Physics Conceptual Videos Quiz

1. What is the formula for calculating kinetic energy?

• KE = 1/2 mv²
• KE = m²v
• KE = mv²
• KE = mv/2

2. What is the principle behind Archimedes` principle?

• An object sinks if its density is greater than the fluid.
• The pressure at a point in a fluid increases with depth.
• The buoyant force acting on a submerged object is equal to the weight of the fluid displaced by that object.
• Buoyancy is caused by the temperature of the fluid.

3. How do you define acceleration?

• Acceleration is defined as the rate of change of velocity over time.
• Acceleration is the total distance covered by an object.
• Acceleration is the force applied to an object divided by its mass.
• Acceleration is the constant speed of an object in motion.

4. What is the characteristic of a wave`s amplitude?

• The amplitude of a wave measures the wavelength of the wave.
• The amplitude of a wave shows the speed of wave propagation.
• The amplitude of a wave indicates its frequency of oscillation.
• The amplitude of a wave represents its maximum displacement from the rest position.

5. What does the photon model of light explain?

• The interference of light waves.
• The bending of light in a prism.
• The behavior of light as particles called photons.
• The reflection of light off surfaces.

6. What is the relationship between voltage, current, and resistance known as?

• Coulomb`s Law
• Faraday`s Law
• Kirchhoff`s Law
• Ohm`s Law

7. What is the phenomenon of electrons moving through a conductor called?

• Capacitance
• Current
• Resistance
• Voltage

8. What does the number of protons in an atom determine?

• The number of neutrons in the nucleus.
• The atomic number of an element.
• The energy levels of electrons.
• The molecular weight of a compound.

9. What is the process called when a liquid turns into vapor?

• Condensation
• Sublimation
• Solidification
• Vaporization

10. What type of wave requires a medium for propagation?

• Sound wave
• Mechanical wave
• Gravitational wave
• Electromagnetic wave

11. What is the term for the energy stored in an object`s position?

• Kinetic energy
• Potential energy
• Mechanical energy
• Thermal energy

12. How does a pendulum demonstrate the concept of simple harmonic motion?

• A pendulum demonstrates simple harmonic motion because it has a constant speed throughout its swing.
• A pendulum exhibits simple harmonic motion due to its restoring force proportional to its displacement.
• A pendulum displays simple harmonic motion as it relies on friction to return to its equilibrium position.
• A pendulum shows simple harmonic motion because it moves in a circular path without any restoring force.

13. What is the unit of measure for electric charge?

• Volt
• Ohm
• Coulomb
• Ampere

14. What does Hislaw`s principle describe in relation to fluids?

• It describes the behavior of fluids under static conditions.
• It describes the thermal conductivity of materials.
• It describes the behavior of solids under tension.
• It describes the motion of gases in a vacuum.

15. What does the term `elasticity` refer to in materials?

• The ability of a material to return to its original shape after being deformed.
• The property of a solid to remain rigid under stress.
• The ability to conduct electricity without resistance.
• The capacity of a material to absorb energy permanently.

16. How does sound travel in different mediums?

• Sound travels fastest in solids.
• Sound travels fastest in vacuums.
• Sound travels fastest in gases.
• Sound travels fastest in liquids.

17. What is the term for the energy of an object due to its motion?

• Potential energy
• Kinetic energy
• Chemical energy
• Thermal energy

18. What defines a perfect conductor in terms of electrical resistance?

• A perfect conductor has infinite electrical resistance.
• A perfect conductor has high electrical resistance.
• A perfect conductor has zero electrical resistance.
• A perfect conductor has fluctuating electrical resistance.

19. What is the effect observed when waves pass through a narrow opening?

• Diffraction
• Absorption
• Refraction
• Reflection

20. What is the photoelectric effect?

• The photoelectric effect is the reflection of light off a surface.
• The photoelectric effect is the scattering of light through a medium.
• The photoelectric effect is the emission of electrons from a material when it absorbs light of sufficient energy.
• The photoelectric effect is the absorption of heat by a material.

21. What does a trampoline demonstrate regarding potential and kinetic energy?

• A trampoline illustrates how energy is destroyed during use.
• A trampoline demonstrates the conversion between potential and kinetic energy.
• A trampoline only shows how to bounce higher without energy change.
• A trampoline proves that energy conversion is not possible.

22. How is the Doppler effect perceived in sound waves?

• The frequency of the sound remains constant regardless of movement.
• The volume of the sound increases as the source approaches.
• The pitch of the sound changes as the source moves closer or farther away.
• The sound wave stops when the source is stationary.

23. What does the term `quantum entanglement` refer to?

• Quantum entanglement refers to particles being separated by large distances with no effects on each other.
• Quantum entanglement describes the interaction between electric and magnetic fields in a vacuum.
• Quantum entanglement is a phenomenon where particles become interconnected and the state of one instantly influences the state of another, regardless of distance.
• Quantum entanglement is the process by which particles are emitted from a black hole.

24. What is the significance of Newton`s First Law of Motion?

• It states that for every action, there is an equal and opposite reaction.
• It describes the relationship between force and mass.
• It states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an external force.
• It defines the concept of energy conservation.

25. In what way does temperature affect gas pressure?

• Gas pressure increases with temperature.
• Temperature has no effect on gas pressure.
• Gas pressure remains constant regardless of temperature changes.
• Gas pressure decreases with temperature.

26. What does the term `dark matter` signify in cosmology?

• Dark matter is a visible substance made up of gas and dust in the universe.
• Dark matter is a type of energy that powers stars.
• Dark matter is a form of matter that does not emit or interact with electromagnetic radiation, making it invisible and detectable only through its gravitational effects.
• Dark matter is the light emitted by galaxies and stars.

27. What principle explains why hot air rises?

• Convection
• Reflection
• Conduction
• Radiation

28. What is the significance of the speed of light in physics?

• The speed of light is a fundamental constant that sets the maximum speed for all matter and information in the universe.
• The speed of light determines the weight of objects in motion.
• The speed of light is only relevant in quantum mechanics for particle behavior.
• The speed of light is used to measure the temperature of objects.

29. What does Ohm`s Law relate to in electric circuits?

• Only current in an electric circuit
• Only resistance in an electric circuit
• Only voltage in an electric circuit
• Voltage, current, and resistance in an electric circuit

30. What is a black body in terms of thermal radiation?

• A surface that absorbs no radiation but emits heat.
• An object that reflects all incident radiation perfectly.
• A perfect absorber and emitter of radiation at all wavelengths.
• A body that emits radiation only in the ultraviolet range.