Describing The Universe
In terms of time,distance,and organization
What is the value of astrnomy?
The value of astronomy is important for the potential benefits to humans. Astronomy is the study of the universe. In the universe you are able to find stars, back holes, nebulas, meteors, and our solar system. Our solar system Ana's eight planets they are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Scientist who study the universe are called astronomers.
Describe: Characteristics of the universe in terms of time, distance, and organization.
Identify: The visible and non visible parts of the electromagnetic spectrum.
Compare: Refracting telescopes and reflecting telescopes.
Explain: How telescopes for non visible electromagnetic radiation differ from light telescopes.
Describing the Electromagnetic Spectrum
Visible and Invisible Light
The electromagnetic spectrum is all of the wavelengths of electromagnetic radiation. Radio waves, X-rays, and light are all examples of electromagnetic radiation. It is proven that the human eye can only see wavelengths in the visible light range of the spectrum. The shortest wavelengths of the spectrum are the blue and violet and the longest are the red and orange. When white light passes through a prism the light is broken into a set of colors. The invisible electromagnetic spectrum includes infrared, microwave, radio, ultraviolet, x-ray, and gamma rays. It's wavelengths of red light cannot be seen by the human eye. In order to detect them you need to use special instruments. Both visible and invisible have some features alike. For example, they both travel in waves, both have energy and radiation, all the light travels at the same speed, and they both have electric and magnetic fields.