ESC 1000 Earth Science
Name:__________________
Chapter 23 Part K: Key Terms
Fill in
the blanks with the word(s) that best fit the description:
1. ___________________ – A continuous spectrum with dark lines superimposed.
2. ___________________ – A bright display of ever-changing light caused by solar radiation interacting with the upper atmosphere in the region of the poles.
3. ___________________– The bright lines produced by an incandescent gas under pressure.
4. ___________________– The property of a lens whereby light of different colors is focused at different places.
5. ___________________ – The first layer of the solar atmosphere found directly above the photosphere.
6. ___________________– An uninterrupted band of light emitted by an incandescent solid, liquid, or gas under pressure.
7. ___________________ – The outer, tenuous layer of the solar atmosphere.
8. ___________________– The apparent change in wavelength of radiation caused by relative motions of the source and the observer.
9. ___________________– The transfer of energy (heat) through space by electromagnetic waves.
10. ___________________ – A short-focal-length lens used to enlarge the image in a telescope. The lens that is nearest the eye.
11. ___________________– The distance from the lens to the point where it focuses parallel rays of light.
12. ___________________– The point where a lens or mirror causes light rays to converge.
13. ___________________ – The fine structure visible on the solar surface caused by the convection cells below.
14. ___________________– A type of nuclear reaction which consists of several small nuclei reacting to form a larger nucleus. This is the source of the sun’s energy.
15. ___________________– The collecting lens of a refracting telescope.
16. ___________________ – A discrete amount (quantum) if electromagnetic energy
17. ___________________– The region of the Sun that radiates energy to space. The visible surface of the sun.
18. ___________________ – A concentration of material above the solar surface that appears as a bright archlike structure
19. ___________________– A chain of thermonuclear reactions by which nuclei of hydrogen are built up into nuclei of helium.
20. ___________________– The force exerted by electromagnetic radiation from an object such as the Sun.
21. ___________________– Two or more radio telescopes that combine their signals to achieve the resolving power of a larger telescope
22. ___________________– A telescope designed to make observations in radio wavelengths.
23. ___________________– A telescope that concentrates light from distant objects by using a concave mirror.
24. ___________________– A telescope that employs a lens to bend and concentrate the light from distant objects.
25. ___________________–
A sudden and tremendous eruption in the solar chromosphere.
26. ___________________– Subatomic particles ejected at high speed from the solar corona.
27. ___________________
– A instrument for directly viewing the spectrum of light source.
28. ___________________ – The study of spectra
29. ___________________ – A narrow jet of rising material in the solar chromosphere.
30. ___________________ – A dark spot on the Sun, which is cool by contrast to the surrounding photosphere.
Chapter 23 Light, Astronomical Observations,
and the Sun Word List:
|
Bright-line (emission) spectrum Chromatic Aberration Chromosphere Continuous spectrum Dark-line spectrum
(absorption) Doppler effect Electromagnetic radiation Eyepiece |
Focal length Focus Granules Nuclear fusion Objective lens Photon Photosphere Prominence Proton-proton chain Radiation pressure |
Radio interferometer Radio telescope Reflecting telescope Refracting telescope Solar flare Solar wind Spectroscope Spectroscopy Spicule Sunspot |