What do we mean by a primitive meteorite?
A) a piece of rock that is essentially unchanged since it first condensed and accreted in the solar nebula some 4.6 billion years ago
B) a meteorite that was discovered by primitive people
C) a meteorite that fell to Earth at least 4 billion years ago
D) a type of meteorite that is usually made mostly of high-density metals
A
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Joe's toaster broke. He bought a toaster oven to replace it, telling his wife Annie that it is cheaper to make toast in the toaster oven than in the range's oven
Toast takes 5 minutes to cook in the toaster oven while it takes only 3 minutes in the range's oven. Is Joe right or is Annie, who says they've wasted their money? Explain.
Magnetic Field of a Long Wire: A long, straight, horizontal wire carries current toward the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the magnetic force on the proton?
A. toward the north B. toward the south C. upward D. downward E. toward the east.
Rocks solidified from molten material below ground are classified as ______________ igneous rocks
a. extrusive b. intrusive c. superior d. inferior
Convection is a mode of energy transport between materials that requires close contact between the atoms
Indicate whether the statement is true or false