Most extrasolar Neptunes and Jupiters found to date have
A) orbits very close to their parent stars, making them hot Neptunes and hot Jupiters.
B) orbits that are more eccentric than those of planets in our solar system, with eccentricities greater than 0.1
C) orbits that are less eccentric than those of planets in our solar system, with eccentricities less than 0.01.
D) much larger orbits than the jovian planets in our solar system.
B
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Answer the following statement(s) true (T) or false (F)
1. A divergent boundary forms between two oceanic plates and the resulting oceanic ridge. 2. The Himalayas formed due to a continent-continent collision. 3. Plate tectonics theory states that the outer layer of the Earth, the lithosphere, is broken up into several plates that move atop of a more ductile like asthenosphere. 4. Convection currents in the mantle cause the tectonic plates of the lithosphere to move. 5. Convergent boundaries move toward each other.
Why is spectroscopy important to astronomers?
What will be an ideal response?
Suppose that two stars are identical in every way—for example, same distance, same mass, same temperature, same chemical composition, and same speed relative to Earth—except that one star rotates faster than the other
Spectroscopically, how could you tell the stars apart? A) The faster rotating star has wider spectral lines than the slower rotating star. B) The faster rotating star will have an emission line spectrum while the slower rotating star will have an absorption line spectrum. C) The peak of thermal emission will be at a shorter wavelength for the faster rotating star than for the slower rotating star. D) There is no way to tell the stars apart spectroscopically, because their spectra will be identical.
When heat is added to a solid object, the ________ of the object must increase.
What will be an ideal response?