Which statement is a common misconception with regard to Earth's atmosphere?
a. The carbon dioxide added to the atmosphere since the year 1800 is mostly or entirely due to human burning of fossil fuels.
b. All of Earth will warm at the same rate if there is global warming
c. The ozone layer in the upper atmosphere protects the lower atmosphere and Earth's surface from harmful solar UV radiation.
d. Global warming and ozone depletion are two very different activities in Earth's atmosphere.
e. Earth has experienced a greenhouse effect its entire planetary history.
b
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The angle of reflection is the angle between
A) the reflected ray and the incident ray. B) the reflected ray and the surface of the mirror. C) the incidence ray and the surface of the mirror. D) the reflected ray and the normal drawn at the point where this ray meets the mirror. E) the incident ray and the normal drawn at the point where this ray meets the mirror.
A lens of focal length 40 mm is used as a magnifier. The object being viewed is 5.3 mm long, and is positioned at the focal point of the lens. The user of the magnifier has a near point at 25 cm
The angular magnification of the magnifier is closest to: A) 6.3 B) 5.6 C) 6.9 D) 7.5 E) 8.1
What process limits a telescope's resolving power?
A. distraction B. reflection C. diffraction D. refraction
When the Sun rises, it is located in the constellation Gemini. When the Sun sets later that same day, it will be:
A) in the constellation Aries. B) in the constellation Taurus. C) in the constellation Gemini. D) in the constellation Cancer. E) in the constellation Leo.