Suppose you find a meteorite made almost entirely of metal. According to current science, which of the following statements must be true?
A) Your meteorite is a fragment from the core of a large asteroid that shattered in a collision.
B) Radiometric dating will show the age of your meteorite to date to the formation of our solar system.
C) Your meteorite was blasted off the surface of Mars by an impact.
D) Your meteorite is a fragment of an object from the Kuiper belt.
A) Your meteorite is a fragment from the core of a large asteroid that shattered in a collision.
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a. feedback inhibition b. an endergonic reaction c. an induced fit with an enzyme d. activation energy e. cofactor interaction
Which of the following statements about globular clusters is false?
A) Globular clusters contain many thousands of stars. B) Globular cluster stars are more than 12 billion years old. C) Globular cluster ages increase with distance from the Milky Way. D) Globular clusters are distributed spherically around the Milky Way. E) Globular cluster stars are very metal-poor relative to the Sun.
A decibel is a measure of a sound's
A) frequency. B) wavelength. C) speed. D) loudness. E) all of the above
Which is heaviest?
A) oxygen atom B) hydrogen atom C) electron D) proton E) water molecule