Investigating Astronomy: A Conceptual View of the Universe 1st Edition solutions

Investigating Astronomy: A Conceptual View of the Universe 1
On a graph like this, the specific wavelength being emitted with the most intensity is a. the highest point on the curve. b. where the line crosses the vertical axis. c. measured by the area under the curve. d. in the red region of the wavelength axis.

Investigating Astronomy: A Conceptual View of the Universe 1
The stars with the greatest energy output a. have more intense visible colors. b. have the highest intensity. c. are closest to Earth. d. have the greatest densities.

Investigating Astronomy: A Conceptual View of the Universe 1
The hottest stars have a blackbody curve with an intensity that a. peaks at longest wavelengths. b. peaks at shortest wavelengths. c. is nearly identical to cooler stars. d. peaks in the blue-green region.

Investigating Astronomy: A Conceptual View of the Universe 1
Compared to much cooler stars, the shape of the curve for the hottest stars would be a. similar, but much taller. b. similar, but much shorter. c. more evenly distributed around the visible region. d. about the same shape and size for all stars.

Investigating Astronomy: A Conceptual View of the Universe 1
The bright star Bellatrix in the constellation Orion has a surface temperature of 21,500 K. What is its wavelength of maximum emission in nanometers? What color is this star?

Investigating Astronomy: A Conceptual View of the Universe 1
The bright star Antares in the constellation Scorpius (the Scorpion) emits the greatest intensity of radiation at a wavelength of 853 nm. What is the surface temperature of Antares? What color is this star?

Investigating Astronomy: A Conceptual View of the Universe 1
Explain how Bohrs model of the atom accounts for spectra.

Investigating Astronomy: A Conceptual View of the Universe 1
Why do different elements display different patterns of lines in their spectra?

Investigating Astronomy: A Conceptual View of the Universe 1
What is the Doppler effect? Why is it important to astronomers? 1

Investigating Astronomy: A Conceptual View of the Universe 1
If you see a blue star, what does its color tell you about how the star is moving through space? Explain your answer. 1

Investigating Astronomy: A Conceptual View of the Universe 1
With the aid of a diagram, describe a refracting telescope. 1

Investigating Astronomy: A Conceptual View of the Universe 1
With the aid of a diagram, describe a reflecting telescope. 1

Investigating Astronomy: A Conceptual View of the Universe 1
Which dimensions of the telescope determine its light-gathering power? 1

Investigating Astronomy: A Conceptual View of the Universe 1
What is the purpose of a telescope eyepiece? 1

Investigating Astronomy: A Conceptual View of the Universe 1
Quite often advertisements appear for telescopes that extol their magnifying power. Is this a good criterion for evaluating telescopes? Explain your answer. 1

Investigating Astronomy: A Conceptual View of the Universe 1
Explain some of the disadvantages of refracting telescopes compared to reflecting telescopes. 1

Investigating Astronomy: A Conceptual View of the Universe 1
What is the angular resolution of a telescope? 1

Investigating Astronomy: A Conceptual View of the Universe 1
What is adaptive optics? 1

Investigating Astronomy: A Conceptual View of the Universe 1
What is a charge-coupled device (CCD)? Why have CCDs replaced photographic film for recording astronomical images? 2

Investigating Astronomy: A Conceptual View of the Universe 1
Why can radio astronomers make observations at any time during the day, whereas optical astronomers are mostly limited to observing at night? (Hint: Does your radio work any better or worse in the daytime than at night?) 2

Investigating Astronomy: A Conceptual View of the Universe 1
Why must astronomers use satellites and Earth-orbiting observatories to study the heavens at X-ray and gammaray wavelengths?