When lava reaches the surface of the Earth through volcanoes or through great fissures the rocks that are formed from the lava cooling and hardening are called extrusive igneous rocks. Some of the more common types of extrusive igneous rocks are lava rocks, cinders, pumice, obsidian , and volcanic ash and dust.
<span>C. the slope of that objects velocity-time graph
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Answer:
B because 17100 is the half of the carbon
formula for wavelength = speed/frequency
So 1500/200 = 7.5 meters
Your answer is. D. 10÷60 = 1.66km/hr
