If water caused the huge outflow channels on Mars, what was the most likely process that formed them?
A) rainfall from the hydrosphere
B) catastrophic but rare flooding
C) annual melting of the seasonal ice caps
D) large comets that struck Mars
E) heat from the impact of the large asteroid that made Hellas
B
You might also like to view...
The brightest main-sequence star in a cluster has a temperature of 10,000 K and a luminosity about 100 times greater than the sun. What is the approximate age of the cluster?
A) About 1011 years B) About 107 years C) About 109 years D) This cannot be answered using the HR diagram.
If you lift a 15-N weight vertically 30 m above the ground, you are
a. doing work against gravity. b. doing work against friction. c. doing work against inertia. d. doing none of these.
An ambulance is generating a siren sound at a frequency of 2,400 Hz. The velocity of sound is 345.0 m/s. If the ambulance is traveling at a velocity of 24.00 m/s away from the stationary observer, then what is the frequency of the siren perceived by the observer?
A. 2,375 Hz B. 2,306 Hz C. 2,266 Hz D. 2,244 Hz E. 2,210 Hz
If the momentum of an electron is 1.95 × 10-27 kg ? m/s, what is its de Broglie wavelength? (h = 6.626 × 10-34 J ? s)
A) 340 nm B) 210 nm C) 170 nm D) 420 nm E) 520 nm