Infrared waves are often called heat waves because they Question 4 options: are the predominant waves emitted by the sun. emanate from relatively hot sources. induce resonance in molecules and increase internal energy in a substance. consist of frequencies lower than those of visible light. are absorbed rather than reflected by the skin. Question 5 (1 point) Listen Red-hot and blue-hot stars appear white to the eye because Question 5 options: eye receptivity peaks in the yellow-green part of the spectrum. they are overwhelmed by the blackness of the nighttime sky. the eye has difficulty seeing color at night. they are too dim to fire the cones. they are too dim to fire the rods. Question 6 (1 point) Listen Glass is transparent to wave frequencies that Question 6 options: are below its natural frequencies. match its natural frequencies. both of these none of these Question 7 (1 point) Listen The main difference between the retina of a human eye and that of a dog's eye is the Question 7 options: absence of cones in a human's eye. predominance of cones in a dog's retina. more intricate optic nerve in a human's eye. absence of cones in a dog's retina. none of these Question 8 (1 point) Listen When the frequency of light matches the natural frequency of molecules in a material, light is Question 8 options: reflected. transmitted. absorbed. none of these Question 9 (1 point) Listen Light shines on a pane of green glass and a pane of clear glass