Sedimentary rocks subjected to melting become

A) lithified.
B) metamorphic rocks.
C) igneous rocks.
D) limestone.


Answer: C

Physics & Space Science

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If the electromagnetic force is stronger than gravity, then why is it overpowered by gravity on large scales?

A) The electromagnetic force only works on scales of about the size of an atomic nucleus. B) The electromagnetic force follows an inverse cube law with distance, rather than an inverse square law. C) Electrical charge is canceled out by mass. D) Most objects are electrically neutral.

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State the Third Law of Thermodynamics

What will be an ideal response?

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Most astronomical objects emit light over a broad range of wavelengths

Indicate whether the statement is true or false

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What is true of the Local Group?

A) It contains about 2500 galaxies. B) The Andromeda galaxy is a satellite of the Milky Way. C) The Andromeda galaxy (M31), and the Milky Way are the two largest galaxies. D) The giant ellipticals are the largest members. E) It consists of mostly spirals.

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