The Basics of Electric Circuits

The Basics of Electric Circuits

The Basics of Electric Circuits The Basics of Electric Circuits is the continuous flow of electrons through a conducting material (like a copper wire). Electrons are invisible so to understand the basics of how circuits work, it helps to examine a mechanical system that behaves in many ways similar to ...

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Turbulence: All Mixed Up

Turbulence: All Mixed Up

Turbulence: All Mixed Up Turbulence If you’ve ever ridden in an airplane, you might have some idea what turbulenc-e is. When an airplane flies through a turbulent place in the atmosphere it will bounce around a bit as the wind outside blows the plane in different directions. Nothing to worry ...

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Pressure

Pressure

Pressure Pressure When you “blow up” a balloon, you are raising the pressur-e on the inside of the balloon. That makes the rubber in the balloon stretch, and the balloon gets bigger. Pressur-e is an idea scientists use to describe how gases and liquids “push” on things. Air has pressur-e. ...

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The Plasma State

The Plasma State

The Plasma State Plasma is known as the fourth state of matter. The other three states are solid, liquid and gas. In most cases, matter on Earth has electrons that orbit around the atom’s nucleus. The negatively charged electrons are attracted to the positively charged nucleus. Remember, opposites attract! So the electrons stay in orbit around the ...

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Gas

Gas

Gas Gas is one of the four common states of matter. The three others are liquid, solid, and plasma. There are also some other exotic states of matter that have been discovered in recent years. The air in Earth’s atmosphere is mostly a mixture of different types of gases. A ga-s usually has much lower density than a ...

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Liquids

Liquids

Liquids Liquids is one of the four common states of matter. The three others are gas, solid, and plasma. There are also some other exotic states of matter that have been discovered in recent years. A liquid does not have a fixed shape, like a solid; instead it takes on the shape of the ...

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What is a Fluid?

What is a Fluid?

What is a Fluid? What is a Fluid? A fluid is anything that would spill or float away if it weren’t in a container (unless it’s big enough to be held together by gravity like a star). If you can stir it up with a spoon or blow it through ...

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Orbit Shapes Interactive Animation

Orbit Shapes Interactive Animation

Orbit Shapes Interactive Animation This interactive animation shows two important features of orbits – shape and size. Orbits are ellipses. An ellipse can be like a circle, or it can be long and skinny. Mathematicians and astronomers use the term “eccentricity” to describe the shape of an orbit. An orbit shaped ...

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