Unit 3 Monitor and control

Anthony asks What is meant by Peizoresistance

• a specific level of electrical charge that is linked to a specific level of resistance or pressure.
• a specific level of electrical charge that is linked to a specific level of movement.
• a specific level of electrical charge that is linked to a specific level of light.
• a specific level of electrical charge that is linked to a specific level of temperature.
• It is used to measure atmospheric pressure in weather station.

Gia asks What is a reed switch used to do?

• It is used in environmental and water pollution monitoring.
• It is used to help measure rainfall.
• It is used to convert sound waves in to voltages or electric signals.
• It is used to measure atmospheric pressure in weather station.
• It measures rainfall and when the bucket is filled with rainwater, it tips over and empties out the water then tips back over to collect more rainfall.

Jack asks What is a tipping bucket and reed switch used for and what does it do?

• It measures the absolute and relative humidity and measures the number of grams of water per cubic meter of air.
• It measures the temperature of the surrounding air.
• It measures the number of hours of sunlight and has an array of sensors which collectively measure the intensity of light radiation.
• It measures rainfall and when the bucket is filled with rainwater, it tips over and empties out the water then tips back over to collect more rainfall.
• Monitor unltraviolet levels using a phone.;

Alex asks Choose one method a person could use to monitor the quality of a city.

• Monitor sound using a speaker.
• Monitor the air levels of a city using a O2 and CO2 sensors.
• Monitor soil PH using a microprocessor.
• Monitor unltraviolet levels using a phone.;
• Monitoring how many types of snacks there are in a grocery store.

Jack asks Which is a method of environmental monitoring?

• Monitoring soil quality in outdoor gardens and also in greenhouses/glasshouses using pH and moisture sensors.
• Monitoring the amount of trash and debris outside of the earth's atmosphere in space.
• Monitoring the amount of trash and dirty clothes that are on the ground in your bedroom.
• Monitoring how many types of snacks there are in a grocery store.
• Comparing values of a sensor to a known measurement.

Alex asks What is calibration?

• When you calibrate a sensor using your hands.
• Comparing physical values with fake values from the web.
• Measuring the temperature of boiling water with your hand first.
• Comparing values of a sensor to a known measurement.
• A motion sensor that reads sound and movement

Kiah asks what are Passive motion sensors

• sensors that detect sun light in the environment
• Sensors that reads energy in its surrounding and detects changes caused movement
• A machine that measures passivitivesism
• A motion sensor that reads sound and movement
• collecting data on humidity

anthony asks "what is a temperature sensor used for?"

• collecting data on the moisure
• collecting data on sunshine levels
• collecting data on movement
• collecting data on humidity
• Water sensor

Adam asks Which is not a type of sensor?

• Accelerometer
• Humidity sensor
• Piezometer sensor
• Water sensor
• It measure infrared light and converts the radiation emitted into electrical signals.

Jack asks What do ultraviolet sensors do?

• They measure the amount of light. When light falls on the sensor, it generates electrical energy which is then converted to give a value for the amount of light.
• It measures pressure and converts the force applied to its surface to generate electrical energy. This is then converted into values to represent applied pressure.
• It measures sound. This converts sound waves into voltages or electrical signals which are convrted by the computer into values to represent sound.
• It measure infrared light and converts the radiation emitted into electrical signals.
• photoresistor