Describe what produces the retrograde motion of Mars. What geometric arrangements did Ptolemy use to explain this motion?
What will be an ideal response?
The retrograde motion of Mars is due to Earth having a faster orbital speed than Mars. From the point of view of a stationary Earth, Mars appears to move backward, or retrograde. Ptolemy described this motion geometrically by proposing that the planets orbited on small circles (epicycles) revolving on large circles (deferents).
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If the president vetoes a bill, what happens to the bill?
A. It is referred back to the House and Senate for a floor debate. B. It can still become law if two-thirds of the House and Senate vote to override the veto. C. It does not become law. D. It is referred back to the full committee for a markup. E. It goes back to field hearings for more discussion and markups.
Schemes that emphasize transparency and traceability, verified through third- party certification are termed:
a) green labeling. b) values chains. c) conscious consumption. d) plenitude.
The release of chemical energy from food is analogous to the burning of fossil fuel.
Answer the following statement true (T) or false (F)
The pattern of absorbance of solar energy by the atmosphere includes
A. absorbance of infrared radiation by carbon dioxide and water vapor. B. a remarkable uniformity in the proportion of different kinds of wavelengths absorbed by ozone. C. heavy absorbance of visible light by carbon dioxide.