Matching. Write the letter on the line next to the correct definition 1. The process responsible for movement of material in the mantle
2. Melted material created by subduction rises to form volcanoes
3. Crust is pulled apart to form mid-ocean ridges and rift valleys
4. Layer of partially melted material that is responsible for the movement of the tectonic plates and land
formations
A Mantle
B. Divergent Plate Boundary
C. Convergent Plate Boundary
D. Convection

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2

What ia the energy of an object because of its potential and kinetic energies

"if the pressure acting on an ideal gas at constant temperature is tripled, its volume isa) reduced to one-third.b) increased by a factor of three.c) increased by a factor of two.d) reduced to one-half"