- Q1: What material did the Greeks rub to observe sparks?
Answer: Amber
Explanation: The Greeks noticed that when amber was rubbed, it attracted light objects, producing sparks. - Q2: What is the Greek name for amber?
Answer: Electron
Explanation: The word ‘electricity’ originates from the Greek word ‘electron’ meaning amber. - Q3: What is produced when amber is rubbed with fur?
Answer: Charge
Explanation: Rubbing amber generates an electric charge due to transfer of electrons. - Q4: What is the process of rubbing two objects to develop charge called?
Answer: Friction
Explanation: Friction between two objects causes electrons to move, generating static electricity. - Q5: What kind of electricity is developed by rubbing objects?
Answer: Static
Explanation: Static electricity is the result of accumulation of electric charge on an object’s surface. - Q6: What particles are transferred during rubbing to create electric charge?
Answer: Electrons
Explanation: Rubbing transfers electrons from one object to another, creating negative and positive charges. - Q7: What type of charge is developed on the object losing electrons?
Answer: Positive
Explanation: When an object loses electrons, it becomes positively charged. - Q8: What type of charge is developed on the object gaining electrons?
Answer: Negative
Explanation: The object that gains electrons becomes negatively charged. - Q9: What natural phenomenon is an example of large-scale static discharge?
Answer: Lightning
Explanation: Lightning is a huge spark caused by the discharge of static electricity in clouds. - Q10: What do like charges do when brought near each other?
Answer: Repel
Explanation: Like charges repel each other, which is a basic property of electric charges.