Nature of universe and general scientific laws. - Question Bank
1. The cosmological principle suggests that on large scales, the universe is:
2. What is the SI unit of luminous intensity?
3. The process by which a solid directly changes into a gas without passing through the liquid state is called:
4. Which fundamental force is responsible for radioactive decay?
5. What is the term for the point in an orbit where a celestial body is closest to the body it orbits?
6. The concept of spacetime curvature, where mass and energy warp the fabric of spacetime, is central to:
7. What is the SI unit of temperature?
8. Which scientific law states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers?
9. The phenomenon where light waves spread out as they pass through a narrow opening is called:
10. What is the SI unit of electric charge?
11. The principle of superposition in wave mechanics states that:
12. What is the approximate age of the universe according to current cosmological models?
13. Which of the following is an example of electromagnetic radiation?
14. The expansion of space itself, as described by general relativity, is responsible for:
15. What is the SI unit of magnetic field strength?
16. Which law of thermodynamics relates to the concept of entropy and states that in any natural process, the total entropy of an isolated system tends to increase?
17. The phenomenon of light splitting into its constituent colors when passed through a prism is called:
18. What is the SI unit of frequency?
19. Which scientific principle explains why an object floats or sinks in a fluid?
20. What is the process called when a liquid changes into a gas?
21. The concept of quantum mechanics primarily deals with the behavior of matter and energy at what level?
22. What is the SI unit of power?
23. Which of the following is a fundamental interaction in nature?
24. What is the term for the tendency of an object to resist changes in its state of motion?
25. Which scientific law states that energy cannot be created or destroyed, only converted from one form to another?
26. What does the Doppler effect explain regarding light from distant stars moving away from us?
27. The force that keeps an object moving in a circular path is called:
28. According to Ohm's Law, the current through a conductor is directly proportional to the voltage across it, provided that:
29. What is the SI unit of electrical resistance?
30. The Big Bang theory describes the:
31. What is the force that opposes motion between two surfaces in contact?
32. The concept of wave-particle duality suggests that:
33. Which fundamental law of physics deals with the relationship between heat, work, and internal energy?
34. What is the SI unit of pressure?
35. The apparent slowing down of time for an observer moving at a high speed relative to another observer is a consequence of:
36. What is the process by which plants convert light energy into chemical energy?
37. The theory of relativity, which describes gravity as a curvature of spacetime, was developed by:
38. What is the SI unit of energy?
39. The law of conservation of momentum states that in the absence of an external force, the total momentum of a system:
40. Which of the following is a fundamental particle according to the Standard Model of particle physics?
41. What is the primary characteristic of a black hole?
42. The expansion of the universe is supported by the observation of:
43. What is the SI unit of force?
44. Which law of thermodynamics states that the total energy of an isolated system remains constant?
45. The phenomenon where light bounces off a surface is known as:
46. What is the unit of electric current?
47. Which scientific law states that for every action, there is an equal and opposite reaction?
48. The bending of light as it passes from one medium to another is called:
49. What is the primary source of energy for the Sun and other stars?
50. According to Newton's first law of motion, an object at rest will remain at rest, and an object in motion will continue in motion with constant velocity, unless acted upon by a(n):