What was the Maunder Minimum?
What will be an ideal response?
A period of unusually low solar activity identified by the British astronomer of the same name that occurred between 1645 and 1715. This is also when there was a "little ice age" and less auroral activity.
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What is the safest way or method to observe a solar eclipse?
a. using a telescope b. wearing sunglasses c. by observing with your naked eyes d. through a pinhole projection e. through a UV filter held up to the sky
Although it hasn't been observed (yet), why do astronomers think that the Milky Way may contain "dark" material?
A. Due to its large size, the light from stars on the other side of the Milky Way has not reached us yet. B. Astronomers have detected neutrinos from unseen sources. C. Theory predicts that there should be more black holes than we've so far detected. D. The Galaxy's gravity seems too big for the mass astronomers can see.
A simple pendulum, 2.0 m in length, is released from rest when the support string is at an angle of 25° from the vertical. What is the speed of the suspended mass at the bottom of the swing?
A ceramic mixture
