Test: astronomy #3 Quizlet PDF

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Test: astronomy #3 | Quizlet

2020-09-24, 1 :21 PM

NAME

27 Multiple choice questions 1. From longest to shortest wavelengths, order the following types of electromagnetic radiation.

0

A. gains enough energy to leave the orbits surrounding the nucleus B. true C.

1. Radio 2.Microwave 3.Infrared 4.Visible 5.Ultraviolet 6.X-ray 7.Gamma

D. The elements in a source, the temperature of a source. The relative speed between us and a source none of these answers

2. Visible light takes up most of the electromagnetic spectrum. A. dispersion B.

false

C. weaker D. refracted

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Test: astronomy #3 | Quizlet

2020-09-24, 1 :21 PM

3. Opposite charges [x], while like charges [y]. A. spectrometer B. absorption spectrum C. emits radiation D.

attract, repel

4. White light undergoes _________ when passing through a prism. A. emits radiation B. excitation C.

dispersion

D. Temperature

5. The simplest atom is A. frequency B.

hydrogen

C. photon D. refracted

6. When there are missing colours seen as dark lines on a spectrum they are called A. excitation B. frequency C. emits radiation D.

absorption spectrum

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Test: astronomy #3 | Quizlet

2020-09-24, 1 :21 PM

7. The number of wavelengths that pass by each second is called the __________. A. excitation B. Temperature C.

frequency

D. refracted

8. If 14 waves take 10 seconds to hit the shore, what is the frequency of the waves? A. weaker B. excitation C. refracted D.

1.4 ± 0

9. Electromagnetic radiation gets _______ as it moves away from its source. A. refracted B. frequency C. false D.

weaker

10. All radiation is visible A. weaker B. hydrogen C. photon D.

false

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Test: astronomy #3 | Quizlet

2020-09-24, 1 :21 PM

11. An emission spectrum is a pattern of A. a spectrum of all the wavelengths in the rainbow B. gains enough energy to leave the orbits surrounding the nucleus C.

bright lines against a black background

D. need specific amounts of energy to move from one orbit to another

12. When an electron moves from an excited state back to a ground state it A. Temperature B. excitation C.

emits radiation

D. absorption spectrum

13. If a star gives off radiation at 720 nm, what is its temperature? A.

4166.7

B. 256 C. photon D. 1.4 ± 0

14. In astronomy, the Doppler effect is used to see if planetary bodies are moving towards or away from us. If they are approaching us we would obverse a A. dispersion B. refracted C. excitation D.

blueshift

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Test: astronomy #3 | Quizlet

2020-09-24, 1 :21 PM

15. Electrons orbiting a nucleus A. a spectrum of all the wavelengths in the rainbow B.

need specific amounts of energy to move from one orbit to another

C. gains enough energy to leave the orbits surrounding the nucleus D. negatively charged

16. When an atom gains the energy to move into a higher energy orbit it is called A. emits radiation B.

excitation

C. refracted D. dispersion

17. An object omits radiation at a wavelength of 623.6 nm, but we observe the wavelength of emission to be 624.3. How fast is the object moving toward or away from us? A. negatively charged B. absorption spectrum C. blueshift D.

336,754 m/s away from us

18. A _________ is a device used to disperse light and form a spectrum. A. refracted B. dispersion C. Temperature D.

spectrometer

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Test: astronomy #3 | Quizlet

2020-09-24, 1 :21 PM

19. When we say that light is being ________ it means that the light is bent while passing from one A.

refracted

B. excitation C. frequency D. emits radiation

20. We call a light particle a _________. A. excitation B. dispersion C. false D.

photon

21. Light can act as a particle or a wave. A.

true

B. false C. 1. Radio 2.Microwave 3.Infrared 4.Visible 5.Ultraviolet 6.X-ray 7.Gamma D. photon

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Test: astronomy #3 | Quizlet

2020-09-24, 1 :21 PM

22. The electron is A. absorption spectrum B. need specific amounts of energy to move from one orbit to another C.

negatively charged

D. emits radiation

23. The ____________ of a source determines the type of radiation emitted. A.

Temperature

B. excitation C. emits radiation D. spectrometer

24. When an electron is ionized it A. need specific amounts of energy to move from one orbit to another B. emits radiation C.

gains enough energy to leave the orbits surrounding the nucleus

D. a spectrum of all the wavelengths in the rainbow

25. If star A has 4 times the temperature of star B, how much more energy is star A outputting? A. 1.4 ± 0 B.

256

C. 4166.7 D. weaker

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Test: astronomy #3 | Quizlet

2020-09-24, 1 :21 PM

26. A continuous spectrum is A. need specific amounts of energy to move from one orbit to another B.

a spectrum of all the wavelengths in the rainbow

C. bright lines against a black background D. gains enough energy to leave the orbits surrounding the nucleus

27. By studying the light from distant objects, we can deduce information such as A. bright lines against a black background B.

The elements in a source, the temperature of a source. The relative speed between us and a source none of these answers

C. 1.4 ± 0 D. spectrometer

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