UV SURFACE ENVIRONMENT OF EARTH
... planets through geological time and therefore the conditions for the origin and evolution of life. Depending on the intensity, UV radiation can be both useful and harmful to life as we know it. UV radiation can inhibit photosynthesis and cause damage to DNA and other macromolecule damage [1,2]. Howe ...
... planets through geological time and therefore the conditions for the origin and evolution of life. Depending on the intensity, UV radiation can be both useful and harmful to life as we know it. UV radiation can inhibit photosynthesis and cause damage to DNA and other macromolecule damage [1,2]. Howe ...
PowerPoint - Chapter 2 - University of Detroit Jesuit High School
... Telling Time in Different Time Zones Time is measured from Royal Greenwich Observatory in Greenwich, England (also place where Prime Meridian is measured) – Referred to as “Greenwich Mean Time” or “________” ...
... Telling Time in Different Time Zones Time is measured from Royal Greenwich Observatory in Greenwich, England (also place where Prime Meridian is measured) – Referred to as “Greenwich Mean Time” or “________” ...
Putting Earth In Its Place
... Distances in our solar system are so big that we need to use different units of measurement to keep the numbers small. Two commonly used units of measurement for the solar system include Astronomical Units and Earth Radii. Astronomical Units: When discussing the distances between planets and the sun ...
... Distances in our solar system are so big that we need to use different units of measurement to keep the numbers small. Two commonly used units of measurement for the solar system include Astronomical Units and Earth Radii. Astronomical Units: When discussing the distances between planets and the sun ...
The Hot-plate Model of a Star Model of Stars— 29 Sep •
... At greater distances from star, light is spread over larger area. Flux is lower. ...
... At greater distances from star, light is spread over larger area. Flux is lower. ...
Chemical Evolution of the Galaxy and its satellites
... • The SFR is the star formation rate (how many solar masses go into stars per unit time) • The IMF is the initial stellar mass function describing the distribution of stars as a function of stellar mass ...
... • The SFR is the star formation rate (how many solar masses go into stars per unit time) • The IMF is the initial stellar mass function describing the distribution of stars as a function of stellar mass ...
Composition of the Sun - Indiana University Astronomy
... strength, and vs. wavelength. You may save this file for printing by using the "f" key in MOOG at the appropriate time. MOOG also writes a summary of its output to the file "out2." The solar sub-directory includes additional model atmospheres to allow you to determine how sensitively your derived ir ...
... strength, and vs. wavelength. You may save this file for printing by using the "f" key in MOOG at the appropriate time. MOOG also writes a summary of its output to the file "out2." The solar sub-directory includes additional model atmospheres to allow you to determine how sensitively your derived ir ...
Stellar Spectroscopy during Exoplanet Transits
... Line profile changes during exoplanet transit. Red: Ratios of line profiles relative to the profile outside transit. This simulation sequence from a CO5BOLD model predicts the behavior of an Fe I line ( 620 nm, = 3 eV) during the first half of a transit across the stellar equator by a bloated Jup ...
... Line profile changes during exoplanet transit. Red: Ratios of line profiles relative to the profile outside transit. This simulation sequence from a CO5BOLD model predicts the behavior of an Fe I line ( 620 nm, = 3 eV) during the first half of a transit across the stellar equator by a bloated Jup ...
Stefan-Boltzmann Law Problems
... information in the question to find the answer directly. The Stefan-Boltzmann Law is a relationship between luminosity, temperature and radius. In this problem we are asked to determine the radii ratio of the stars given that the two stars have roughly the same temperature, but we are not given lumi ...
... information in the question to find the answer directly. The Stefan-Boltzmann Law is a relationship between luminosity, temperature and radius. In this problem we are asked to determine the radii ratio of the stars given that the two stars have roughly the same temperature, but we are not given lumi ...
Lecture06d
... Equating the gravitational force with the centripetal force shows that, for any two planets (assuming circular orbits, and that the only gravitational influence is the Sun): ...
... Equating the gravitational force with the centripetal force shows that, for any two planets (assuming circular orbits, and that the only gravitational influence is the Sun): ...
Explosion of Sun - Scientific Research Publishing
... core fuse hydrogen into helium. Each second, more than 4 million tonnes of matter are converted into energy within the Sun’s core, producing neutrinos and solar radiation; at this rate, the sun will have so far converted around 100 earth-masses of matter into energy. The Sun will spend a total of ap ...
... core fuse hydrogen into helium. Each second, more than 4 million tonnes of matter are converted into energy within the Sun’s core, producing neutrinos and solar radiation; at this rate, the sun will have so far converted around 100 earth-masses of matter into energy. The Sun will spend a total of ap ...
Evolution and the Big Bang, ET Life Lec. 6, Jan 18, 2002
... • Main sequence: center of star becomes hot ...
... • Main sequence: center of star becomes hot ...
Planetary Distances on the Playground
... planets from the Sun; since each planet orbits the Sun with a different velocity, the planets spend most of their time somewhere along their near-circular orbit around the Sun, rarely along a straight line with the other planets. DISCUSSION: Are the planets evenly spaced? Is there some pattern you c ...
