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NES Earth and Space Science (307) Practice Tests & Test Prep by Exam Edge

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NES Earth and Space Science Sample Test

1 of 5

Which of the following states of matter is observed in lightning?

Correct Answer:

plasma

the correct answer to the question of which state of matter is observed in lightning is "plasma." plasma is often considered the fourth state of matter, distinct from the familiar solid, liquid, and gas states. it is formed when gases are heated or subjected to strong electromagnetic fields, causing the atoms within them to become ionized.

in the case of lightning, the intense electrical energy involved heats the air around it to such an extent that the gases within the air ionize. this means that the electrons are stripped away from their atoms, creating a mixture of free electrons and ions. this ionized gas becomes plasma, which is capable of conducting electricity and thus allows the lightning bolt to travel through the atmosphere.

the properties of plasma are quite unique. since it is made up of charged particles (ions and electrons), it is highly conductive and responsive to electromagnetic fields. these characteristics are what enable plasma to carry the electrical charge of a lightning bolt from clouds to the earth or between clouds.

furthermore, plasma is not only found in lightning. it is actually the most common form of matter in the universe, observed in stars including our sun, where nuclear fusion reactions create vast quantities of ionized gases. closer to earth, plasma is used in technologies such as fluorescent lights and plasma tvs, where gas is ionized to produce light.

understanding plasma's role in phenomena like lightning helps in appreciating the complexity and diversity of the states of matter beyond the traditional solid, liquid, and gas, highlighting the dynamic and interconnected nature of the physical world.