TelescopeNotesWYB

Define the following terms

Energy- power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines. Radiation- energy that comes from a source and travels through some material or through space. Wavelength- the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave. Frequency- the rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second. Reflect- (of a surface or body) throw back (heat, light, or sound) without absorbing it. Refract- (of water, air, or glass) make (a ray of light) change direction when it enters at an angle. Absorb- take in or soak up (energy, or a liquid or other substance) by chemical or physical action, typically gradually.

Information from class notes, The order is from lowest energy on the left to highest energy. Gamma Ray Electromagnetic Spectrum X-Ray UV Radio Visible Microwave

Answer each question as TRUE or FALSE. After each answer, write one or two sentences from the website that provides evidence to support your answer. []


 * 1) The electromagnetic spectrum is made up of only visible light. FALSE because it contains many other things that are in the spectrum
 * 2) Microwaves are used to communicate with satellites because they can pass through parts of our atmosphere TRUE because these parts are used for many things like radar images and even weather.
 * 3) Mechanical waves such as sound cannot travel through space TRUE because in order for the waves to travel it has to have some kind of medium.
 * 4) Waves in the electromagnetic spectrum with long wavelengths have the most energy FALSE because it has lowest energy.
 * 5) Because we knowing how fast light travels and how it is reflected, we can use this information to figure out how far away objects are. TRUE because we can use light years.
 * 6) Different types (wavelengths) of light are refracted (bent) differently. TRUE because different wavelengths of light are slowed at different rates which causes them to bend at different angles.
 * 7) EXTRA CREDIT Using question 6: Why do you think this would be a problem when making a telescope using lenses? If different colors bend differently, the images we see far away will be distorted and not in focus.
 * 8) Even though we can’t see it with our eyes, cooler objects such as planets and people emit infrared waves that can be studied with special instruments. TRUE because many objects in the universe are too cool and faint to be detected in visible light but can be detected in the infrared.
 * 9) Ultraviolet light from space is easily researched using ground telescopes. FALSE because much of our earth absorbs a lot of energy and scientists use data from sattelites above the atmosphere.
 * 10) A star that emits mostly yellow visible light is hotter than a red star. TRUE because our sun produces more yellow light than any other.
 * 11) Absorption lines in the visible spectra and patterns of reflectance can be used to tell us what distant objects like stars and planets are made of. TRUE because these patterns can provide important scientific clues that reveal hidden properties in the universe.

Reflection Questions

1. What characteristic does your group feel is most important in your ranking system? The characteristic that's most important to me is the maximum viewing time. 2. Why do you feel this is more important than the others? 3. Can you properly explain your selection process?

Readiness Questions 1. What is the Problem? they need someone to test the telescope 2. Who is the client? 3. What is the client asking your team to do? 4. What things do you need to include in your solution? 5. Do you think there is more than one correct answer to what the client is asking? Why or why not?