Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Very Large Telescope wikipedia , lookup
Optical telescope wikipedia , lookup
Arecibo Observatory wikipedia , lookup
Lovell Telescope wikipedia , lookup
Reflecting telescope wikipedia , lookup
James Webb Space Telescope wikipedia , lookup
Spitzer Space Telescope wikipedia , lookup
Unit 5 Review Science 9 Astrolabe Ocular lens Celestial bodies Objective lens Telescope Doppler Effect Radio Telescope Payload Artificial Satellite GPS Frame of reference Celestial bodies Astrolabe Heliocentric Refracting telescope Spectral Lines Outer planets Reflecting telescope Red shift Staged Rocket Parallax Low Earth orbit Inner planets GCCHS Universal gravitation Spectroscopy Blue shift Geocentric Frame of reference Triangulation Gravitational Assist Charged Coupled plates Geosynchronous orbit An axis that be use to describe something’s location. Altitude and azimuth are examples. Objects we see in the sky. Includes the sun, moon, planets, stars constellations This is a device that was used to measure the altitude of a reference point in the sky. It was used for navigation. Heliocentric This is the sun centered model. It was originated by Copernicus and supported by Galileo and Kepler. Telescope A device that uses lenses and mirrors to magnify visible light to see objects far away. Geocentric This is the earth centered model. It was originated by Aristotle and supported by the Church at the time. Objective lens The lens on a telescope that is closest to the object you are looking at. Ocular lens The lens on a telescope that is closest to your eye. Refracting telescope A telescope that uses lenses to magnify the object. Reflecting telescope A telescope that uses mirrors to magnify the object. Universal gravitation Proposed by Newton, it says that there is a force of attraction between all masses in the universe. Spectroscopy This is the study of bright line and dark line spectra to determine the composition of celestial objects. Spectral Lines These are the bright line and dark line spectra formed by diffraction gratings or prisms. Doppler Effect This is the apparent shift in frequency (pitch) that occurs when the source of the sound is moving toward or away from the observer. Red Shift When the object is moving away. Blue Shift When the object is toward the observer. Triangulation parallax Radio telescope This is a method used to find distance far away objects are using 2 different reference points. (aka parallax technique) When something’s image is distorted due to the angle of observation. This is a telescope that uses radio waves instead of visible light to obtain images of distant celestial objects. The receiver looks like a big satellite dish. payload This is the object, people, explosives etc. that are the cargo in a rocket. Staged rocket This is a rocket that is made of more than one section. The sections with initial fuel tanks and rocket engines drop off when used up. Gravitational assist This is also called the sling shot effect. It is when a space craft or probe uses the gravity of a moon or planet to help propel on long space journeys. Compass Artificial satellites Low earth orbit GPS This is a device that was used to measure the azimuth of a reference point in the sky. The moon is a natural one. These are the ones we place in space for communications, GPS and remote sensing. These are satellites closer to Earth. They make more than one orbit each day. This is a device to help determine and record ad object’s location. It must be in contact with 3 satellites to work. 2 Inner planets These are the planets closer to the sun. They include: Mercury, Venus, Earth and Mars outer planets These are the planets farther from the sun. They include: Jupiter, Saturn, Uranus, Neptune. (Pluto ) 2. During a spacewalk, an astronaut must overcome many obstacles to survive. Explain how they overcome each of the obstacles listed below: Cold Temperature thermal lined Space suit, gloves lined and sealed helmet Need for Oxygen air tanks on back (breathing apparatus) sealed suit and helmet Build Up of CO2 CO2 filter in breathing apparatus Tinted and polarized visor on helmet Tether line Compressed air devices Exposure of Eyes to Damaging UV (Ultraviolet) Radiation Getting Back to the Spacecraft 3. How long does it take: The earth to rotate around once on its axis? The moon to orbit the earth? The earth to orbit the sun? A satellite in geosynchronous orbit to orbit the earth? One day About a month (27 days, 7 hours, 43 minutes, 11.6 seconds) About a year (365 days, 5 hours, 49 minutes and 1.20 seconds ) One day 3 4. When using triangulation (aka parallax technique) what is a way to increase accuracy when estimation an object’ distance? A larger baseline …. 5. Two astronauts in the international space station decide to do an experiment involving the boiling of water in a low gravitational orbit. For safety the used a pot with a fastened lid. The apply heat to the pot, and check the temperature every 30 seconds. They repeat the experiment several times, making sure that they use the same amount of water and the same starting temperature. Complete the chart below: Manipulated variable Time – they decided to take measurements every 30 seconds. Responding variable Temperature – the temperature “responded” at the time intervals that they decided upon. Control variables Volume of water used and starting temperature – these were unchanged in repeated trials of the experiment. 4