What do we mean by the "geological record"?
A) rocks from earlier periods of the Earth's history
B) samples of meteorites that fell to Earth early in its history
C) remains of ancient organisms preserved in rocks
D) an album by the Rolling Stones
A
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The product of the frequency of a periodic wave times its wavelength gives the ________ of the wave.
Fill in the blank(s) with the appropriate word(s).
What are the primary reasons for making telescopes larger?
a. to make things look bigger b. to decrease image resolution c. to collect more light to so faint objects can be seen d. to see a larger part of the sky
You are designing eyeglasses for someone whose near point is 60 cm. What focal length lens should you prescribe so that an object can be clearly seen when placed at 25 cm in front of the eye?
a. ?18 cm b. 18 cm c. 43 cm d. 60 cm e. –43 cm
What is thermal conductivity?
What will be an ideal response?