3.4 Input / Output Devices

Question 1

Acoustic sensor:

Answer 1

Measures sound level, can be used for security systems.

Question 2

Accelerometer:

Answer 2

Measures acceleration, can be used in cars to detect a crash or in phones to provide orientation data.

Question 3

Flow:

Answer 3

Measures the flow of a gas or liquid. Can be used in pipelines.

Question 4

Gas:

Answer 4

Measures gas levels. Can be used in homes to detect CO.

Question 5

Humidity:

Answer 5

Measures moisture in atmosphere. Can be used in galleries, farming.

Question 6

Infra-red:

Answer 6

Measures infra-red radiation, can be used in security systems.

Question 7

Level:

Answer 7

Measure the level of a substance, can be used in cars to measure liquid levels.

Question 8

Light:

Answer 8

Measures light, can be used in automatic lighting systems.

Question 9

Magnetic field:

Answer 9

Measures magnetic field. Can be used to track cars.

Question 10

Moisture:

Answer 10

Measures moisture levels in a substace, can be used in farming.

Question 11

pH:

Answer 11

Measures pH levels, can be used in farming, water pollution tests.

Question 12

Pressure:

Answer 12

Measures the pressure exerted on the sensor. Can be used in security systems.