A Star gives off most of its light in the infrared. Star B gives off most of its light in the ultraviolet. Which of the following statements is true? 1) Star A is cooler than Star B. 2) Star B is cooler than Star A. 3) Star A and Star B have the same temperature. 4) There is not enough information to answer this question.
What type of spectrum is produced by a hot, thin gas? Answer: emission spectra A blue photon of light and a red photon of light leave a distant star. Which photon of light has more energy? 1) The blue photon has more energy. 2) The red photon has more energy. 3) Both photons have the same amount of energy.
What type of spectra can be described as having light emitted at all wavelengths with no sharp peaks or dips? 1) Continuous spectra. 2) Emission spectra. 3) Absorption spectra.
If light is emitted from a source moving toward you the speed of the light will appear faster than it truely is. 1) True. 2) False.
The emission lines of an object moving toward you will 1) appear to be at longer wavelengths than if it was at rest. 2) appear to be at shorter wavelengths than if it was at rest. 3) appear to be moving faster than if it was at rest. 4) appear to be moving slower than if it was at rest.
Star A gives off most of its light in the infrared. Star B gives off most of its light in the ultraviolet. Which star give off the most light per area. 1) Star A. 2) Star B. 3) Star A and Star B give off the same amount of light per area.
4) There is not enough information to answer this question.
Star A has a temperature of 5000 K. Star B has a temperature of 8000 K. What can be said about the amount of light per area emitted from each star? 1) Star A gives off more light per area than Star B. 2) Star B gives off more light per area than Star A. 3) Star A and Star B give off the same amount of light per area. 4) There is not enough information to answer the question.
Star A gives off most of its light in the infrared. Star B gives off most of its light in the ultraviolet. Which star give off the most total amount of energy? Star 1) A. 2) Star B. 3) Star A and Star B give off the same total amount of energy. 4) There is not enough information to answer this question.
What type of spectra can be described as having light emitted all wavelengths, with some dark bands at very specific wavelengths of light? 1) Continuous spectra. 2) Emission spectra. 3) Absorption spectra.
Put the following types of light in order of decreasing (longest to shortest) wavelength. __1__ __7__ __5__ __2__ __3__ __6__ __4__ Radio Waves Gamma Rays Ultraviolet Microwaves Infrared X-rays Visible
What type of spectrum is produced by a sold, liquid or dense gas at almost any temperature? Answer: continuous spectra What type of spectra is produced by a continuum light (such as from a light bulb) passed through a cool, thin gas? Answer: absorption spectra
What type of spectra can be described as having light emitted at only very specific wavelengths of light? 1) Continuous spectra. 2) Emission spectra. 3) Absorption spectra.
Star A is 4 times further away than Star B. Both stars have the same intrinsic brightness. What can we say about the apparent brightness of the two stars as seen from the Earth? 1) Star A appears 4 times brighter than Star B. 2) Star A appears 16 times brighter than Star B. 3) Star B appears 4 times brighter than Star A. 4) Star B appears 16 times brighter than Star A.
Star A has a temperature of 5000 K. Star B has a temperature of 8000 K. What can be said about the total amount of energy given off by each star? 1) Star A gives off more total energy than Star B. 2) Star B gives off more total energy than Star A. 3) Star A and Star B give off the same amount of energy. 4) There is not enough information to answer this question.
A blue photon of light and a red photon of light leave a distant star at the same time. Assuming that these photons are always travelling in a vacuum, which of the following statements is true? 1) The blue photon reaches the Earth first. 2) The red photon reaches the Earth first. 3) Both photons reach the Earth at the same time.