AnswersPBCSD_Grade_Forgiveness_2003310_Physical Science_S2_2022Lab: Thermal Energy Transfer

The Electromagnetic Spectrum Answers

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A student took notes in class.- Uses high frequency sound waves- Creates images from echoes- Has many applications - Medical - Pregnancy - Kidney stones - Cancer - Injury identification - Other - Cleaning - Identification of objects - Breakdown of bacteria - ProductionWhich would be the best title for these notes?

A
Echolocation
B
Ultrasound Technology
C
Digital Signal
D
Analog Signal
2
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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?

A
The generated sound wave will not be able to reflect off of the object.
B
The sound wave will not be generated, so there will be no echoes received.
C
The echoes will be made but will not be able to be received by the machine.
D
The machine can process echoes into images, but with the broken screen, they can't be displayed.
3

Four different people are using sound wave technology.Which describes the form of technology most likely being used by each person?

Question illustration
A
Ali is using specialized headphones, Megan is using a microphone, Kristoff is using a transmitter, and Jenna is using a radio.
B
Ali is using a radio, Megan is using a microphone, Kristoff is using a transmitter, and Jenna is using specialized headphones.
C
Ali is using a radio, Megan is using a transmitter, Kristoff is using a microphone, and Jenna is using specialized headphones.
D
Ali is using specialized headphones, Megan is using a transmitter, Kristoff is using a microphone, and Jenna is using a radio.
4

What happens when the sound waves released by a bat hit an object?

A
The sound waves are diffused.
B
The sound waves are reflected.
C
The sound waves are refracted.
D
The sound waves are absorbed.
5

Which statement best describes echolocation in dolphins?

A
Echolocation helps dolphins find food only.
B
Echolocation helps dolphins find food and avoid predators.
C
Echolocation helps dolphins avoid predators only.
D
Echolocation is not used in dolphins.

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