Which of the following is not evidence for plate tectonics on Earth?
A) some continental boundaries fit together like pieces of a jigsaw puzzle
B) similar rocks and fossils are found in different continents
C) high ocean ridges between the continents
D) existence of volcanoes
E) earthquakes
D
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In the context of nuclear fusion in massive stars, which of the following statements is true of carbon fusion?
A) At lower temperatures than carbon fusion, nuclei of oxygen, neon, and magnesium fuse to make iron. B) At lower temperatures than carbon fusion, iron can fuse to make silicon. C) As carbon is exhausted, core ignition and shell ignition continue with a series of heavier nuclei as fusion fuel. D) As soon as the carbon is exhausted in the core of massive stars, the core expands, and carbon ignition pauses.
The assumption that from any place in the universe the observer would measure the same physical properties we observe is called
A) Olbers's paradox. B) general gelativity. C) special relativity. D) steady state physics. E) the cosmological principle.
Suppose you live on the near side of the Moon in the crater Copernicus. How often will the Sun set below your horizon?
a. Every 12 hours b. Every 24 hours c. Every 29.5 days d. Never
Explain how objects can get charged by FRICTION
What will be an ideal response?