Test prep: Modern Revolution

How and why has collective learning intensified in the past few centuries?

Better transportation, communication, science, and technology. People can share information faster and with more people.

What are the four world zones that this chapter introduces?

Afro-Eurasia, the Americas, Australasia, and the Pacific.

What are Malthusian Cycles?

When population grows faster than food supplies. Food shortages, disease, or famine may then reduce the population.

What are Milankovitch Cycles?

Changes in Earth's orbit and tilt that affect Earth's climate over long periods.

How do population growth and energy consumption interrelate?

As population grows, people usually need more energy for food, transportation, homes, and industry.

What kinds of things are associated with Threshold 8—the Modern Revolution?

Science, the Industrial Revolution, new technology, fossil fuels, and faster communication and transportation.

What is the Anthropocene Epoch?

Name for a time when human activities have a major effect on Earth's environment and climate.

How can the Industrial Revolution be compared to the Cambrian Explosion? (What and when was the Cambrian Explosion?)

Periods of rapid change.

The Industrial Revolution changed human society, Cambrian Explosion was a rapid increase in animal diversity

What are some possibilities for Threshold 9?

Advanced ai, new energy sources, space exploration, and major changes in human life. Threshold 9 has not yet happened in Big History.