In the H-R diagram, stars of luminosity class A1 are located near the center.
Answer the following statement true (T) or false (F)
False
You might also like to view...
Scientists refer to Earth as a differentiated planet because ________.
A. the temperature in the core is higher than the temperature on the surface B. iron is more dense than silicate material C. the material in the interior of Earth is arranged by density D. Earth's structure is different from the other planets
The difference between the pressures inside and outside a tire is called
a. absolute pressure b. gauge pressure c. atmospheric pressure d. psi e. none of the above
When we say that an electromagnetic field is "quantized," we mean that
A) whenever it interacts with atoms, it must deposit an entire "quantum" of energy at each interaction. B) its energy is "digitized" to have either 0, 1, 2, 3, etc. units of a basic energy increment. C) it impacts a viewing screen as tiny bundles of radiation. D) All of the above. E) None of the above.
During which event does the Sun reach its most southern point in the celestial sphere within the Northern hemisphere?
a. nadir b. summer solstice c. vernal equinox d. autumnal equinox e. winter solstice