Grade 6 Exam v1 -Term 3-2024/2025

Why is pure filtered water not a good conductor of electricity?

• Because it contains a lot of minerals.

• Because it doesn't contain any charged particles or ions.

• Because it is too cold.

• Because it has salt already added.

The microbit needs crocodile pin connectors to complete the water level indicator circuit.

• True

• False

A straw can be used as a support structure in building the water level indicator with a microbit.

• True

• False

What is the purpose of the moisture level indicator system?

• To turn on lights in the garden.

• To keep the soil cold.

• To alert when the soil has low moisture.

• To measure plant growth.

What materials are needed for the moisture level indicator system?

• Battery, fan, thermometer.

• Crocodile connector, plant, buzzer.

• Microphone, speaker, water pump.

• Only a microbit and USB cable.

The moisture level indicator system uses sound to notify when the soil is too dry.

• True

• False

A crocodile connector is used to connect components like the buzzer and soil sensor to the microbit.

• True

• False

Which external sensor is used to measure both temperature and humidity in this system?

• DHT22

• NTC Thermistor

• DHT11

• Buzzer

What built-in feature does the microbit have for sensing temperature?

• Humidity sensor.

• Motion detector.

• Thermometer chip.

• Temperature sensor inside the processor.

The DHT11 sensor can measure both humidity and temperature.

• True

• False