Energy transformations

Front

What is energy transformation?

Back

Energy transformation is the process of changing energy from one form to another, such as from chemical energy to electrical energy.

Front

What are the main forms of energy?

Back

The main forms of energy include chemical, electrical, thermal, mechanical, and light energy.

Front

Describe the energy transformation in a digital music player.

Back

In a digital music player, energy transforms from chemical energy (in the battery) to electrical energy, and then to sound energy.

Front

What energy transformation occurs when food is consumed by humans?

Back

When food is consumed, chemical energy is transformed into mechanical energy (for movement) and thermal energy (for body heat).

Front

What is the role of sunlight in photosynthesis?

Back

Sunlight provides light energy, which is transformed into chemical energy by plants during photosynthesis.

Front

Explain the energy transformation when rubbing hands together.

Back

When a student rubs their hands together, chemical energy from food is transformed into mechanical energy (movement) and thermal energy (heat).

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter, often felt as heat.

Front

How does electrical energy transform into thermal energy?

Back

Electrical energy transforms into thermal energy when it passes through a resistor, generating heat.

Front

What is an example of energy transformation in a light bulb?

Back

In a light bulb, electrical energy is transformed into light energy and thermal energy.

Front

What is the process of photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen, transforming light energy into chemical energy.