The Sun, at a mean distance of 92.96 million miles, is the closest
... huge sphere of mostly ionized gas, supports all life on Earth. It powers photosynthesis in green plants, and is ultimately the source of all food and energy. In fact, the Sun produces in 1 second the U.S. energy needs for 90,000 years! The connection and interactions between the Sun and Earth drive ...
... huge sphere of mostly ionized gas, supports all life on Earth. It powers photosynthesis in green plants, and is ultimately the source of all food and energy. In fact, the Sun produces in 1 second the U.S. energy needs for 90,000 years! The connection and interactions between the Sun and Earth drive ...
2.7 - 2.9a
... They are most common in spiral and irregular galaxies horse head nebula is one of the most widely known nebulae ...
... They are most common in spiral and irregular galaxies horse head nebula is one of the most widely known nebulae ...
Mountain Skies
... these folks as the sky turns are the two dogs. The Dog Star Sirius, the brightest star in the nighttime sky, is in the southwest. Above Sirius is the lesser or little dog consisting of only two naked eye stars, Procyon and the much dimmer Gomiesa. ...
... these folks as the sky turns are the two dogs. The Dog Star Sirius, the brightest star in the nighttime sky, is in the southwest. Above Sirius is the lesser or little dog consisting of only two naked eye stars, Procyon and the much dimmer Gomiesa. ...
STUDY GUIDE Multiple Choice Identify the choice that best
... Why is studying star clusters useful? a. because there is such a large diversity of stars in a cluster b. because they are about the same age and distance from Earth ...
... Why is studying star clusters useful? a. because there is such a large diversity of stars in a cluster b. because they are about the same age and distance from Earth ...
Big Bang
... • Nuclear fusion is an atomic reaction that fuels stars. In fusion, many nuclei combine together to make a larger one. • The net mass of the fused atomic nuclei is smaller than the sum of the constituents. This lost mass is released as electromagnetic energy, according to the mass-energy equivalence ...
... • Nuclear fusion is an atomic reaction that fuels stars. In fusion, many nuclei combine together to make a larger one. • The net mass of the fused atomic nuclei is smaller than the sum of the constituents. This lost mass is released as electromagnetic energy, according to the mass-energy equivalence ...
Lesson 37 questions – Gravitational Field - science
... Binary stars separated by a distance of 1x1011m have been observed with an orbital period of 100 days. Calculate the mass of each star. ...
... Binary stars separated by a distance of 1x1011m have been observed with an orbital period of 100 days. Calculate the mass of each star. ...
Great Astronomers of the 20th Century
... variable stars (after prototype d Cepheus) – Discovered a magnitude-period relationship-brighter stars had longer periods – All stars were essentially at the same distance ...
... variable stars (after prototype d Cepheus) – Discovered a magnitude-period relationship-brighter stars had longer periods – All stars were essentially at the same distance ...
Which of the following statements is TRUE
... Star X has a surface temperature that is 3 times higher than that of the Sun. Both stars have exactly the same radius. Which of the following statements is TRUE? A. The luminosity of the Sun is 81 times that of the star X B. The typical photon emitted by star X has a lower energy than the typical ph ...
... Star X has a surface temperature that is 3 times higher than that of the Sun. Both stars have exactly the same radius. Which of the following statements is TRUE? A. The luminosity of the Sun is 81 times that of the star X B. The typical photon emitted by star X has a lower energy than the typical ph ...
1 - Quia
... b. Mars d. Earth 24. ____________ allows Earth to sustain life. a. An abundance of liquid water c. The moon’s craters b. An oxygen-rich atmosphere d. both (a) and (b) 25. The inner planets are separated from the outer planets by a. the Oort cloud. c. the Milky Way. b. an asteroid belt. d. the moon’s ...
... b. Mars d. Earth 24. ____________ allows Earth to sustain life. a. An abundance of liquid water c. The moon’s craters b. An oxygen-rich atmosphere d. both (a) and (b) 25. The inner planets are separated from the outer planets by a. the Oort cloud. c. the Milky Way. b. an asteroid belt. d. the moon’s ...
1. Luminosity is another word for the vocabulary word ______. 2. If
... 1. Luminosity is another word for the vocabulary word _________. 2. If two stars are different colors, we can infer that they have different a. chemical compositions c. shapes b. masses d. temperature 3. Which magnitude is brightest? a. -2 c. 4 b. -4 4. The dimmest class of star is the a. O ...
