Volcanic and other such activity at the mid-atlantic ridge extrudes material to fill the gap between separating tectonic plates associated with continental drift. the magnetization of rocks is found to reverse in a coordinated manner with distance from the ridge. what does this imply about the earth’s magnetic field and how could the knowledge of the spreading rate be used to give its historical record?

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

Photons with the highest energy have the longest period

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.