Starting from the Big Bang, briefly explain how our solar system came to contain the chemical elements necessary to make Earth and living organisms
What will be an ideal response?
The Big Bang produced hydrogen and helium. Over time, stars have converted about 2 percent of this material into heavier elements, including all the elements of which we and Earth are made. Stars expel this material through winds and explosions, and the galaxy recycles it into new generations of stars. When a new star system forms, it therefore contains the ingredients needed to make planets and living organisms.
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Venus has many more _______________ than Earth, but not nearly as many as Earth's Moon
Fill in the blank(s) with correct word
Steep-sided stratovolcanoes are made from lava that
A) is as runny as liquid water. B) has a medium viscosity. C) has a high viscosity. D) can have any viscosity.
A high tide is occurring at Charleston, South Carolina (80°W, 33°N). At approximately what other longitude is a high tide occurring?
a. 100°E b. 80°E c. 60°E d. 40°E e. 20°E
The longest day (daylight) of the year for the Northern Hemisphere occurs at the time of the
a. autumnal equinox. b. vernal equinox. c. winter solstice. d. summer solstice.