Question

What are the large segments of the earth’s crust that ordinarily move very slowly?

Answer 1

tectonic plates

Tectonic plates are large segments of the Earths crust that move slowly. Suppose that one such plate has an average speed of 4.0 cm/year.  a  What distance does it move in 1 s at this speed?  b  What is its speed in kilometers per million years? 10.  a  Refer to Table 1.3 to determine the average distance between the Earth and the Sun. Then calculate the average speed of the Earth in its orbit in kilometers per second.  b  What is this in meters per second?.