Types of Energy online worksheet - Free Printable

Let's solve this step by step.

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Part 1: Match the definitions to the types of energy

We have 7 types of energy on the left and 7 definitions on the right. We need to match them correctly.

#### Step-by-step matching:

1. Sound energy
→ *"It’s transmitted through waves when there is a vibration"*
✔ Correct match: Sound energy is created by vibrations that travel as waves.

2. Mechanical energy
→ *"It’s the sum of potential and kinetic energy, and it’s associated with movement and position"*
✔ Correct match: Mechanical energy includes both motion (kinetic) and stored energy due to position or shape (potential).

3. Chemical energy
→ *"It’s stored inside matter and released by a chemical reaction"*
✔ Correct match: Chemical energy is stored in the bonds between atoms and released during reactions (e.g., burning fuel, digestion).

4. Luminous energy
→ *"It’s produced by sources of light"*
✔ Correct match: Luminous energy is light energy — emitted by things like the sun, bulbs, etc.

5. Thermal energy
→ *"It’s produced by the rise of temperature in an object"*
✔ Correct match: Thermal energy is the internal energy from the movement of particles; increases with temperature.

6. Nuclear energy
→ *"It comes from the nucleus of the atom"*
✔ Correct match: Nuclear energy is released during nuclear reactions (fission/fusion) in the nucleus.

7. Electrical energy
→ *"It’s produced by moving electric charges (electrons)"*
✔ Correct match: Electrical energy results from the flow of electrons through a conductor.

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✔ Final Matching:

| Type of Energy | Definition |
|-----------------------|----------|
| Sound energy | It’s transmitted through waves when there is a vibration |
| Mechanical energy | It’s the sum of potential and kinetic energy, and it’s associated with movement and position |
| Chemical energy | It’s stored inside matter and released by a chemical reaction |
| Luminous energy | It’s produced by sources of light |
| Thermal energy | It’s produced by the rise of temperature in an object |
| Nuclear energy | It comes from the nucleus of the atom |
| Electrical energy | It’s produced by moving electric charges (electrons) |

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Part 2: Choose the correct type of energy for each example

Now let’s analyze each scenario:

1. Baking a cake in the oven when the heat of the oven is transferred to the cake so that it cooks.
→ Heat is being transferred → Thermal energy
✔ Answer: thermal

2. During photosynthesis, plants use the energy from the Sun to obtain their nutrients.
→ The Sun emits light → Plants convert light into chemical energy
→ So the energy source is luminous energy (light)
✔ Answer: luminous

3. Uranium is used to produce electrical energy in a power plant.
→ Uranium undergoes nuclear fission → releases nuclear energy
✔ Answer: nuclear

4. When we digest food, we transform their energy to obtain nutrients.
→ Food contains stored energy in chemical bonds → broken down via chemical reactions
→ This is chemical energy
✔ Answer: chemical

5. Lightning happens when electricity is released into the atmosphere.
→ Lightning is a sudden flow of electric charge → electrical energy
✔ Answer: electrical

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✔ Final Answers for Part 2:

1. Baking a cake → thermal
2. Photosynthesis → luminous
3. Uranium in power plant → nuclear
4. Digesting food → chemical
5. Lightning → electrical

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✔ Summary of Answers

#### Part 1: Matching
- Sound energy → Transmitted through waves when there is a vibration
- Mechanical energy → Sum of potential and kinetic energy, related to movement and position
- Chemical energy → Stored inside matter, released by chemical reaction
- Luminous energy → Produced by sources of light
- Thermal energy → Produced by rise in temperature
- Nuclear energy → Comes from the nucleus of the atom
- Electrical energy → Produced by moving electric charges (electrons)

#### Part 2: Examples
1. Baking a cake → thermal
2. Photosynthesis → luminous
3. Uranium in power plant → nuclear
4. Digesting food → chemical
5. Lightning → electrical

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