... planets from the Sun; since each planet orbits the Sun with a different velocity, the planets spend most of their time somewhere along their near-circular orbit around the Sun, rarely along a straight line with the other planets. DISCUSSION: Are the planets evenly spaced? Is there some pattern you c ...
ASTROPHYSICS LAB: THE LUMINOSITY OF THE SUN
... because only 11% of the bulb’s luminosity is in the visual, the number substituted for L bulb should have been only 11% of 200 W (or 22 W).... if 22 W had been substituted for L bulb the result for Lsun would have come out 9 x smaller.... there is a similar, counterbalancing effect (see below) due t ...
... because only 11% of the bulb’s luminosity is in the visual, the number substituted for L bulb should have been only 11% of 200 W (or 22 W).... if 22 W had been substituted for L bulb the result for Lsun would have come out 9 x smaller.... there is a similar, counterbalancing effect (see below) due t ...
View Teacher`s Guide PDF (F.P.O.)
... one another. Give the cards to half of the class. If there are more than thirty children, make asteroids and meteoroids. A child with a card picks a child from the opposite line to identify his/her picture and then turns it around to reveal the correct answer. The selected child takes the card if he ...
... one another. Give the cards to half of the class. If there are more than thirty children, make asteroids and meteoroids. A child with a card picks a child from the opposite line to identify his/her picture and then turns it around to reveal the correct answer. The selected child takes the card if he ...
Weekly Homework Questions #2, Sep. 7, 2010
... 1. What (very approximately) is the diameter of the Earth in light units? (a) less than 0.1 seconds (b) 5 seconds (c) 32 seconds (d) 3.5 minutes 2. As time goes on, why does it become increasingly difficult to communicate with deep-space probes like Voyager? (a) the time for the signal to get there ...
... 1. What (very approximately) is the diameter of the Earth in light units? (a) less than 0.1 seconds (b) 5 seconds (c) 32 seconds (d) 3.5 minutes 2. As time goes on, why does it become increasingly difficult to communicate with deep-space probes like Voyager? (a) the time for the signal to get there ...
Indirect heat energy
... 2. Draw a picture of the Earth’s revolution around the Sun. 5. What is the Earth’s tilt? ______________________________ 6. Why do the stars appear to move around the North Star? ...
... 2. Draw a picture of the Earth’s revolution around the Sun. 5. What is the Earth’s tilt? ______________________________ 6. Why do the stars appear to move around the North Star? ...
ring - The Evergreen State College
... Many stars - including the sun - have magnetic fields, and many - including the sun - ring with sound waves. Why do stars ring? What, if anything, do magnetic fields have to do with the ringing? What light does this shed on the lives of stars and life on Earth? ...
... Many stars - including the sun - have magnetic fields, and many - including the sun - ring with sound waves. Why do stars ring? What, if anything, do magnetic fields have to do with the ringing? What light does this shed on the lives of stars and life on Earth? ...
Study Guide for 1ST Astronomy Exam
... Describe the essentials of the geocentric model of the Universe of Aristotle and Ptolemy. o The position and motion of the Earth o The nature of terrestrial and celestial matter o The role of epicycles in the Ptolemaic model of planetary motion. Where is a planet on its epicycle when it goes ret ...
... Describe the essentials of the geocentric model of the Universe of Aristotle and Ptolemy. o The position and motion of the Earth o The nature of terrestrial and celestial matter o The role of epicycles in the Ptolemaic model of planetary motion. Where is a planet on its epicycle when it goes ret ...
Homework # 2, due 17 Feb
... 4. Do parts (a), (b) and (c) of problem 2.11. Without doing part (d), do you think the observable stars able in regions B and C would be more or less metal rich than what is actually in your model sky? 5. Consider hydrogen gas in the galactic plane. Assume the Sun is at a distance of R0 = 8 kpc from ...
... 4. Do parts (a), (b) and (c) of problem 2.11. Without doing part (d), do you think the observable stars able in regions B and C would be more or less metal rich than what is actually in your model sky? 5. Consider hydrogen gas in the galactic plane. Assume the Sun is at a distance of R0 = 8 kpc from ...
Chapter 2: Solar Radiation and the Seasons
... 10. The angle of the sun. 11. The latitude of the solar declination (the point where the sun is directly overhead at noon, or sub-solar point) reaches its northern maximum on the June solstice at 23 1/2° north latitude (the Tropic of Cancer), and moves to the Equator (0° latitude) on the September e ...
... 10. The angle of the sun. 11. The latitude of the solar declination (the point where the sun is directly overhead at noon, or sub-solar point) reaches its northern maximum on the June solstice at 23 1/2° north latitude (the Tropic of Cancer), and moves to the Equator (0° latitude) on the September e ...
Lecture15-ASTA01 - University of Toronto
... • That is in agreement with the age of the Sun, which is estimated to be (5 +-1.5) Gyr • This has been calculated using mathematical models of the sun’s interior that are completely independent of meteorite radioactive ages. • Apparently, all the bodies of the solar system formed at about the same t ...
... • That is in agreement with the age of the Sun, which is estimated to be (5 +-1.5) Gyr • This has been calculated using mathematical models of the sun’s interior that are completely independent of meteorite radioactive ages. • Apparently, all the bodies of the solar system formed at about the same t ...