Educational worksheet on energy forms and properties, designed to help students understand and apply concepts of heat, chemical, nuclear, light, mechanical, and electrical energy.

Problem Analysis:

The worksheet is divided into three sections:
1. Matching energy types with their definitions.
2. Naming the properties of energy.
3. Identifying the property of energy used in specific scenarios.

Let's solve each section step by step.

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Section 1: Join the type of energy with its definition.

We need to match each type of energy (left column) with its correct definition (right column).

#### Definitions:
- It is associated with the motion and position of an object.
- This describes Mechanical energy because it involves kinetic energy (motion) and potential energy (position).

- It is associated with the presence and motion of electrical charges.
- This describes Electrical energy because it involves the movement of electrons or charged particles.

- Sun and lightnings emit this type of energy.
- This describes Light energy because sunlight and lightning are forms of electromagnetic radiation, which is a type of light energy.

- It is the energy inside the nucleus of an atom.
- This describes Nuclear energy because it refers to the energy stored within atomic nuclei, released during nuclear reactions.

- Sun, lava, or fire emit this type of energy.
- This describes Heat energy because heat is emitted by the sun, lava, and fire as thermal energy.

- It is stored in food and fuels.
- This describes Chemical energy because food and fuels store energy in chemical bonds that can be released through chemical reactions.

#### Matched Pairs:
1. Heat energy → Sun, lava, or fire emit this type of energy.
2. Chemical energy → It is stored in food and fuels.
3. Nuclear energy → It is the energy inside the nucleus of an atom.
4. Light energy → Sun and lightnings emit this type of energy.
5. Mechanical energy → It is associated with the motion and position of an object.
6. Electrical energy → It is associated with the presence and motion of electrical charges.

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Section 2: Name the properties of the energy.

Energy has several fundamental properties. Common properties include:
1. Conservation: Energy cannot be created or destroyed, only transformed from one form to another.
2. Transfer: Energy can be transferred between objects or systems.
3. Transformation: Energy can change from one form to another (e.g., mechanical to electrical).
4. Potential and Kinetic: Energy can exist as potential (stored) or kinetic (in motion).

#### Answer:
The properties of energy are:
- Conservation
- Transfer
- Transformation
- Potential and Kinetic

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Section 3: Identify the property of the energy that is used in each case.

We need to identify which property of energy is being utilized in each scenario.

#### Scenarios:
1. When riding your bike, you move your legs to move the pedals and then the bike.
- Here, you are converting chemical energy (from your body) into mechanical energy (to move the bike). The key property is transformation of energy.

2. When you eat to have energy for later.
- Eating stores chemical energy in your body for future use. The key property is storage of energy.

3. When you plug your TV cable into the socket.
- Plugging in the TV allows electrical energy to flow through the circuit. The key property is transfer of energy.

4. When you turn on your car and it uses the fuel to move.
- The car converts chemical energy in the fuel into mechanical energy to move. The key property is transformation of energy.

#### Answers:
1. Transformation
2. Storage
3. Transfer
4. Transformation

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Final Answer:

1. Matching:
- Heat energy → Sun, lava, or fire emit this type of energy.
- Chemical energy → It is stored in food and fuels.
- Nuclear energy → It is the energy inside the nucleus of an atom.
- Light energy → Sun and lightnings emit this type of energy.
- Mechanical energy → It is associated with the motion and position of an object.
- Electrical energy → It is associated with the presence and motion of electrical charges.

2. Properties of energy:
- Conservation
- Transfer
- Transformation
- Potential and Kinetic

3. Identify the property:
- When riding your bike: Transformation
- When you eat: Storage
- When you plug in your TV: Transfer
- When you turn on your car: Transformation

Boxed Final Answer:
\[
\boxed{
\begin{array}{l}
\text{1. Matching:} \\
\text{- Heat energy → Sun, lava, or fire emit this type of energy.} \\
\text{- Chemical energy → It is stored in food and fuels.} \\
\text{- Nuclear energy → It is the energy inside the nucleus of an atom.} \\
\text{- Light energy → Sun and lightnings emit this type of energy.} \\
\text{- Mechanical energy → It is associated with the motion and position of an object.} \\
\text{- Electrical energy → It is associated with the presence and motion of electrical charges.} \\
\\
\text{2. Properties of energy:} \\
\text{- Conservation} \\
\text{- Transfer} \\
\text{- Transformation} \\
\text{- Potential and Kinetic} \\
\\
\text{3. Identify the property:} \\
\text{- When riding your bike: Transformation} \\
\text{- When you eat: Storage} \\
\text{- When you plug in your TV: Transfer} \\
\text{- When you turn on your car: Transformation} \\
\end{array}
}
\]