Once the helium flash occurs at stage 10, the star stabilizes again on the horizontal branch of the H-R diagram, but now hundreds of times as bright as on the main sequence
Indicate whether the statement is true or false
TRUE
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The type of reproduction that occurs between human beings is referred to as
A) unsexual B) carnal C) asexual D) sexual
How does the largest asteroid, Ceres, compare in size to other solar system worlds?
A) It is larger than the planet Mars. B) It is larger than our Moon but smaller than Mercury. C) It is larger than Mercury but smaller than Mars. D) It is about a quarter the diameter of our Moon. E) It is about the size of the two moons of Mars.
The relationship between mass and weight is given by the equation
a. m = wg. b. w = m/g. c. g = mw. d. w = mg.
Which of the following describes a major similarity between Titan and Earth?
A) Both have nearly identical atmospheric compositions of nitrogen and oxygen. B) Both have features of erosion due to a liquid, except on Titan it is liquid methane and ethane rather than liquid water. C) Both have many active volcanoes erupting with molten rock, except the rock is higher density on Titan. D) The two worlds have very similar surface temperatures and surface compositions.