Question

forms of energy chart’ below.

1. forms of kinetic energy

______ is the energy of moving things
example
thermal energy is
____________________
____________________
____________________
____ is ____
____________________
____________________
____________________
______ is the energy that of vibrations. we can hear some of this energy but not all forms of it, like ultrasonic.
electrical is ______
____________________
____________________
____________________

1. forms of potential energy

______ is energy found in fuel sources like food, wood or gasoline.
example
nuclear is
____________________
____________________
____________________
____ is ____
____________________
____________________
____________________
a book on a shelf, a ball that was thrown up in the air
______ is the energy of elastic material that is stretched, compressed or twisted
electrical is ______
____________________
____________________
____________________
b. describe the form(s) of energy each example represents.

1. wind __________________
2. fire __________________
3. microwave __________________
4. talking __________________
5. lightning __________________
6. fuel __________________
7. book on a shelf __________________

c. list the energy transformations that occur as each object works.

1. hair dryer (3)

____ to __ and ____

1. electric keyboard (2)

____ to ____

1. photosynthesis (2)

____ to ____

1. wind turbine (3)

____ to __ and ____

Answer:

Part A: Filling the Energy Chart

1. Forms of Kinetic Energy

• First row (General Kinetic Energy):

Kinetic Energy is the energy of moving things. Example: A moving car (or any moving object like a running person, falling ball).

• Thermal Energy:

Thermal energy is the energy of moving particles (heat energy). Example: A hot cup of coffee, a burning fire (releases thermal energy).

• Light Energy:

Light energy is energy that travels in waves (electromagnetic radiation). Example: The sun, flashlights (given), light bulbs.

• Sound Energy:

Sound energy is the energy of vibrations. We can hear some of this energy but not all forms of it, like ultrasonic. Example: A ringing bell, someone talking.

• Electrical Energy (Kinetic):

Electrical energy is the energy of moving electrons. Example: Electricity flowing through a wire, a working laptop (uses electrical energy).

2. Forms of Potential Energy

• First row (Chemical Potential Energy):

Chemical energy is energy found in fuel sources like food, wood, or gasoline. Example: A candy bar (stores chemical energy), a log of wood.

• Nuclear Energy:

Nuclear energy is energy stored in the nucleus of an atom (released in nuclear reactions). Example: Nuclear power plants, the sun (nuclear fusion).

• Gravitational Potential Energy:

Gravitational potential energy is energy stored due to an object’s height. Example: A book on a shelf, a ball that was thrown up in the air (given).

• Elastic Potential Energy:

Elastic potential energy is the energy of elastic material that is stretched, compressed, or twisted. Example: A stretched rubber band, a compressed spring.

• Electrical Energy (Potential):

Electrical potential energy is energy stored in charged particles (before they move). Example: A battery (stores electrical potential energy to power a device).

Part B: Identifying Energy Forms in Examples

1. Wind: Kinetic energy (air molecules are moving).
2. Fire: Thermal energy (releases heat) and light energy (produces light), plus chemical energy (from burning fuel like wood).
3. Microwave: Electrical energy (to power the device) and electromagnetic (microwave) energy (to heat food), which is a type of light energy.
4. Talking: Sound energy (vibrations from vocal cords) and sometimes thermal energy (from the body).
5. Lightning: Electrical energy (moving charges) and light energy (flashes) and thermal energy (heat from the discharge).
6. Fuel: Chemical potential energy (stored in bonds of molecules like gasoline or wood).
7. Book on a shelf: Gravitational potential energy (stored due to its height above the ground).

Part C: Energy Transformations

1. Hair Dryer:

Electrical energy (from the outlet) → Thermal energy (heats air) and Sound energy (from the fan) and Kinetic energy (fan blades moving air).
(Simplified: Electrical → Thermal + Kinetic + Sound)

1. Electric Keyboard:

Electrical energy (from the outlet/battery) → Sound energy (from the keys’ speakers) and Light energy (from LED lights, if present).
(Simplified: Electrical → Sound + Light)

1. Photosynthesis:

Light energy (from the sun) → Chemical potential energy (stored in glucose molecules in plants).

1. Wind Turbine:

Kinetic energy (from moving wind) → Mechanical energy (turbine blades spinning) → Electrical energy (generated by the turbine) and Thermal energy (minor, from friction).
(Simplified: Kinetic → Mechanical → Electrical + Thermal)

Final Answers (Key Highlights)

• Part A: Filled with definitions and examples for each energy type.
• Part B:

1. Kinetic
2. Thermal, Light, Chemical
3. Electrical, Electromagnetic (Light)
4. Sound
5. Electrical, Light, Thermal
6. Chemical Potential
7. Gravitational Potential

• Part C:

1. Electrical → Thermal, Kinetic, Sound
2. Electrical → Sound, Light
3. Light → Chemical
4. Kinetic → Mechanical → Electrical, Thermal

(Note: Answers may vary slightly based on interpretation, but these align with standard energy concepts.)