Eons are divided first into
a. eras.
b. periods.
c. millennia.
d. epochs.
a
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The eerie and pretty northern and southern lights that are produced when gases in Earth's upper atmosphere glow from energy delivered by the solar wind are referred to as _____
A) aurorae B) coronal holes C) solar flares D) spicules
A spherical inflated balloon is submerged in a pool of water. If it is further inflated so that its radius doubles, how is the buoyant force affected?
A) not at all B) 4 times larger C) 2 times larger D) 6 times larger E) 8 times larger
Which sugar is the sweetest of all sugars?
a. Sucrose b. Lactose c. Glucose d. Fructose
When a 24.0-W resistor is connected across a 12.0-V battery, a current of 410 mA flows. What is the resulting terminal voltage of the battery?
a. 11.6 V c. 0.4 V b. 9.8 V d. 12.0 V