EVERYDAY SCIENCE

Detailed explanation-1: -Many of these wavelengths cannot penetrate the layers of Earth’s atmosphere and must be observed from space, whereas others-such as visible light, FM radio and TV-can penetrate to Earth’s surface. The emission of electromagnetic radiation is intimately connected to the temperature of the source.

Detailed explanation-2: -It ranges from red light (longest wavelength) through yellow, green and blue to violet (shortest wavelength). Visible light is not blocked by the Earth’s atmosphere, although clouds and dust can scatter some of the light back.

Detailed explanation-3: -Fortunately, the atmosphere protects life on earth. Long-wavelength radio waves and infrared rays also do not reach the surface. The electromagnetic waves we can generally observe on the ground consist of visible light, which is difficult for the atmosphere to absorb, near-infrared rays, and some electromagnetic waves.

Detailed explanation-4: -All visible light penetrates the atmosphere, most radio light penetrates the atmosphere, and some IR light passes through the atmosphere.

Detailed explanation-5: -The energy from the sun that reaches Earth’s surface is mostly “shortwave” radiation-mostly visible light. This energy passes freely through the atmosphere and is absorbed by Earth’s surface. The surface warms from the energy input, and some of its heat projects back to the atmosphere as infrared radiation.