1. magma that cools and crystallizes on earth's surface forms
a. quartz b. extrusive rocks c. intrusive rocks d. magma

2.an atom that gains or loses an electron has a net electric charge and is called a/n
a. ion.
b. proton.
c. neutron.
d. electron

3. the two subspecialties of astronomy are
a. astrophysics and planetary science.
b. climatology and atmospheric chemistry.
c. environmental earth science and environmental chemistry.
d. paleontology and geochemistry.

4. a satellite records reflected wavelengths from earth's surface
a. gis
b. gps
c. landsat
d. seabeam

5. magma is classified as basaltic, andesitic, or rhyolitic based on what factor
a. temperature of the magma
b. region of the earth in which it formed
c. amount of silica it contains
d. amount of pressure placed on it during formation

6. all the water on earth, including the water in the atmosphere, makes up the
a. biosphere.
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b. hydrosphere.
c. geosphere.
d. atmosphere.