Active solar heating requires a ___ between the black material and the glass to carry the heat away.
A) solid
B) liquid
C) gas
D) plastic
Correct Answer:
Verified
Q4: Select the correct statement.
A)In the Northern Hemisphere,
Q5: The major user of solar hot water
Q6: Conventional solar cells contain layers of
A)carbon
B)silicon
C)zinc
D)tin
Q7: Solar power requires backup systems for
A)windy days
B)cold
Q8: The first practical photocell was developed in
Q10: The Stirling engine, developed in 1816, converts
A)motion
Q11: The use of wind power was first
Q12: The leader using wind power in the
Q13: Worldwide, the leader using wind power is
A)China
B)Germany
C)Spain
D)US
Q14: Disadvantages of wind power include
A)disturbs wildlife
B)interferes with
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