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Physics Questions

Physics Questions

What is Temperature?

What is Temperature? Temperature is a measure of how hot an object is…but what does that mean? All atoms have kinetic (movement) energy because all atoms move. Even the atoms in a solid vibrate around a fixed spot. How hot an object is reflects the amount of kinetic energy in ...

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What is the Sound Barrier?

What is the Sound Barrier? sound barrier is broken by any vehicle exceeding the speed of sound: 660mph Once thought to be an impossible speed, Chuck Yeager broke the sound barrie.r with the Bell X-1 rocket plant in 1947. As an object moves through the air, it pushes nearby air ...

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What is Radioactivity?

What is Radioactivity? Radioactivity involves the spontaneous decomposition of an unstable atomic nucleus into a more stable form, in one of three decays: alpha, beta, gamma. The nucleus becomes more stable by releasing excess energy either in the form of particles (alpha and beta) or as a wave. Fast Fact: Lead is ...

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What is Electricity?

What is Electricity? Electricity is the flow of any particle with a charge – in the case of our household supply, it is the flow of negatively charged particles called electrons (hence electricit-y). In a simple circuit, the electrons are provided by the metal in the wires (usually copper). The ...

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What is Wi-Fi?

What is Wi-Fi? Wi-Fi The wireless age has dawned, and Wi-F-i is at the heart of it. Wi-F-i is a wireless network which uses radio frequencies instead of cables to transmit data. A wireless network in not truly wireless as it is built around a source computer connected to the ...

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When does the Sky become Space?

When does the Sky become Space? Sky become Space The official boundary between the Earth’s atmosphere (sky) and space is called the Kármán line. This line lies 100km above sea level and is named after aeronautical scientist Theodore von Kármán. Aircraft generate lift due to the flow of air over their ...

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Why do Boomerangs Come Back?

Why do Boomerangs Come Back? Boomerangs work on the same principles of aerodynamics as any other flying object; the key to how a boomerang works is the airfoil. An airfoil is flat on one side but curved on the other with one edge thicker than the other – this subjects ...

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