Information Transfer and the Universe Review

What is the primary function of a microphone in audio technology?

• To convert electrical energy into sound waves

• To amplify sound waves

• To convert sound waves into analog electrical signals

• To store sound waves

Tags

NGSS.MS-PS4-2

How are a microphone and a speaker similar in their function?

• Both store sound waves

• Both transduce between electrical energy and wave energy of sound

• Both amplify sound waves

• Both convert sound waves into digital signals

What type of waves does ultrasound use in medical imaging?

• Electromagnetic waves

• High frequency mechanical waves

• Radio waves

• Infrared waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is the primary use of MRI in medical imaging?

• To examine bone fractures

• To show detail of soft tissues such as tendons and ligaments

• To detect dental cavities

• To measure blood pressure

What is the primary function of an antenna?

• To transmit and receive EM waves

• To store electrical energy

• To convert sound waves into electrical signals

• To amplify sound

Tags

NGSS.MS-PS2-3

What is encoding?

• The process of converting data from one form to another

• The process of storing data in a digital format

• The process of deleting data

• The process of compressing data

Tags

NGSS.MS-PS4-3

How was information stored before computers?

• In a digital manner

• In an analog manner

• In a binary manner

• In a compressed manner

What is digital information represented by?

• Continuous waves

• Discrete units called bits

• Analog signals

• Electrical currents

Tags

NGSS.MS-PS4-3

What is the term used for the small parts into which an image is broken for encoding?

• Bits

• Pixels

• Bytes

• Vectors

What is the purpose of sampling in digital recordings?

• To enhance sound quality

• To digitally represent the value of the original analog waveform at a precise point in time

• To convert sound into light

• To increase the volume of sound

Tags

NGSS.MS-PS4-3