Energy transformation ditto | PDF - Free Printable

Since I can't view or access uploaded images directly, I can’t see the specific content of your image. However, based on the text you've provided, it looks like a worksheet about energy transformations. I’ll help you solve and explain each question step by step.

Let’s go through the questions one by one:

---

1. Most activities involve one form of energy being ________ to another form.

✔ Answer: *Transformed*

Explanation: Energy is constantly changing from one form to another (e.g., chemical → thermal, electrical → light). This process is called energy transformation.

---

2. When energy transformations occur, ________ energy is always produced.

✔ Answer: *Thermal* (or *Heat*)

Explanation: In most energy transformations, some energy is lost as heat due to friction, resistance, or inefficiency. Even in efficient systems, heat energy is always a byproduct.

---

3. Complete the chart for energy transformations that occur in different devices.

| Device | Starting Energy | Changes to |
|----------------|------------------|---------------------|
| Battery | Chemical energy | Electrical energy |
| Clothes dryer | Electrical energy | Thermal energy |
| Car engine | Chemical energy | Mechanical energy |
| Fireplace | Chemical energy | Heat energy |
| Fan | Electrical energy | Mechanical energy |
| Drum | Mechanical energy | Sound energy |

✔ Explanation:
- Battery: Stores chemical energy and converts it to electrical energy.
- Clothes dryer: Uses electricity to generate heat (thermal energy).
- Car engine: Burns fuel (chemical energy) to produce motion (mechanical energy).
- Fireplace: Wood burns (chemical → heat).
- Fan: Electricity turns motor → mechanical motion.
- Drum: You hit it (mechanical input) → produces sound.

---

4. What is the energy transformation that occurs in a ceiling fan?

a) electrical to chemical
b) mechanical to electrical
c) electrical to mechanical
d) mechanical to thermal

✔ Answer: c) electrical to mechanical

Explanation: A ceiling fan uses electricity to spin its blades — this is electrical energy → mechanical energy.

---

5. What energy transformation is occurring in a campfire?

a) chemical to mechanical
b) chemical to mechanical and thermal
c) chemical to light and thermal
d) thermal to light

✔ Answer: c) chemical to light and thermal

Explanation: Wood (chemical energy) burns → releases light (from flames) and heat (thermal energy).

---

6. What energy transformation occurs in a green plant on a sunny day?

a) chemical energy to mechanical energy
b) light energy to chemical energy
c) mechanical energy to light energy
d) chemical energy to heat energy

✔ Answer: b) light energy to chemical energy

Explanation: During photosynthesis, plants convert sunlight (light energy) into chemical energy stored in glucose.

---

7. What energy transformation occurs when you rub your hands together?

a) mechanical energy to thermal energy
b) mechanical energy to chemical energy
c) chemical energy to mechanical energy
d) heat energy to mechanical energy

✔ Answer: a) mechanical energy to thermal energy

Explanation: Rubbing hands creates friction → movement (mechanical) → generates heat (thermal).

---

8. Which type of energy is contained in a tank of gasoline?

a) chemical
b) mechanical
c) electrical
d) thermal

✔ Answer: a) chemical

Explanation: Gasoline stores chemical energy in its molecular bonds. When burned, this energy is released.

---

9. Stored energy is...

a) kinetic energy
b) potential energy
c) mechanical energy
d) gravitational energy

✔ Answer: b) potential energy

Explanation: Potential energy is energy stored due to position or state (e.g., in a stretched spring, elevated object, or chemical bonds).

---

10. Which type of energy is contained in a tank of gasoline?

Wait — this seems to be a repeat of question 8.

But assuming it's meant to be a separate question, let's re-check:

If it's asking again: "Which type of energy is contained in a tank of gasoline?"

✔ Answer: a) chemical

---

✔ Final Answers Summary:

1. Transformed
2. Thermal
3. Chart completed as above
4. c) electrical to mechanical
5. c) chemical to light and thermal
6. b) light energy to chemical energy
7. a) mechanical energy to thermal energy
8. a) chemical
9. b) potential energy
10. a) chemical

---

Let me know if you'd like this formatted as a printable answer key or need explanations tailored for students!