The fact that desert sand becomes very hot in the day and very cold at night is evidence that sand has a
A) low specific heat capacity.
B) high specific heat capacity.
C) none of the above
Answer: A
You might also like to view...
In an electrically neutral atom the number of protons in the nucleus is equal to the number of
A) electrons that surround the nucleus. B) neutrons in the nucleus. C) both of these D) none of the above
Which of the following statements is an overall summary of the findings from the Viking biology experiments?
A) the martial soil showed no signs of chemical or biological activity B) the Martian soil showed clear signs of biological activity C) the Martian soil is chemically reactive but shows no signs of biological activity D) the Martian soil contained organic molecules but showed no signs of biological activity
A radar signal bounces off your car and back to the antenna of a policeman's radar gun, checking for speeders. The radar gun can tell your speed of approach by "listening" for and measuring
A. a reflected signal at a higher frequency. B. a reflected signal at a lower frequency. C. a reflected signal with zero frequency. D. a reflected signal at the same frequency but polarized.
How can Betelgeuse be only half the Sun's surface temperature, yet about 10,000 times more luminous than the hotter Sun?
What will be an ideal response?