fascinating element... more »

How to leverage sunlight hours & sun angle to boost solar electric production.

By Daniel Stouffer

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Throughout most of the United States, the average homeowner can expect 4 or 5 sun-hours per day. This is true even in rainy Seattle and most of Alaska. Each of these locations still receive about 3 or 4 sun-hours per day. This means, of course ... more »

How to light a fart on fire

By farter23

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i will teach the proper lighting techniques of fart lighting.. more »

How to Link Paper Clips Without Touching Them

By eHow Hobbies, Games & Toys Editor

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Learning how to link paper clips without them touching them is a trick that can impress your friends. There are two ways of doing it: one with a piece of paper and the other with magnets. Both produce the same results and both are easy... more »

How to Magnetize Two Pencils

By eHow Hobbies, Games & Toys Editor

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Magnetizing pencils is one of the easiest tricks in the book. This trick works best on children because they don't understand the real workings behind the "magnetism." Add this trick to your bag, and add something unexpected to your stock of ... more »

How to Magnetize With a Hammer

By eHow Hobbies, Games & Toys Editor

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The earth acts much like a magnet. For this reason, pieces of iron or steel often have a magnetic effect whey they lie in a north-south direction. For magnetism to occur, electrons need to spin in the same direction. This process can take place ... more »

How to Make a Barcode

By solmri

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Learn to make your own barcodes on your pc.. more »

How to Make a Crystal Garden

By eHow Hobbies, Games & Toys Editor

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Chemistry fascinates some children, especially when they see the different reactions occur right before their eyes. Creating a crystal garden from common household elements can demonstrate how certain chemicals interact to form a new element. The ... more »

How to Make a Fizzy Fountain

By eHow Hobbies, Games & Toys Editor

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You may not be able to construct those illuminated fountains that delight tourists who visit the casinos in Las Vegas, but you don't need much room to create a fizzy fountain. You need only a few household items to produce an impressive effect in ... more »

How to Make a Hologram Illusion

By eHow Hobbies, Games & Toys Editor

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Whether you like optical illusions, magic or simply want to impress your friends, a hologram illusion may do the trick. Holograms appear as 3D images and typically result from laser or mirror manipulations, professional drawing or paint software ... more »

How to make a homemade aspirator vacuum

By squestered

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Aspirator vacuums are used frequently in laboratories to help evaporate liquids by reducing the atmospheric pressure inside a container. The article below uses readily available products to render a usable aspirator vacuum... more »

How to Make a Household Rocket Motor

By eHow Hobbies, Games & Toys Editor

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If you like science experiments and want to use one for your own entertainment, you can launch a rocket constructed from items you can gather around the house. For an extra boost, you should construct this "motor" before you head out to the ... more »

How to Make a Light From Batteries

By eHow Hobbies, Games & Toys Editor

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Illuminating a light with a battery will teach children how electrons work as they move through an electric current. To make the light bulb power on, you must complete the circuit of electricity to the bulb and back from the battery... more »

How to Make a Liquid Into a Solid

By eHow Hobbies, Games & Toys Editor

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You can make a liquid into a solid in various ways. The method you employ largely depends on what kind of liquid you have and what kind of solid you want to get. For instance, there's a significant difference between a pure liquid (such as water) ... more »

How to Make a Magnet With Only Metal

By eHow Hobbies, Games & Toys Editor

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You need a magnet to in order to make a magnet with only metal. There is a process in which the particles of a metal becomes polarized. This method causes the particles to get into a pair of parallel lines, causing just metal to become either a ... more »

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