What is energy?

What law states that energy can neither be crated nor destroyed?

Based on the graph, is the source of electricity in the Philippines sustainable?

• Yes

• No

Describe the energy transformation in a solar streetlight.

Which of the following actions produce light energy?

• playing guitar

• making campfire

• ironing the shirt

• spinning the windmill

What type of energy conversion happens when you draw a picture on the floor?

• chemical -> thermal -> electrical

• thermal -> mechanical -> chemical

• mechanical -> chemical -> thermal

• chemical -> mechanical -> thermal

Which transformation of energy occurs when a fan is turned on and the blades starts to rotate?

• thermal energy to kinetic energy

• electrical energy kinetic energy

• thermal energy to potential energy

• electrical energy to potential energy

What energy transformation occurs when gasoline burns in an automobile?

• thermal -> electrical + mechanical

• mechanical -> chemical + electrical

• chemical -> thermal + nuclear

• chemical -> mechanical + thermal

Which of the following illustrates the energy transformation that occurs during photosynthesis?

• electrical → leaf → thermal energy

• thermal energy → leaf → light energy

• light energy → leaf → chemical energy

• chemical energy → leaf → mechanical energ

Create a device that shows transformation of

Elastic potential energy to Kinetic Energy