PHYSICAL SYSTEMS
Quiz by Nova
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20 questions
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- Q1Which of the following is an example of a non-contact force?Magnetic forceTension forceNormal forceFrictional force30s
- Q2What is the primary source of energy for the Earth’s weather systems?Ocean currentsThe MoonThe SunVolcanic activity30s
- Q3Which physical law states that the total energy of an isolated system remains constant?Ohm's LawNewton's First LawLaw of Universal GravitationLaw of Conservation of Energy30s
- Q4What type of energy is stored in an object due to its position or configuration?Kinetic energyThermal energyChemical energyPotential energy30s
- Q5What is the unit of power in the International System of Units (SI)?JouleWattNewtonVolt30s
- Q6Which of the following demonstrates Newton's Third Law of Motion?Objects in motion stay in motion.For every action, there is an equal and opposite reaction.An object at rest stays at rest.The force equals mass times acceleration.30s
- Q7Which physical quantity describes the rate of change of velocity?MomentumAccelerationDisplacementSpeed30s
- Q8What phenomenon causes the bending of light when it passes from one medium to another?ReflectionDispersionRefractionDiffraction30s
- Q9What is the term for the energy an object possesses due to its motion?Thermal energyPotential energyKinetic energyMechanical energy30s
- Q10What is the measure of the average kinetic energy of the particles in a substance?TemperatureHeatPressureDensity30s
- Q11Which of the following best describes a physical system in physics?A philosophical idea about the universeA method for calculating financial assetsA collection of objects and their interactions within a defined boundaryAn abstract concept without real-world application30s
- Q12What is meant by the term 'closed system' in thermodynamics?A system that only exchanges matterA system that cannot exchange energy or matterA system that does not exchange matter with its surroundings but can exchange energyA system that can exchange both matter and energy30s
- Q13In mechanics, what is the primary characteristic of an elastic collision?Momentum is not conservedObjects stick together after the collisionThe total kinetic energy before and after the collision remains constantSome kinetic energy is transformed into thermal energy30s
- Q14What is the principle of conservation of momentum?Momentum is only conserved in elastic collisionsMomentum increases in all interactionsMomentum can be created or destroyed in collisionsThe total momentum of a closed system remains constant if no external forces act on it30s
- Q15What is the definition of work in physics?The total energy in a closed systemThe rate at which energy is consumedThe transfer of energy that occurs when a force acts on an object over a distanceThe energy stored in an object at rest30s