If a fish looks upward at 45° to a pond's water's surface, it will see
A) the pond's bottom.
B) the sky and possibly some tall surroundings.
C) only the water's surface.
D) none of the above
Answer: B
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Indicate whether the statement is true or false
Give evidence that magnetism plays a role in planetary nebula formation
What will be an ideal response?
Photon A has a higher energy than photon B. Given this information, which of the following statements is true?
A) Photon A has a longer wavelength than photon B B) Photon A travels faster in a vacuum than photon B C) Photon A has a higher frequency than photon B D) Photon A has a lower frequency than photon B
Massive stars form cores of ________ before exploding as Type II supernovae
Fill in the blank(s) with correct word