The lightning stroke can heat the air through which it travels to an incredible 30,000 degrees Celsius (54,000 degrees Fahrenheit), which is ____ times hotter than the surface of the Sun.?
a. ?2
b. ?3
c. ?4
d. ?5
e. ?6
ANSWER: d
Environmental & Atmospheric Sciences
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Despite China's severe restrictions on religious customs and practice, acts of hostility by private individuals, organizations and groups in society are relatively low
Indicate whether this statement is true or false.
Environmental & Atmospheric Sciences
Nanotechnology looks at working with particles the size of
A) 100 microns or larger. B) 1 to 100 nanometers, the realm of individual atoms and molecules. C) 50 grams and smaller. D) infinitesimally small, the size of electrons.
Environmental & Atmospheric Sciences
Heat, pressure, and deformation are processes that can create
A. sedimentary rocks. B. igneous rocks. C. metamorphic rocks.
Environmental & Atmospheric Sciences
The red color in red rocks usually indicates the presence of ____
a. magnesium
b. carbon
c. silica
d. fossilized blood
e. iron
Environmental & Atmospheric Sciences