Multiple Choice
Why do whales, bats, and dolphins use echolocation?
a. to scare away predators
b. to orient themselves and find food
c. to attract mates
d. to tell other animals of their species where they are
b. to orient themselves and find food
the process of finding and object by using reflected sound
a. binary code
b. echo
c. biomimicry
d. coding
e. echolocation
B. Echolocation
1. A method of communication that uses short and long signals to represent letters is called ______________.
a. echolocation
b .binary code
c. Morse code
d. computer programming
c. Morse code
Using nature as a model for human inventions
a. binary code
b. echo
c. biomimicry
d. coding
e. echolocation
biomimicry
2. An echo is heard when sound waves are _____.
a. changed by the Doppler effect
b. absorbed by a material
c. moving through empty space
d. reflected from a surface
d. reflected from a surface
the process of writing a computer program in a language that can be used by a computer.
a. binary code
b. echo
c. biomimicry
d. coding
e. echolocation
coding
A submarine using echolocation to find objects underwater in a similar way to a dolphin is an example of ____________.
a. biomimicry
b. camouflage
c. symbiosis
d. bioluminescence
a. biomimicry
a system of representing a letter, digit, or other character using 0's and 1's
a. binary code
b. echo
c. biomimicry
d. coding
e. echolocation
binary code
a repetition of a specific sound produced by the reflection of sound waves from a surface
a. binary code
b. echo
c. biomimicry
d. coding
e. echolocation
b. echo
How have we used waves to increase the distance over which we can communicate?
By using radio waves in cell phones, radio towers, and satellites, we have increased the distance we can communicate to nearly all of Earth. Radio waves can travel long distances without degrading.