Describe the surface features of Venus. If the atmosphere is so thick and the planet is so hot, how do we know about these surface features on Venus?
What will be an ideal response?
Most of the surface of Venus consists of low, rolling plains and highland regions. Those rolling plains appear to be large-scale smooth lava flows; whereas the highlands are regions of deformed crust. Lava flows seem to have completely resurfaced Venus within approximately the past half-billion years. Signs of volcanism dominate the surface of Venus. Lava channels are common, and they appear similar to the sinuous rilles visible on Earth's Moon. Scientists have identified these features from radar imaging of the surface using instruments on satellites orbiting the planet.
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The freezing point of pure water is 0°C. Which of the following temperatures represents one that is double this based on an absolute temperature scale?
1.0°C 2.100°C 3.200°C 4.273.15°C
The moons of Jupiter supported the__________of the Universe over the Ptolemaic model
A) Newtonian model B) Galilean model C) Copernican model D) Kepler model
Two lenses, the first with focal length -12.5 cm and the second with focal length 20.0 cm, are separated by 15.0 cm. If an object is place 50.0 cm in front of the first lens, what is the total magnification?
A. 20.0 B. -20.0 C. 1.25 D. -1.25 E. -0.800
What is the ecliptic?
A) the path the Sun appears to trace around the celestial sphere each year B) the Sun's daily path from east to west in our sky C) the path traced by the Moon's shadow on Earth during a solar eclipse D) a half-circle extending from your horizon due north, through your zenith, to your horizon due south