Smart Sponge Device Captures Water

What is the main material used in the smart sponge device?

• Maple wood

• Pine wood

• Balsa wood

• Oak wood

What is the purpose of the smart sponge device?

• To purify water

• To generate electricity

• To capture water from thin air

• To store solar energy

Which university is associated with the development of the smart sponge device?

• Oxford University

• Harvard University

• Stanford University

• RMIT University

What is the range of humidity levels in which the device is effective?

• 20% to 80%

• 10% to 50%

• 30% to 90%

• 50% to 100%

What is the water absorption capacity of the device at 90% relative humidity?

• 0.5 mL per gram

• 2 mL per gram

• 1 mL per gram

• 3 mL per gram

What is the main advantage of using balsa wood in the device?

• It is waterproof

• It is widely available, biodegradable, and cheap

• It is a good conductor of electricity

• It is resistant to fire

What is the daily water collection efficiency of the device in outdoor tests?

• 94%

• 80%

• 70%

• 60%

What is the temperature range in which the device operates effectively?

• 15°C to 45°C

• 10°C to 60°C

• 0°C to 40°C

• 5°C to 55°C

What is the device's water absorption rate at 30% humidity?

• 0.6 mL per gram

• 1.2 mL per gram

• 0.3 mL per gram

• 0.9 mL per gram

What is the main chemical used to modify the balsa wood in the device?

• Lithium chloride

• Magnesium sulfate

• Sodium chloride

• Calcium carbonate