In science, "positive feedback" is a term that applies to
A) a process undergoing a self-reinforcing cycle that amplifies some initial effect.
B) commentary that reflects a high opinion of a scientist's work.
C) feedback that has a positive electrical charge.
D) a process that can only continue as long as most scientists continue to support it.
A) a process undergoing a self-reinforcing cycle that amplifies some initial effect.
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William Herschel thought he had found a comet when he spotted the green disk of:
A) Triton. B) Uranus. C) Neptune. D) Titania. E) Oberon.
What evidence suggests that we live inside a hot local bubble?
What will be an ideal response?
What do we mean by the event horizon of a black hole?
A) It is the very center of the black hole. B) It is the place where X-rays are emitted from black holes. C) It is the point beyond which neither light nor anything else can escape. D) It is the distance from the black hole at which stable orbits are possible.
Henrietta Leavitt discovered the period-luminosity relationship for ____________________
Fill in the blank(s) with correct word