The very first subatomic particle discovered was the
A. muon.
B. electron.
C. proton.
D. quark.
E. neutron.
Answer: B
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The property of cleavage reflects:
-the luster of the mineral. -the hardness of the mineral. -the streak of the mineral. -mechanical breakage along planes of weakness within the mineral. -the density of the mineral.
A pair of crossed Polaroids will transmit light
A) of sufficiently long wavelengths. B) that itself is polarized. C) if a third Polaroid at about 45 degrees is inserted between the two.
A narrow slit is illuminated with sodium yellow light of wavelength 589 nm. If the central maximum extends to ±30.0°, how wide is the slit?
a. 0.500 mm b. 2.20 × 10^?6 m c. 3.33 × 10^?5 m d. 1.18 ?m e. 5.89 ?m
Metamorphism occurs for which class of rocks?
a. Metamorphic only b. Sedimentary only c. Igneous only d. All of the above