Lahar definition
What will be an ideal response?
Landslide of wet volcanic debris on the side of a volcano
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By locating the north celestial pole (NCP) in the sky, how can you determine your latitude?
A) The altitude of the NCP is your angular distance from the North Pole. B) The direction of the NCP is the angular distance from the North Pole. C) The direction of the NCP is the same as your latitude. D) The altitude of the NCP is the same as your distance from the North Pole. E) The altitude of the NCP is the same as your latitude.
Slow surface evolution on the Moon is limited to
a. low-density masses of rock rising from the interior. b. low level meteorite impacts. c. moonquakes disturbing the surface features. d. motion along a network of small faults. e. All of the other choices are correct.
Which of the following provides evidence for active volcanism on Venus today and in the past?
A) the direct observation of erupting volcanoes from orbit B) the presence of sulfuric acid clouds in the atmosphere C) the detection from orbit of elevated levels of infrared radiation from volcanic features on the surface D) Both B and C
A ray of light travels from a glass-to-liquid interface at an angle of 23°. Indices of refraction for the glass and liquid are, respectively, 1.58 and 1.80 . What is the angle of refraction for the ray moving through the liquid?
a. 26.4° b. 20.1° c. 17.5° d. 20.2° e. 26.2°