What are the different colored horizontal layers that we see in this photo of a wall in the Grand Canyon?
A) They are sediments deposited at different times in the past, so that layers near the bottom are the oldest and layers near the top are the youngest.
B) They are different types of volcanic rock that cooled at different rates after a single, large volcanic eruption.
C) They formed as the Colorado River carved out the canyon, so that the layers near the top are the oldest and the layers at the bottom are the youngest.
D) They got their coloration from ancient civilizations that painted the rock.
A) They are sediments deposited at different times in the past, so that layers near the bottom are the oldest and layers near the top are the youngest.
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Observing at a wide range of wavelengths, astronomers have detected more than ______ different molecules in the ISM
a. 10 b. 20 c. 50 d. 100 e. 150
Buoyancy: A cylinder, semicircular in cross-section, is 10 m long and 5.0 m in radius. It is completely submerged, with its flat bottom side horizontal and 8.0 m below the water surface, as shown in the figure. What is the magnitude of the net force on the curved upper surface of the half-cylinder? Neglect atmospheric pressure.
A. 2.0 × 106 N B. 2.5 × 106 N C. 3.0 × 106 N D. 3.5 × 106 N E. 4.0 × 106 N
The lakes of Titan consist of liquid ________
Fill in the blank(s) with correct word
Bosons are force-carrying particles
a. True b. False Indicate whether the statement is true or false