Silicates are minerals that have the oxygen and silicon ______________ as their basic structure
Fill in the blank(s) with correct word
tetrahedron
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The Babcock model employs differential rotation of the solar surface and a magnetic dynamo to describe the formation of sunspots
Indicate whether the statement is true or false
The bulk modulus of a material, as a meaningful physical property, is applicable to which of the following?
a. only solids b. only liquids c. only gases d. solids, liquids and gases
Which of the following best describes how the greenhouse effect works?
A) A planet's surface absorbs visible sunlight and returns this absorbed energy to space as infrared light. Greenhouse gases slow the escape of this infrared radiation, which thereby heats the lower atmosphere. B) Greenhouse gases absorb X rays and ultraviolet light from the Sun, and this absorbed radiation then heats the atmosphere and the surface. C) Greenhouse gases absorb infrared light coming from the Sun, and this absorbed sunlight heats the lower atmosphere and the surface. D) The greenhouse effect is caused primarily by ozone, which absorbs ultraviolet light and thereby makes the atmosphere much hotter than it would be otherwise.
What is the quark composition of the ?++? It has no strangeness, no charm, and no top-ness or bottom-ness. Its spin is 3/2