Q 01/05

Which blind Marvel superhero from Hell's Kitchen perceives the world through an echolocation-like radar sense?

A) Moon Knight

B) Iron Fist

C) Daredevil

D) Punisher

Answer · why

C) Daredevil

Daredevil was partly inspired by co-creator Bill Everett's daughter, who was legally blind and found that her hearing had become more finely attuned.

Q 02/05

Which ocean liner's sinking led Lewis Fry Richardson to patent an underwater echo detector just a month later?

A) Titanic

B) Lusitania

C) Britannic

D) Andrea Doria

Answer · why

A) Titanic

Titanic went down in April 1912, and the disaster pushed inventors to copy the way bats steer by echoes, work that grew into sonar.

Q 03/05

Which deep-diving ocean giant makes echolocation clicks that are the loudest sound produced by any animal?

A) Pilot whale

B) Sperm whale

C) Humpback whale

D) Fin whale

Answer · why

B) Sperm whale

Sperm whale clicks bounce back and forth inside the enormous head, so researchers can measure an animal's sound-producing organ just by listening.

Q 04/05

Which carnivorous species of Borneo's peat swamps has a sonar-reflecting back wall that guides bats inside to roost?

A) Venus flytrap

B) Butterwort

C) Bladderwort

D) Pitcher plant

Answer · why

D) Pitcher plant

Pitcher plant species Nepenthes hemsleyana shelters woolly bats in its traps and in return takes about a third of its leaf nitrogen from their droppin...

Q 05/05

The US Navy trains bottlenose dolphins to use their natural sonar to find which hidden underwater weapons?

A) Sea mines

B) Torpedoes

C) Depth charges

D) Missiles

Answer · why

A) Sea mines

Sea mines are hunted by the dolphins of the Navy Marine Mammal Program, which also trains California sea lions to recover lost equipment.