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Albert Lin uses...... to locate the things above the ground

• Ground penetrating radar

• Magnetometer

• GPS

• B&C

Your friend sent a location of his address. This means he used....

• Ground penetrating radar

• Magnetometer

• GPS

• Drone

The archeologists'tool save ........

• Effort

• Cost

• Time

• All of them

....... stands for ground penetrating radar

• GPS

• ICT

• GPR

• None of them

........ is used to detect metal underground

• Ground penetrating radar

• Drone

• GPS

• Magnetometer