When constructing a geologic time scale, how should you divide chunks of time? A) so that all 12 eras have an equal number of ye
ars within them B) so that each of the four eons has 1 billion years of time within them C) so that each chunk of time represents a time of similar fossils and geologic events D)so that each chunk of time corresponds to one layer of rock strata
C) so that each chunk of time represents a time of similar fossils and geologic events
Explanation:
It is important to distinguish between the geological timescale and the historical timescale. Geologic time refers to the process of the emergence, formation and transformation of planet Earth. Historical time, in turn, makes reference to the emergence of human civilizations and their capacity for written communication.
To get a rough idea of how human being is a recent episode in Earth's geological time, we use some analogies. For example, if the entire history of the planet were summarized within twenty-four hours of a day, the existence of humanity would have occurred within the last three seconds of that day. So when we talk about a geologically ancient relief formation, we are saying that it formed a few thousand years ago, probably in one of the last geological ages.
Frida Kahlo caught polio in 1913, aged six, and had to spend several months in bed. The paralytic form of the disease was not badly disabling, however, it did have some unavoidable consequences – her right leg remained slightly deformed and shorter than her left leg so she had to wear built-up shoes
The Id makes up the unconscious part of our brain. The Id is responsible for our need to satisfy basic needs, urges, and desires. The Id wants immediate gratification for these needs and operates on the Pleasure Principle (if it feels good, then do it).
First described in 1880 by Pierre and Jacques Curie, piezoelectricity results from pressing or squeezing certain crystals, such as quartz, together, creating an electric charge. Piezoelectric materials can either conduct the charge or store it as a battery.
