In places where convection currents rise up towards the crust's surface, tectonic plates move away from each other in a process known as seafloor spreading (Fig. 7.21). Hot magma rises to the crust's surface, cracks develop in the ocean floor, and the magma pushes up and out to form mid-ocean ridges.
Cox and Dalrymple studied geomagnetic reversals in Owens Valley, California. This was within the subject of plate tectonics. They won many prizes for this. They were both geophysicists and Allan Cox himself wrote two books and hundreds of scientific essays regarding plate tectonics and won many awards for his work.
Answer:
The investment is risky because it has only a
2% chance of making a significant
The expected value of the investment is $ 49,050
return
Explanation:
Investment = $50,000
Expected worth = ( Chance in % x Expected Worth )
30% x $40,000 = $12,000
50% x $50,100 = $25,050
20% x $60,000 = $12,000
Total Expected Worth = $49,050
Expected value is $49,050
Chance to make the same worth is 2% ( (50000-49050 ) / 50,000 )