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George Brown College Canada GSCI 1009 Quiz 4 1)tells us about an object's motion toward or away from us

Earth Science

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4. Radio waves are:
5. You observe a distant galaxy. You find that a spectral line of hydrogen that is shifted from its normal location in the visible part of the spectrum into the infrared part of the spectrum. What can you conclude?
6. A unique pattern indicating the presence of a particular molecule, based on specialized analytic techniques such as pass or x-ray spectroscopy, used to identify a pollutant, drug, contaminant, or other chemical in a test sample is called:
7. How does wavelength relate to frequency?
8. Suppose you look at a detailed spectrum of visible light from some object. How can you decide whether it is an emission line spectrum or an absorption line spectrum?
9. From shortest to longest wavelength, which of the following correctly orders the different categories of electromagnetic radiation?
10. Which of the following statements is false?
11. The warmth of the sunlight tells us that light is a form of energy. We can measure the flow of energy in light in units of watts: 1 watt = 1 joule. Interactions between light and matter determine the appearance of everything around us.
12. Which of the following statements about thermal radiation is always true?
13. What are the basic types of Spectra?
14. Suppose you want to know the chemical composition of a distant star. Which piece of information is the most useful to you?
15. Which forms of light are lower in energy and frequency than the light that our eyes can see?
16. The set of spectral lines that we see in a star's spectrum depends on the star's: