To illustrate means to explain or clarify a concept using examples, diagrams, or visual aids. It helps make abstract ideas more understandable. For instance, to illustrate the concept of thermal expansion, one could show a metal rod expanding when heated ...
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A law is a fundamental principle or rule that describes natural phenomena consistently observed under specific conditions. In science, laws are derived from empirical evidence and experimentation. They are universally accepted and can predict outcomes, such as Newton’s laws of ...
Radiation is the transfer of energy through electromagnetic waves without requiring a medium. Unlike conduction and convection, it can occur in a vacuum. The Sun’s heat reaching Earth is an example of radiation. It involves the emission, absorption, and transmission ...
The atmosphere is the layer of gases surrounding Earth, composed mainly of nitrogen, oxygen and trace gases. It protects life by filtering harmful radiation, regulating temperature and enabling weather patterns. The atmosphere is essential for sustaining life, providing oxygen for ...