What is shown by the small-scale changes in the shading in the figure above?
A) variations in the temperature of the photosphere
B) variations in the height of the solar surface
C) vibrations seen at the solar surface
D) Nothing; this is an artist's rendering of the sun.
C
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Which of the following is NOT a pattern of motion in our Solar System?
A) Most planets rotate in the same direction they orbit. B) Most planetary orbits lie in the same plane. C) Most planets orbit in the same direction. D) Almost all large moons orbit their planet in the same direction as the planet's rotation. E) The planets orbit the Sun in a direction opposite that of the Sun's rotation.
Explain what causes high tides on Earth
What will be an ideal response?
The force that acts between a pair of magnetic poles depends on
A) magnetic pole strength. B) separation distance. C) both of these D) neither of these
For this situation, I push on a heavy chair.Suppose I push moderately on the chair, and this time the chair does move. Then the strength of the force the chair exerts on me is
a. less than the force I exert on the chair. b. equal to the force I exert on the chair. c. greater than the force I exert on the chair. d. zero.