Give an example of the following conversion :
(a) Kinetic energy into heat energy.
(b) Muscular energy into kinetic energy.
(c) Chemical energy into sound, heat and light energy.
Give an example of the following conversion :
(a) Kinetic energy into heat energy.
(b) Muscular energy into kinetic energy.
(c) Chemical energy into sound, heat and light energy.
Examples for each of the following:
(a) Kinetic energy into heat energy:
Example:
Kinetic energy can be transformed into heat energy by rubbing your hands together.
Explanation:
- The movement of microscopic particles called atoms, molecules, or ions in solids, liquids, and gases produces heat energy.
- There is kinetic energy in the atoms when hands are rubbed. Because of the motion of atoms, this energy is turned into heat energy, so we feel warm.
(b) Muscular energy into kinetic energy:
Example:
Climbing up the hill.
Explanation:
You are working against gravity as you climb up the hill. Since you're moving while climbing, some of your muscular energy is converted to kinetic energy, which is the energy that an object has because of its motion. Hence, muscular energy is converted to kinetic energy.
(c) Chemical energy into sound, heat, and light energy:
Example:
Coal: Combustion transfers chemical energy into light and heat.
Wood: Combustion transfers chemical energy into light and heat.
Petroleum: Can be burned to produce light and heat, or it can be converted into another chemical energy form, such as gasoline.
Cracker: The burning of a cracker changes chemical energy into light, heat, and sound energy.
Examples for each of the following:
(a) Kinetic energy into heat energy:
Example:
Kinetic energy can be transformed into heat energy by rubbing your hands together.
Explanation:
- The movement of microscopic particles called atoms, molecules, or ions in solids, liquids, and gases produces heat energy.
- There is kinetic energy in the atoms when hands are rubbed. Because of the motion of atoms, this energy is turned into heat energy, so we feel warm.
(b) Muscular energy into kinetic energy:
Example:
Climbing up the hill.
Explanation:
You are working against gravity as you climb up the hill. Since you're moving while climbing, some of your muscular energy is converted to kinetic energy, which is the energy that an object has because of its motion. Hence, muscular energy is converted to kinetic energy.
(c) Chemical energy into sound, heat, and light energy:
Example:
Coal: Combustion transfers chemical energy into light and heat.
Wood: Combustion transfers chemical energy into light and heat.
Petroleum: Can be burned to produce light and heat, or it can be converted into another chemical energy form, such as gasoline.
Cracker: The burning of a cracker changes chemical energy into light, heat, and sound energy.
