Cicada Life Cycles and Characteristics

The video discusses the periodic emergence of cicadas, focusing on their 17-year and 13-year lifecycles. It explains the existence of different broods and species, their synchronized life cycles, and the evolutionary development of distinct mating calls. The significance of prime number lifespans is highlighted, along with the rarity of brood overlaps. The video concludes with a reminder of the cicadas' fascinating nature and their infrequent appearances.

How often do cicadas emerge in the Northeast US?

• Every 10 years

• Every 13 years

• Every 17 years

• Every 20 years

What is the total number of cicada broods in the US?

• 10

• 12

• 15

• 17

How many broods of cicadas have a 17-year life span?

• 17

• 15

• 12

• 10

Which region hosts cicada broods with a 13-year life span?

• Midwest US

• Northeast US

• Southern US

• Western US

What is the common ancestor of all periodical cicadas believed to have lived?

• 1 million years ago

• 2 million years ago

• 3 million years ago

• 4 million years ago

What is the distinctive feature of the mating call of the 'pharaoh cicada'?

• A rapid series of clicks

• A long call that builds up slowly

• A buzzing sound

• A call that sounds like 'pharaoh'

Which cicada species emits a rapid series of clicks followed by a buzzing sound?

• Pharaoh

• Desim

• Cai

• Decula

In which year will the life cycles of a 13-year brood and a 17-year brood overlap again after 2014?

• 2214

• 2235

• 2277

• 2256

Why are the life spans of cicada broods significant?

• They are even numbers

• They are Fibonacci numbers

• They are prime numbers

• They are multiples of 5

How many years will pass before the 13-year and 17-year broods overlap again after 2014?

• 300 years

• 221 years

• 150 years

• 100 years