The flow patterns found on the surface of Mars and the number of craters on top of them suggest that
A) Mars is today a liquid, water-rich world.
B) the climate on Mars was different billions of years ago.
C) volcanism is occurring on Mars.
D) the polar caps are made of liquid water.
E) all of the above.
If you project a red, a green and a blue light into space, the point at which the three lights cross will lead to the perception of
A) black light.
B) ultraviolet light.
C) white light.
D) infrared light.
Which of the following supports the idea that the Martian crust is not divided into moving plates like those on Earth?
A) I & II
B) II & III
C) II, III & IV
D) I, II, & III
E) I, II, III, & IV
At the musical he attended over the weekend, Andile noticed that whenever the red and green spotlights overlapped, they seemed to change to a yellow spotlight. This can be explained using the principles of
A) additive colour mixing.
B) subtractive colour mixing.
C) hypercomplex feature detection.
D) opponent-processing of colours.
Television sets are able to recreate the entire visible spectrum by additively mixing three primary colours. This process is similar to the view of human colour vision called
A) opponent-process theory.
B) saturation theory.
C) complementary color theory.
D) trichromatic theory.
One of the best-known and widely duplicated law-enforcement programs is ________.
A tactic used by the Los Angeles Police Department was Operation______________, in which traffic barriers were placed in neighborhoods where gangs and gang violence had become a dominant force.