[BI110] - Final Exam Guide - Everything you need to know! (53 pages long)
Document Summary
Sun converts matter into energy in the form of electromagnetic radiation. Matter: occupies space and has mass, all tangible substances made of matter. Energy: capacity to do work; comes in many forms (electromagnetic radiation: visible light, uv light; chemical energy, kinetic energy) All forms of energy are interconvertable; energy cannot be created nor destroyed but only transferred. Sun produces every form of radiation on the electromagnetic spectrum. Colors on spectrum are different due to wavelengths. Longest waves lowest energy; shortest wavelengths highest energy. Light: electromagnetic radiation that humans can detect with their eyes (wave of discrete particles called photons) Wavelength: distance between 2 successive peaks on the spectrum. To be used, light energy must be absorbed by molecules called pigments. Light inside a matter can either be absorbed, reflected, or transmitted. Plants are green due to the fact that every color is absorbed except for green.
