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- 1. Multiple Choice
Which refers to a method that relies on sound waves and is used by different animal species for navigation, communication, and finding food?
echolocation
analog signaling
infrared detection
digital location
- 2. Multiple Choice
What happens when the sound waves released by a bat hit an object?
The sound waves are diffused.
The sound waves are reflected.
The sound waves are refracted.
The sound waves are absorbed.
- 3. Multiple Choice
Which statement best describes echolocation in bats?
Echolocation helps bats find food only.
Echolocation helps bats find food and avoid flying into obstacles.
Echolocation helps bats avoid flying into obstacles only.
Echolocation is not used in bats.
- 4. Multiple Choice
Which statement best describes echolocation in dolphins?
Echolocation helps dolphins find food only.
Echolocation helps dolphins find food and avoid predators.
Echolocation helps dolphins avoid predators only.
Echolocation is not used in dolphins.
- 5. Multiple Choice
Mammals are a large group of animals that includes humans, apes, dolphins, bears, bats, cats, and much more. Which statement can be made about this information?
All mammals use echolocation to find food.
Some mammals use echolocation to avoid obstacles.
All mammals use walking as their primary means of transportation.
Some mammals need to find food to survive.
- 6. Multiple Choice
Which best describes the process by which ultrasounds images are made?
Low-frequency sound waves are generated by a machine and refracted off of objects, creating echoes that are processed into images.
High-frequency sound waves are generated by a machine and refracted off of objects, creating echoes that are processed into images.
High-frequency sound waves are generated by a machine and reflected off of objects, creating echoes that are processed into images.
Low-frequency sound waves are generated by a machine and reflected off of objects, creating echoes that are processed into images.
- 7. Multiple Choice
What do ultrasounds use?
radio waves
ultraviolet waves
light waves
sound waves
- 8. Multiple Choice
An ultrasound tech is trying to identify an object, but the machine is broken and is not sending out the sound wave. Which statement best describes this situation?
The generated sound wave will not be able to reflect off of the object.
The sound wave will not be generated, so there will be no echoes received.
The echoes will be made but will be unable to be received by the machine.
The machine will not be able to process the received echoes into images.
- 9. Multiple Choice
An ultrasound machine is being used to try to identify potential kidney stones. The machine is working properly and no kidney stones are found.
Which statement best describes this situation?
The generated sound wave will not be able to reflect off of the object.
The sound wave will not be generated, so there will be no echoes received.
The echoes will be made but will not be able to be received by the machine.
The machine will not be able to process the received echoes into images.
- 10. Multiple Choice
A student took notes in class.
Which would be the best title for these notes?
Echolocation
Ultrasound Technology
Digital Signal
Analog Signal
- 11. Multiple Choice
Which is one way that ultrasound technology may be used?
repairing fractured bones
locating misplaced electrical equipment
cleaning dirty surgical tools
canceling out unwanted noise
- 12. Multiple Choice
Four patients have been diagnosed with medical issues.
Which patients could be best helped using ultrasound technology?
Josh, Ashley, and Lindsay
Josh
Ron
Ashley, Ron, and Lindsay
- 13. Multiple Choice
Which carries information by copying an original sound?
analog signal
digital signal
volume
frequency
- 14. Multiple Choice
Which carries information by changing original sounds into numbers?
analog signal
digital signal
volume
frequency
- 15. Multiple Choice
Which best describes the way a sound wave is sent through the radio?
sound wave → radio wave
radio wave → sound wave
radio wave → sound wave → electrical signal → sound wave
sound wave → electrical signal → radio wave → sound wave
- 16. Multiple Choice
Four different people are using sound wave technology.
Which describes the form of technology most likely being used by each person?
Ali is using specialized headphones, Megan is using a microphone, Kristoff is using a transmitter, and Jenna is using a radio.
Ali is using a radio, Megan is using a microphone, Kristoff is using a transmitter, and Jenna is using specialized headphones.
Ali is using a radio, Megan is using a transmitter, Kristoff is using a microphone, and Jenna is using specialized headphones.
Ali is using specialized headphones, Megan is using a transmitter, Kristoff is using a microphone, and Jenna is using a radio.
- 17. Multiple Choice
Which two animals use echolocation?
bats and humans
bats and dolphins
dolphins and humans
dolphins and butterflies
- 18. Multiple Choice
An ultrasound tech is trying to identify an object, but the screen of the machine is broken. Which statement best describes this situation?
The generated sound wave will not be able to reflect off of the object.
The sound wave will not be generated, so there will be no echoes received.
The echoes will be made but will not be able to be received by the machine.
The machine will not be able to process the received echoes into images.
- 19. Multiple Choice
What do digital signals turn sounds into?
analog signals
interference
continuity
zeros and ones
- 20. Multiple Choice
Which best describes the order of the technology used to transmit a sound through the radio?
microphone → transmitter → microphone
radio → transmitter → radio
radio → transmitter → microphone
microphone → transmitter → radio
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