Understanding Metadata and Sensors

What is metadata?

• A type of scientific data collected by sensors.

• A set of data that describes and provides information about other data.

• A signal sent from a sensor to a computer.

• A digital signal generated by an ADC.

What is the primary source of scientific data?

• Social media posts.

• Experiments or observations conducted by scientists.

• Data from analogue sensors.

• Online blogs and articles.

How is scientific data typically shared?

• Through casual conversations.

• Published in peer-reviewed journals.

• Uploaded directly to a sensor.

• Sent as a digital signal to a computer.

What must a scientist do to support a hypothesis?

• Publish the hypothesis directly without evidence.

• Collect data through experiments or observations.

• Only collect metadata.

• Convert digital signals to analogue signals.

What is the purpose of sensors in experiments?

• To create metadata.

• To measure specific properties of data and send signals to a computer.

• To manually collect data for scientists.

• To replace the need for observations.

What type of signal do sensors typically send to a computer?

• Digital signals.

• Metadata.

• Analogue (continuous) signals.

• Peer-reviewed signals.

What is the role of an analogue-to-digital converter (ADC)?

• It generates metadata.

• It automates the collection of scientific data.

• It converts analogue signals into digital signals for the computer to understand.

• It measures the properties of sensors.

Which of the following is NOT an example of a sensor?

• Temperature sensor

• Light sensor

• Social media tracker

• Pressure sensor

Why do computers require an analogue-to-digital converter (ADC) for sensor data?

• Computers can only process analogue signals directly.

• Computers require digital signals to understand the data from sensors.

• Computers convert metadata into signals.

• ADCs enhance the quality of metadata.

Which property can be measured using sensors?

• Screen brightness

• Scientific hypotheses

• Temperature, light, pressure, moisture, chemical, and gas

• Metadata details