Our seasons are a consequence of the Earth's 23.5 degree ________
Fill in the blank(s) with correct word
axial tilt
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Refer to the graph. For the entire motion, the average velocity is
A. positive. B. negative. C. zero (it is not moving). D. It is not possible to tell from the graph
The first Apollo missions to the Moon found the maria to be plains of solid lava
a. True b. False Indicate whether the statement is true or false
A narrow copper wire of length L and radius b is attached to a wide copper wire of length L and radius 2b, forming one long wire of length 2L. This long wire is attached to a battery, and a current is flowing through it
If the electric field in the narrow wire is E, the electric field in the wide wire is A) E. B) 2E. C) 4E. D) E/2. E) E/4.
Why does the observation that all distant galaxies are moving away from Earth not violate the Cosmological Principle?
A. Any other galaxy in the Universe will also see the Universe expanding in the same way. B. The motion of galaxies relative to Earth has nothing to do with the Cosmological Principle. C. The night sky is still dark. D. It does violate the Cosmological Principle but for only the location of Earth.