... 1. Luminosity is another word for the vocabulary word _________. 2. If two stars are different colors, we can infer that they have different a. chemical compositions c. shapes b. masses d. temperature 3. Which magnitude is brightest? a. -2 c. 4 b. -4 4. The dimmest class of star is the a. O ...
Only Thirty Questions To Go (150,000 points) 1.) If the distance
... is similar to the Doppler Effect with sound from a moving train’s horn where… D – the star is heading away from us and the horn is lower in pitch. 26.) Star B appears to be 4 times brighter that Star A. Star A has an apparent visual magnitude of 3.0. The apparent visual magnitude of Star B would be… ...
... is similar to the Doppler Effect with sound from a moving train’s horn where… D – the star is heading away from us and the horn is lower in pitch. 26.) Star B appears to be 4 times brighter that Star A. Star A has an apparent visual magnitude of 3.0. The apparent visual magnitude of Star B would be… ...
Final Exam Practice Part I
... 20. Which of the waves on the right has the longest wavelength? (see diagram) 21. At some point, our sun will shrink and become a white dwarf. Why will shrinking cause the sun to turn white. 22. Our solar system formed from a Nebula. Where do Cosmologists think that nebula came from (just before it ...
... 20. Which of the waves on the right has the longest wavelength? (see diagram) 21. At some point, our sun will shrink and become a white dwarf. Why will shrinking cause the sun to turn white. 22. Our solar system formed from a Nebula. Where do Cosmologists think that nebula came from (just before it ...
Physical Attributes of Stars
... d. Identify how technology is used to observe distant objects in the sky. S4E2. Students will model the position and motion of the earth in the solar system and will explain the role of relative position and motion in determining sequence of the phases of the moon. a. Explain the day/night cycle of ...
... d. Identify how technology is used to observe distant objects in the sky. S4E2. Students will model the position and motion of the earth in the solar system and will explain the role of relative position and motion in determining sequence of the phases of the moon. a. Explain the day/night cycle of ...
Astro 101-001 Summer 2013 (Howard) Assignment #3 Due: Wed
... 1. Adams and Leverrier both predicted the position of Neptune, based on its effects on: (a) the Sun; (b) Jupiter; (c) Saturn; (d) Uranus; (e) Pluto. 2. Which of these is the most unusual feature of Pluto's orbit? (a) It lies exactly on the ecliptic; (b) It has the lowest eccentricity of any planet's ...
... 1. Adams and Leverrier both predicted the position of Neptune, based on its effects on: (a) the Sun; (b) Jupiter; (c) Saturn; (d) Uranus; (e) Pluto. 2. Which of these is the most unusual feature of Pluto's orbit? (a) It lies exactly on the ecliptic; (b) It has the lowest eccentricity of any planet's ...
The Sun and the Origin of the Solar System
... Distance: 1 AU = 150 million km away Size: Actual radius 700,000 km = 100 Earths Temperature, Luminosity (surface) T = 6000 K ...
... Distance: 1 AU = 150 million km away Size: Actual radius 700,000 km = 100 Earths Temperature, Luminosity (surface) T = 6000 K ...
Astronomy Unit Test – Chapter 21
... 23. What category of star is Sirius B? 24. Which giant is the brightest? 25. Predict what will happen when the sun runs out of fuel. 26. What is used to classify stars? 27. At which phase of the moon could a solar eclipse occur? 28. A star is twice as massive as the sun. How will its lifespan compa ...
... 23. What category of star is Sirius B? 24. Which giant is the brightest? 25. Predict what will happen when the sun runs out of fuel. 26. What is used to classify stars? 27. At which phase of the moon could a solar eclipse occur? 28. A star is twice as massive as the sun. How will its lifespan compa ...
Types of Planets and Stars
... Main Sequence Stars -- make up the majority of stars in the universe. Earth’s sun is a main sequence star. These stars vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten t ...
... Main Sequence Stars -- make up the majority of stars in the universe. Earth’s sun is a main sequence star. These stars vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten t ...
R136a1
RMC 136a1 (usually abbreviated to R136a1) is a Wolf-Rayet star located at the center of R136, the central condensation of stars of the large NGC 2070 open cluster in the Tarantula Nebula. It lies at a distance of about 50 kiloparsecs (163,000 light-years) in the Large Magellanic Cloud. It has the highest mass and luminosity of any known star, at 265 M☉ and 8.7 million L☉, and also one of the hottest at over 50,000 K.