If the pinhole experiment is conducted at the time of a partial solar eclipse when the Sun is crescent shaped, the image will be
A. a crescent.
B. an ellipse.
C. as round as with no eclipse.
D. impossible to say
Answer: A
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The ________ describes the movement of water through Earth's hydrosphere.
a.) aqualytic cycle b.) hydrologic cycle c.) precipitation cycle d.) aquatic cycle
Blight fungus kills U.S. chestnut trees because the trees ________
A) have not matured long enough to survive B) release the fungus in the leaves that fall to the ground and the fungus is absorbed in the soil C) are hosts to the vectors of the fungus D) have not coevolved with the fungus E) release the fungus into the soil and it is drawn up in the roots
The difference between the wilting point and field capacity is approximately equal to
A) wilting point water. B) gravitational water. C) available water. D) hygroscopic water.
Which of the following statements about the Amazon is TRUE?
A) The Amazon River is second only to the Nile River in amount of freshwater delivered to the ocean. B) The Amazon Basin is located in Mexico. C) The Amazon Basin is the largest river system in the world by volume. D) The Amazon Basin is located exclusively in Brazil. E) The Amazon Basin is composed primarily of steep-sided highlands.