Zoe is setting up a smart greenhouse and wants to ensure the plants are kept at the right conditions. She installs a device to monitor the air and needs to know what it is primarily used for. What is the main purpose of a temperature sensor?

James is working on a project to measure the force applied to a bridge. He needs to choose an electrical sensor for this purpose. Which of the following should he select?

David is feeling unwell and wants to check his health at home. He uses a glucometer. What does the glucometer measure?

Priya is designing an automatic door system that opens when someone approaches. She needs a sensor that uses light to detect changes in the environment. Which type of sensor should Priya use?

Arjun is working in a laboratory and needs to measure the pressure inside a sealed container. He decides to use a piezoelectric pressure transducer for this task. Which principle does this device use to measure pressure?

Emma is working on a construction project and needs to monitor the structural integrity of a bridge. She decides to use a strain gauge for this purpose. What is a strain gauge most commonly used to measure?

Ava installs a sensor in her smart home system that can detect when someone touches or comes close to a surface, such as a light switch. Which of the following best describes how this sensor works?

At a packaging facility, Scarlett needs to automate the process of identifying when a box passes by on a conveyor belt. Which type of sensor would most likely be used for this application?

Which sensor is used to measure the "distance" from the object