How do the locations of frequent earthquakes support the theory of plate tectonics?
a. they shake the top layer of the earth.
b. they create large rifts in the earth.
c. they occur along the edges of the tectonic plates.
d. they alter the topography of the surface of the earth.

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.