Describe several features on the Earth's crust explained by plate tectonics
What will be an ideal response?
Mountain ranges, volcanic mountain chains, mid-ocean rifts, oceanic trenches, faults, earthquakes, and plate motion.
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Mercury and the Earth have about the same average density, but Mercury's core is much larger, compared to the size of the body
Indicate whether the statement is true or false
How many quarks are in a deuteron, 2H?
A) 3 B) 2 C) 4 D) 1 E) 6
In the context of the mass-luminosity relation, a star with a mass of 2 solar masses on the main sequence would have a luminosity of approximately _____ solar luminosities
A) 2.5 B) 4 C) 11 D) 0.5
Starting with a sample of pure parent radionuclide, what would be the ratio of the parent radionuclide to its daughter after two half-lives have elapsed?
a. 1 to 1 b. 1 to 2 c. 1 to 3 d. 1 to 4