# Forms of Energy and Energy Conversion

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## 24 Questions

Crest

Amplitude

Wavelength

Analog signals

Digital signals

### Where can sound waves travel through?

Solids, liquids, and gases

### What determines the sound's pitch?

Speed of sound waves

String family

### What type of electricity stays in the place it was created and doesn't move from one place to another?

Static electricity

### What is the form of electricity when an electrical charge is given a path to move through?

Current electricity

Conductors

### How is electricity generated by making electrons move around each other?

Friction between objects

Kinetic energy

Potential energy

### What is the term used for the process of changing energy from one form to another?

Energy transformation

### According to the Law of Conservation of Energy, what happens to the total amount of energy in the Universe?

It remains constant

### Which law states that the total energy of a system remains constant?

First Law of Thermodynamics

### In which scenario is chemical energy converted to kinetic energy?

When a person eats food and moves

Chemical energy

### What is the result of turning on a light in your bedroom?

Conversion of electrical energy to light and heat

### What happens when you use a microwave?

It transforms electrical energy to heat energy

### What happens when a person moves?

Kinetic energy is converted to potential energy

### What type of energy makes a mobile phone work?

Electrical energy

### What kind of engine burns gasoline and generates mechanical energy for a car to move?

Internal combustion engine

## Study Notes

### Waves

• The highest point of a wave is known as the crest.
• The distance from the wave's crest to its resting position is known as amplitude.
• The length of a wave between the same points of two waves is called wavelength.

### Signals

• Analog signals are made of waves with a continuous pattern.
• Digital signals contain binary code of zeros and ones.

### Sound

• Sound waves can travel through solids, liquids, and gases.
• The sound's pitch is determined by the frequency of the wave.

### Instruments

• The string family of instruments manipulates sound waves to make music.

### Electricity

• Static electricity stays in the place it was created and doesn't move from one place to another.
• Current electricity is the form of electricity when an electrical charge is given a path to move through.
• Conductors are things that allow easy travel of electricity.
• Electromagnetic induction is the process of generating electricity by making electrons move around each other.

### Energy

• Kinetic energy is the type of energy due to motion.
• Potential energy is the type of energy stored, or due to position.
• The term used for the process of changing energy from one form to another is energy conversion.
• According to the Law of Conservation of Energy, the total amount of energy in the Universe remains constant.
• The Law of Conservation of Energy states that the total energy of a system remains constant.

### Energy Conversion

• Chemical energy is converted to kinetic energy in a scenario such as a car engine.
• Chemical energy is converted to mechanical energy in a car engine.
• When you turn on a light in your bedroom, electrical energy is converted to light and heat energy.
• When you use a microwave, electrical energy is converted to heat energy.
• When a person moves, chemical energy is converted to kinetic energy.
• Mobile phones work by using electrical energy.
• A gasoline engine burns gasoline and generates mechanical energy for a car to move.

Learn about the different forms of energy such as kinetic and potential energy, and how energy can be converted from one form to another. Understand the concept of energy transformation and its practical examples.

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