Far apart.
high sound particles are near, and low sound as far apart particles.
Compression is the part of a longitudinal wave where the particles of the medium are crowded together. Rarefaction is the part where the particles are spread apart.
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The two types of regions in a compressional wave are compression regions, where particles are close together and experience high pressure, and rarefaction regions, where particles are spread apart and experience low pressure.
Gas has particles that are far apart from each other. These particles have a lot of energy and move freely in all directions, resulting in a high level of space between them.
Cosmic rays are high-energy particles from space that continuously rain down on the Earth's atmosphere. They originate from sources such as supernovae, black holes, and other cosmic events. These particles can interact with the Earth's atmosphere, leading to the production of secondary particles and radiation.
When high levels of charged particles penetrate the Earth's atmosphere, it can lead to phenomena like the auroras (Northern and Southern Lights). These particles interact with gases in the atmosphere, producing colorful light displays in the polar regions. In extreme cases, such as a solar storm, it can also disrupt communication systems, satellites, and power grids.