The solar system C. Our own Milky Way galaxy D. A planetary nebula Feedback Correct Marks for this submission: 5.00/5.00. Question 4 Correct Mark 5.00 out of 5.00 Flag question Question text Astronomers can use telescopes on the ground to observe electromagnetic radiation of some wavelengths, but other wavelengths are
1 AU b. 149,600,000 km c. 8.3 light-minutes d. all of the above 5. Distances between stars are usually measured in a. light-minutes b. astronomical units c. light-days d. light-years 6. Einstein developed an equation that changed ideas about the sun’s energy source by describing the relationship between a. mass and energy b. gravity
Sunspots near the Sun's equator rotate at a faster rate than those near the solar poles. The following high resolution image shows a close-up view of a moderately large sunspot. The field of view covers about 60000 km horizontally, and 38000 km vertically. The penumbral diameter of this sunspot is about 16500 km; the Earth, with an equatorial radius of 6378 km, would cover up the umbra but not the penumbra. Sunspots can be quite small ([IMAGE]1500 km diameter), and reach sizes up to 50000 km.
Six of the planets are orbited by one or more natural satellites. Jupiter is the largest, at 318 Earth masses, while Mercury is smallest, at 0.055 Earth masses. The names for the planets in the Western world are derived from the naming practices of the Romans, which ultimately derive from those of the Greeks and the Babylonians. Today, most people in the western world know the planets by names derived from the Olympian pantheon of gods. When the Romans studied Greek astronomy, they gave the planets their own gods' names: Mercury (for Hermes, God of Commerce and Thievery), Venus (Aphrodite, Goddess of Wisdom), Mars (Ares, God of War), Jupiter (Zeus, King of Gods), Saturn (Cronus, father of Zeus), Neptune (Poseidom , God of Ocean), Pluto (Hades, God of Underworld) and Uranus (Rhea, Goddess of life).
The energy of the three photons has three times the energy of the one photon, the energy of n photons of light is E=nh, E=nhc/ (2)(704nm)1.04 (3)(451nm). The energy of two photons corresponding to a wavelength of 451 blue light , is 1.04 times the energy of three photons corresponding to wavelength 704nm red light. f. A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10−6m. Could the electron make a transition from the ground state to a higher energy level? If it does make a transition, indicate which one.
The theory of Black Holes and its process is one of the most unique studies of the universe, in that with each discovery made, we un-lock closed doors to knowledge of how the universe was made. In 1798 a French Mathematician Pierre Simon de Laplace came up with the first theory of a Black Hole. He agreed with Newton, that when enough mass is added to a star like the sun, the gravitational pull would become so great that the escape velocity would equal the speed of light. Therefore, the star would blink out and become an invisible star. More than a century later, Einstein, came up with the theory of relativity.
Solar System Scavenger Hunt – submit to the dropbox once you have completed the quiz. You must submit the form to get credit for the quiz. Websites to help you get started. You may use others. http://solarsystem.nasa.gov/planets/ http://solarsystem.nasa.gov/planets/profile.cfm?Object=SolarSys&Display=Moons http://solarsystem.nasa.gov/planets/profile.cfm?Display=Moons http://nasa.gov use search window to search for topics http://www.go-astronomy.com/planets/planet-moons.htm http://messenger.jhuapl.edu/ http://nineplanets.org/ |What is the hottest planet in our solar system?
Direct motion and retrograde motion both occur with Mars, direct motion is when the planet seems to be going forward, and retrograde is when it seems to be going backwards. Many astronomers have noticed this and have tried to come to a solution as to why it occurs. Eudoxus of Cnidus Eudoxus of Cnidus came up with the first theory as to why retrograde motion occurs. He thought that there was a system of spheres, a small sphere in the middle on one axis and a larger sphere on another axis; both of the axis’ are offset. The axis of the smaller middle sphere is embedded in the outer sphere so they share the same motion.
Astronomy is a natural science which is the study of celestial objects, the physics, chemistry, and evolution of such objects, and phenomena that originate outside the atmosphere of Earth, including supernovae explosions, gamma ray bursts, and cosmic microwave background radiation. cosmology, is concerned with studying the universe as a whole. Astronomy is one of the oldest sciences. The early civilizations in recorded history, such as the Babylonians, Greeks, Indians, Egyptians, Nubians, Iranians, Chinese, and Maya performed methodical observations of the night sky. However, the invention of the telescope was required before astronomy was able to develop into a modern science.
Navigators can use the astrolabe to measure the position of the Sun and the bright stars and combine the information from the metal plate for adjustable latitude (Figure4). Then, navigators can determine the latitude (Pope 391). As vessels maintain this latitude in fixed position, they can travel to the predetermined point. To conclude, both instruments have advantages and disadvantages. Magnetic compasses can provide direction information because they are controlled by the magnetic field.