You measure the magnetization in a 100 million-year-old rock from North America. The magnetic minerals you measure have an inclination that is much shallower (lower inclination) than North America has today. From this measurement you conclude:
a. that North America has moved closer to the equator in the last 100 million years.
b. that North America has moved farther from the equator in the last 100 million years.
c. that North America was uplifted 100 million years ago.
d. that North America has moved both west and south in the last 100 million years.
e. that plate tectonics is wrong and that continents don't move.
b. that North America has moved farther from the equator in the last 100 million years.
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Cape Town, South Africa at about 34° south latitude, has what type of climate?
A) Cs ? Mediterranean B) Aw ? Tropical savanna C) Af ? Tropical rainy D) BW ? Desert E) ET ? Tundra
A woman lifts a box from the floor. She then moves with constant speed to the other side of the room, where she puts the box down. How much work does she do on the box while walking across the floor at constant speed?
A) 0 J B) more than 0 J C) not enough information given
What work are Sikh men noted for?
A) farmers and horticulturalists B) foresters C) merchants D) artists E) soldiers and bodyguards
The bulk of ice on Earth is in
A) floating ice shelves and packs. B) European and Asian mountain ranges. C) North America, specifically Alaska. D) Greenland and Antarctica.