Plates move away from each other by 3.5 cm per year at the mid-Atlantic ridge, for a net growth of 7 cm per year for the width of the Atlantic Ocean. How much wider is the Atlantic Ocean today compared to when Columbus discovered the Americas in 1492?
A. about 40 meters
B. about 4 meters
C. about 400 meters
D. about 4 kilometers (4000 meters)
Answer: A
You might also like to view...
The coyotes typically forage on mice and squirrels. However, as members of the canine family, Canidae, they are known to be able to eat berries and parts of plants as well as small animals. Thus, they would be classified as
a. Herbivores b. Carnivores c. Omnivores d. Detritivores e. Producers
What term describes how fast a radioactive element decays?
A. Radiation B. Atomic Number C. Half-life D. Biogeography
Erosion of the Precambrian igneous and metamorphic core of the uplifted Ancestral Rockies produced thick fans of
arkose and conglomerate. a. True b. False
What causes warm springs?
A) extreme kinetic energy and pressure from emerging water B) deep circulation of water C) proximity to tectonic action D) proximity to magma