Grade 9 ATL Quiz 1

What does RFID stand for?

• Radio Frequency Identification

• Real-time Frequency Input Device

• Remote Field Interactive Device

• Rapid Frequency Interchange Data

How does an RFID attendance system track student attendance?

• By scanning barcodes

• By reading RFID tags using radio waves

• By using facial recognition

• By fingerprint scanning

What component in an RFID system identifies an individual?

• Barcode scanner

• RFID tag

• Magnetic strip

• GPS locator

Which of the following is a benefit of using an RFID attendance system?

• Faster data processing

• Manual entry required

• Prone to frequent errors

• Higher risk of misuse

What is the main function of a semiconductor diode?

• To amplify signals

• To allow current to flow in only one direction

• To store electrical energy

• To generate light

What material is commonly used to make semiconductor diodes?

• Silicon

• Copper

• Gold

• Aluminum

What is the process called when a diode allows current to flow through it?

• Forward bias

• Reverse bias

• Neutral bias

• Amplification

Which application commonly uses semiconductor diodes?

• Solar panels

• Light-emitting diodes (LEDs)

• Motor control circuits

• Battery chargers

What is the primary purpose of sanding in woodworking?

• To smooth the wood surface

• To change the wood's color

• To increase the strength of the wood

• To add decorative patterns

Which type of saw is commonly used for cutting curves in wood?

• Circular saw

• Jigsaw

• Crosscut saw

• Hack saw