essential question\n20. how is scientific notation used in the real world?

Brief Explanations:

Scientific notation is used in various real - world scenarios. In astronomy, it helps represent distances between celestial bodies like the distance from Earth to the Sun (1.496×10⁸ kilometers). In physics, it's used for very small values such as the mass of an electron (9.10938356×10⁻³¹ kilograms). In chemistry, it can represent Avogadro's number (6.022×10²³). It simplifies writing and calculations involving extremely large or small numbers.

Answer:

Scientific notation is used in astronomy for celestial distances, in physics for small particle masses, in chemistry for large molecular counts, etc., to simplify representation and calculations of very large or small numbers.