Which of the following statements describes the difference between red and blue light?
A. Red and blue light have different directions of polarization.
B. The wavelength of red light is longer.
C. Blue light has a higher speed of propagation.
D. Red light has a higher intensity.
Answer: B
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a. China b. Australia c. Brazil d. Canada e. Sweden
Stream gradient is constant along the course of a river
Indicate whether the statement is true or false
Volcanoes that present major hazards to people living on the continents are likely at location
A. 1. B. 2. C. 3. D. 5. E. 1, 2, and 5.
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a. hydrophobic b. giant c. salt crystal d. haze e. hygroscopic