The phrase “epoch” is pronounced with a tough “c” sound, as within the phrase “cat.” The “e” within the first syllable is pronounced just like the “a” in “apple,” and the “o” within the second syllable is pronounced just like the “o” in “go.” Due to this fact, the phrase “epoch” is pronounced as “EP-uh-k.”
Epochs are vital models of geologic time. They’re used to divide the Earth’s historical past into distinct intervals, every of which is characterised by a novel set of geologic occasions. Epochs are sometimes tens of millions of years lengthy, and they’re usually used to trace the evolution of life on Earth.