Quantum Physics Fundamentals
Explore the foundational concepts of quantum physics, including wave-particle duality, the uncertainty principle, and quantum entanglement, for Grade 11 science students.
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Quantum Physics Fundamentals
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Read each question carefully and provide your best answer. For multiple choice questions, circle the correct option. For fill-in-the-blank questions, complete the sentence. For short answer questions, write your explanation in the space provided.
1. Which phenomenon best describes the idea that particles can exhibit properties of both waves and particles?
Photoelectric effect
Wave-particle duality
Heisenberg Uncertainty Principle
Quantum entanglement
2. According to the Heisenberg Uncertainty Principle, it is impossible to simultaneously know with perfect accuracy which two properties of a particle?
Mass and charge
Energy and time
Position and momentum
Spin and velocity
3. The energy of a photon is directly proportional to its and inversely proportional to its .
4. Quantum describes the phenomenon where two or more particles become linked in such a way that they share the same quantum state, regardless of the distance between them.
5. In the quantum world, observation does not affect the state of a particle.
True
False
6. The Schrödinger equation is used to describe how the quantum state of a physical system changes over time.
True
False
7. Briefly explain what is meant by the term 'quantum superposition'.
8. Describe one practical application of quantum physics in modern technology.
The image above illustrates the probability density of an electron in a hydrogen atom, a concept derived from quantum mechanics.
Use the words below to complete the sentences.
9. The concept of means that certain physical quantities can only take on discrete values, rather than continuous ones.
10. Light can be described as consisting of discrete packets of energy called .