Free printable worksheet on types of energy for Grade 6 students, covering concepts like kinetic, potential, and chemical energy with multiple-choice questions.

Problem: Solve the worksheet on "Types of Energy" and explain each answer.

#### Worksheet Questions and Solutions:

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1. Energy is

- Options:
a. only found in batteries.
b. never used for fun.
c. the ability to move or change matter.
d. none of the above.

- Correct Answer: c. the ability to move or change matter.

- Explanation: Energy is defined as the ability to do work, which includes moving objects or causing changes in matter. It is not limited to batteries (option a) or restricted to serious purposes (option b). Therefore, option c is the correct definition.

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2. Any energy that is stored is called ________ energy.

- Options:
a. kinetic
b. cooking
c. potential
d. thermal
e. sound
f. electrochemical

- Correct Answer: c. potential

- Explanation: Potential energy is the energy stored in an object due to its position, state, or composition. Examples include gravitational potential energy, elastic potential energy, and chemical potential energy. Kinetic energy (option a) is the energy of motion, so it is not stored.

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3. Energy stored in the bonds between atoms is called

- Options:
a. kinetic energy.
b. mechanical energy.
c. chemical energy.
d. thermal energy.

- Correct Answer: c. chemical energy.

- Explanation: Chemical energy is the energy stored in the bonds between atoms or molecules. When these bonds are broken or formed, chemical energy can be released or absorbed. This is distinct from kinetic energy (motion), mechanical energy (position and motion), and thermal energy (heat).

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4. Friction causes kinetic energy to be converted into ________.

- Options:
a. potential energy
b. thermal energy
c. mechanical energy
d. electrical energy

- Correct Answer: b. thermal energy.

- Explanation: When friction acts on an object, it opposes motion and converts kinetic energy into heat (thermal energy). This is why rubbing your hands together generates warmth. Potential energy (option a) and mechanical energy (option c) are not directly produced by friction, and electrical energy (option d) is not typically generated in this context.

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5. What do solar panels convert radiant energy into?

- Options:
a. Electrical energy
b. Thermal energy
c. Nuclear energy
d. Kinetic energy

- Correct Answer: a. Electrical energy.

- Explanation: Solar panels capture radiant energy (light) from the sun and convert it into electrical energy through the photovoltaic effect. Thermal energy (option b) is related to heat, nuclear energy (option c) involves atomic reactions, and kinetic energy (option d) is the energy of motion.

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6. The energy possessed by matter due to its motion is ________.

- Options:
a. potential energy
b. kinetic energy
c. static energy
d. none of the above

- Correct Answer: b. kinetic energy.

- Explanation: Kinetic energy is the energy an object possesses due to its motion. Potential energy (option a) is stored energy, and "static energy" (option c) is not a standard term in physics. Therefore, option b is correct.

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7. Which form of energy does a plant store when light is transformed during photosynthesis?

- Options:
a. chemical energy
b. thermal energy
c. mechanical energy
d. electrical energy

- Correct Answer: a. chemical energy.

- Explanation: During photosynthesis, plants convert light energy into chemical energy, which is stored in glucose (a sugar molecule). This chemical energy can later be used by the plant for growth and other processes. Thermal energy (option b), mechanical energy (option c), and electrical energy (option d) are not directly involved in this process.

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8. A car or truck moving down the highway has ________ energy by virtue of its motion.

- Options:
a. kinetic
b. potential
c. thermodynamic
d. chemical

- Correct Answer: a. kinetic.

- Explanation: Kinetic energy is the energy of motion. Since the car or truck is moving, it possesses kinetic energy. Potential energy (option b) is stored energy, thermodynamic energy (option c) is a broader concept, and chemical energy (option d) is unrelated to motion.

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9. A football player running for a touchdown exemplifies ________.

- Options:
a. mechanical energy
b. thermal energy
c. chemical energy
d. radiant energy

- Correct Answer: a. mechanical energy.

- Explanation: Mechanical energy is the sum of kinetic energy (due to motion) and potential energy (due to position). When a football player runs, they exhibit both motion and may have some potential energy if elevated (e.g., jumping). Thermal energy (option b) is heat, chemical energy (option c) is stored in molecules, and radiant energy (option d) is energy carried by waves.

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10. A generator converts mechanical energy to ________ energy.

- Options:
a. heat
b. electrical
c. radiant
d. chemical

- Correct Answer: b. electrical.

- Explanation: Generators use mechanical energy (from a rotating shaft, often driven by a turbine) to produce electrical energy through electromagnetic induction. Heat (option a), radiant energy (option c), and chemical energy (option d) are not the primary outputs of a generator.

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11. A student placed one hundred dominoes upright in a row. He knocked over the first domino and the rest all fell over, one after another. What made the dominoes move?

- Options:
a. chemical energy
b. heat energy
knocking over the first domino initiates a chain reaction where each domino transfers its mechanical energy to the next one, causing them all to fall.

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12. An example of the transformation of energy is

- Options:
a. energy changing from potential to kinetic.
b. energy changing from radiant to electrical.
c. energy changing from chemical to thermal.
d. all of the above.

- Correct Answer: d. all of the above.

- Explanation: All three options represent valid examples of energy transformation:
- Option a: Potential energy (e.g., a raised ball) can be converted into kinetic energy (the ball falling).
- Option b: Radiant energy (light) can be converted into electrical energy (as in solar panels).
- Option c: Chemical energy (e.g., burning fuel) can be converted into thermal energy (heat).

Since all three transformations are correct, the best answer is "all of the above."

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Final Answers:

1. c. the ability to move or change matter.
2. c. potential
3. c. chemical energy.
4. b. thermal energy
5. a. Electrical energy
6. b. kinetic energy
7. a. chemical energy
8. a. kinetic
9. a. mechanical energy
10. b. electrical
11. c. mechanical energy
12. d. all of the above

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Boxed Final Answer:

\[
\boxed{
\begin{array}{ll}
1. & \text{c. the ability to move or change matter.} \\
2. & \text{c. potential} \\
3. & \text{c. chemical energy.} \\
4. & \text{b. thermal energy} \\
5. & \text{a. Electrical energy} \\
6. & \text{b. kinetic energy} \\
7. & \text{a. chemical energy} \\
8. & \text{a. kinetic} \\
9. & \text{a. mechanical energy} \\
10. & \text{b. electrical} \\
11. & \text{c. mechanical energy} \\
12. & \text{d. all of the above.}
\end{array}
}
\]