Search

...energies released by earthquakes...Earthquakes: 1.1 What happens during an earthquake? - The Earth is an active planet, with activity occurring in the oceans, in the atmosphere and in the solid Earth itself. This course looks at a dramatic example of solid Earth activity: earthquakes. You probably have some idea from newspapers, television or perhaps personal experience,...

...energy, which cannot be created or destroyed. It is Noether's theorem that relates this conservation law to the underlying symmetry of space itself – in fact, the conservation of energy is a result of the fact that empty space 'looks the same' from one moment to the next. Put another way, if empty space were rough or lumpy, then energy would be lost as things moved...