In the context of the Sun's atmosphere, discuss the important properties of spectra
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Spectra of the Sun and other stars are formed as light passes from their photospheres outward through their atmospheres. Three important properties of spectra are the following:a. There are three kinds of spectra described by three simple rules. When you see one of these types of spectra, you can recognize the arrangement of matter that emitted the light. Dark (absorption) lines in the Sun's spectrum are caused by atoms in the Sun's (or Earth's) atmosphere between you and the Sun's photosphere. The photosphere itself produces a blackbody (continuous) spectrum.b. The wavelengths of the photons that are absorbed by a given type of atom are the same as the wavelengths of the photons emitted by that type of atom; both are determined by the electron energy levels in the atom. The emitted photons coming from a hot cloud of hydrogen gas have the same wavelengths as the photons absorbed by hydrogen atoms in the Sun's atmosphere. Although the hydrogen atom produces many spectral lines from the ultraviolet to the infrared, only three hydrogen lines are visible to human eyes.c. Most modern astronomy books display spectra as graphs of intensity versus wavelength.
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If an object's orbital velocity exceeds a celestial object's escape velocity, the object will follow closed orbits
a. True b. False Indicate whether the statement is true or false
A water wave passes by a floating leaf that is made to oscillate up and down two complete cycles each second, which means that the wave's frequency is
A) 0.5 Hz. B) 1 Hz. C) 2 Hz. D) 3 Hz. E) 6 Hz.
Saturn's 1990 white spot had some similarities to Jupiter's Great Red Spot. Discuss some of the similarities and differences. Speculate as to what might cause these
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The solar system is a complex system of moving masses held together by ______________ forces
Fill in the blank(s) with correct word