Mass-energy equivalence, famously expressed by Einstein's equation $E=mc^2$, reveals that mass and energy are interchangeable. This means a small amount of mass can be converted into a tremendous amount of energy, and vice versa. In this equation, $E$ represents energy (measured in Joules), $m$ represents mass (measured in kilograms), and $c$ is the speed of light (approximately $3 \times 10^8$ meters per second). The equation demonstrates that energy is equal to mass multiplied by the speed of light squared. This principle is fundamental in nuclear reactions and explains how nuclear power plants and atomic weapons function.
Match the term with its definition:
| Term | Definition |
|---|---|
| 1. Mass | A. The amount of energy equivalent to a certain mass. |
| 2. Energy | B. A constant value representing the speed of light in a vacuum. |
| 3. Speed of Light | C. The property of matter that resists acceleration. |
| 4. $E=mc^2$ | D. The capacity to do work. |
| 5. Mass-Energy Equivalence | E. Einstein's famous equation relating energy and mass. |
Answer Key: 1-C, 2-D, 3-B, 4-E, 5-A
Complete the following paragraph with the correct terms:
Einstein's equation, $E=mc^2$, demonstrates that _______ and _______ are interchangeable. The symbol 'c' represents the _______, a fundamental constant in physics. A small amount of _______ can be converted into a large amount of _______, as seen in nuclear reactions. This relationship is known as _______.
Answer Key: mass, energy, speed of light, mass, energy, mass-energy equivalence
Explain, in your own words, how the principle of mass-energy equivalence is applied in nuclear power plants. Provide a specific example.
Please log in to post your answer.
Log InEarn 2 Points for answering. If your answer is selected as the best, you'll get +20 Points! 🚀