Which of the following choices is not a way by which we can study the inside of the Sun?
A) We can send a space probe into the Sun's photosphere.
B) We can probe the interior of the Sun by studying the vibrations in its photosphere.
C) We can make a computer model of the Sun's interior that allow us to predict the observable properties of the Sun.
D) We can study solar neutrinos.
A) We can send a space probe into the Sun's photosphere.
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Compared to the other rings, those of ________ are the most irregular, with clumps of material and ring arcs
Fill in the blank(s) with correct word
A resonance with Mimas clears out the ring particles from Cassini's Division
Indicate whether the statement is true or false
If Venus and Earth outgassed a similar amount of CO2 early in their histories, why are their surface temperatures so different today?
a. Venus didn’t contain any water, so couldn’t be dissolved and converted into sediments. Therefore, the runaway greenhouse effect made its surface much hotter. b. Venus was closer to the Sun, water tended to be in the atmosphere rather than in oceans, and couldn’t be dissolved. Therefore, the runaway greenhouse effect made the surface of Venus much hotter c. Venus’s moon fell onto the planet with a catastrophic impact, producing massive ejecta and increasing the abundance of in the atmosphere. Therefore, the greenhouse effect made its surface much hotter. d. Venus didn’t have a detectable magnetic field, so the solar wind reached Venus’s surface and evaporated additional from the crust, increasing the greenhouse effect and making its surface much hotter.
Two children ride on a merry-go-round, George is at a greater distance from the axis of rotation than Jacques. It is a true statement that
A) Jacques has a greater angular velocity than George. B) Jacques and George have the same angular velocity. C) Jacques has a smaller angular velocity than George. D) both have zero angular velocities. E) Cannot tell which one has the greater angular velocity without knowing their masses.