2. Why is sound energy important to all living things? A. It makes work easier. B. It enables us to do work. C. It can make communication easy. D. It enables us to understand what is going on around us. 3. Which situation will show heat transfer by radiation? A. boiling of water c. roasting chicken B. ironing of clothes D. sunbathing during summer 4. Heat energy has many uses. Which of the following is NOT a use of heat energy? A. Heat energy is used to warm the surroundings. B. Heat energy is used to generate electricity. C. Heat energy is used for communication. D. Heat energy is used for cooking. 5. Light energy has many uses. Which of the following is NOT? A. Light helps us to see things. B. Light produces sounds in music. C. Light helps plants to make food and grow. D. Light is used in many electronic appliances. 6. Which of the following is NOT a natural source of light energy? A. sun C. traffic light B. stars C. traffic lights D. electricity in storms a 7. Heat energy is transferred to the environment through the following EXCEPT A. conduction C. extension B. convection D. radiation 8. Which of the following is NOT a good effect of heat energy? A. Heat energy is used for cooking. B. Heat energy is used for communication. C. Heat energy is used to generate electricity. D. Heat energy is used to warm the surroundings 9. What energy transformation is happening when you plug in the radio to the electrical and the music starts to play? A. Electrical energy to sound energy B. Sound energy to electrical energy C. Sound energy to electrical energy to sound energy D. Electrical energy to sound energy to electrical energy​