1. COMPETENCIES FOR SCIENCE IV - NAT
1. Infer that the total mass-energy in the universe is constant
2. Describe the reflection and refraction properties of light using simple optical devices
3. Compare the similarities and differences of the principle of the camera and the human eye
4. Explain different kinds of eyesight defects and how lenses correct these defects
5. Cite applications of properties of light
6. Given an angle of incidence and indices of refraction of two materials, illustrate the path of a light ray
incident on the boundary (Snell's Law)
7. Compare the types and properties of ionizing radiation
8. Interpret equations on nuclear reactions
9. Describe the effects of the application of nuclear radiation on living things and the environment
10. Explain the principle of radiation safety and its importance in society
11. Identify the significant contributions of Franklin, Coulomb, Volta, Ohm and other Filipino inventors/
scientists in electrical energy and related technology
12. Translate circuit diagrams
13. Determine interrelationships among current, voltage and its resistance
14. Apply Ohm's Law to series and parallel circuits
15. Relate power to voltage and current
16. Compute electrical energy consumption
17. Explain safety measures in dealing with electricity
18. Explain electromagnetic induction
19. Describe the energy transformation in electrical energy from a power station to the community
20. Describe the working principle of an electric motor
21. Explain the relationship of KE and PE to work and cite applications
22. Apply the Law of Conservation of Mechanical Energy in different situations
23. Apply Newton's Laws of Motion to land transportation
24. Explain road safety measures using the Law of Conservation of Momentum
25. Explain how the concepts of stress and strain, pressure and the Archimedes Principle apply to air
and/or sea transport
26. Describe the different regions of the electromagnetic spectrum, their properties and uses.
27. Describe how radio signals are generated, transmitted and received
28. Compare the transmission of sound through air with its transmission through solids, liquids, and a
vacuum
29. Explain how radio communication devices (e.g. cell phones, radio/TV receivers) work
30. Describes how LASER and fiber optics had improved telecommunications
31. Explain how the information superhighway has influenced the affairs of daily living