The complete cycle of lunar phases takes 29.53 days, also known as the Moon's ____________________ period

Fill in the blank(s) with correct word


synodic

Physics & Space Science

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One limit on the age of the Universe is that it must be older than the oldest stars.

Answer the following statement true (T) or false (F)

Physics & Space Science

Why is it better to search for extrasolar planets directly using infrared (IR) rather than visible radiation?

A) the planet doesn't reflect any visible radiation, only IR radiation B) the star doesn't emit any IR radiation because it is too hot C) the visible light from planets will be blocked by interstellar dust along our line of sight while the IR radiation will not D) the planet emits more IR radiation than it reflects in the visible

Physics & Space Science

When cottonseed oil (a liquid) is hydrogenated, the solid fat called ______________ is obtained

Fill in the blank(s) with correct word

Physics & Space Science

A magnetic compass points towards the north geographic pole of the Earth because

A. there is a south magnetic pole near the north geographic pole. B. there is a north magnetic pole near the north geographic pole. C. all magnetic poles, north or south, point that way due to the spin of the Earth. D. the static electricity in the atmosphere causes the alignment of the compass.

Physics & Space Science