Energy II Lowersixth Science Physics

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Test your understanding of energy and its transformations.

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Energy II Lowersixth Science Physics


Energy II Lowersixth Science PhysicsVersion en ligne Test your understanding of energy and its transformations. par YAKILI LMS 1 A stretched spring stores potential energy and can transfer it to kinetic energy when released. Yes No 2 The amount of energy in a closed system is measured in joules and remains the same total value. Yes No 3 A closed system's total energy can spontaneously double without any work input. Yes No 4 Mass is always conserved independently of energy transformations in all processes. Yes No 5 A meteor entering the atmosphere gains energy as its speed decreases. Yes No 6 Energy can be transformed from one form to another without creating or destroying it. Yes No 7 All forms of energy are equally easy to convert back and forth without losses. Yes No 8 In nuclear fission, a small amount of mass is converted into a large amount of energy. Yes No 9 Heat produced by friction is still energy; it comes from the object's initial mechanical energy. Yes No 10 In an isolated system, total energy remains constant over time. Yes No 11 In a closed system without external work, the sum of kinetic and potential energy is conserved. Yes No 12 Kinetic energy can exist without any motion of the object. Yes No 13 A spinning bicycle wheel demonstrates that angular momentum can increase without external torque. Yes No 14 The law of conservation of energy applies to all physical processes when non-conservative forces are negligible. Yes No 15 The mass-energy equivalence implies that energy and mass are completely independent quantities. Yes No 16 Energy cannot be converted from kinetic to potential energy. Yes No 17 Non-conservative forces do not affect energy conservation in any system. Yes No 18 Mass can be converted into energy and energy into mass as described by E=mc^2. Yes No 19 Energy stored in a compressed spring cannot be transferred to another object. Yes No 20 The total energy of a satellite in orbit remains constant if only conservative gravitational forces act. Yes No 21 A swinging pendulum demonstrates energy transfer between kinetic and potential forms. Yes No 22 Heat is not a form of energy and cannot be accounted for in energy conservation. Yes No 23 In a closed system, momentum changes but energy is never conserved. Yes No 24 The work-energy theorem states that kinetic energy is always zero after any collision. Yes No 25 In a gravitational field, potential energy is always negative and never becomes positive. Yes No 26 The work-energy theorem states that the work done on an object equals its change in kinetic energy. Yes No 27 The energy of a falling object is converted from potential energy to kinetic energy. Yes No 28 In a vacuum, a thrown ball has zero kinetic energy at the moment it is released. Yes No 29 The gravitational potential energy of a system is always zero at the surface of the Earth. Yes No 30 In a perfectly inelastic collision, all kinetic energy is recovered as heat. Yes No 31 The energy of a photon is independent of its frequency or wavelength. Yes No 32 A battery creates energy from nothing when connected to a circuit. Yes No 33 The total mechanical energy of a system can increase without any external input of energy. Yes No 34 In a frictionless pendulum, mechanical energy (kinetic plus potential) is constant. Yes No 35 Energy is never created from nothing and never destroyed, but this statement is false in quantum fields. Yes No 36 In any real system, energy cannot be transferred as light energy. Yes No 37 A ball dropped from a height converts potential energy to kinetic energy until impact. Yes No 38 The law of conservation of energy only applies to mechanical energy, not other forms. Yes No 39 Energy can only exist in the form of kinetic energy; potential energy is not real. Yes No 40 E = mc^2 means energy decreases as mass increases, all else equal. Yes No 41 In real systems, energy is conserved when all forms, including thermal energy, are accounted for. Yes No 42 Energy can be transformed from potential to kinetic without changing the total energy. Yes No 43 A pendulum in air, with air resistance, has a constant total mechanical energy at all times. Yes No 44 Work done by gravity on a horizontal projectile is always positive. Yes No 45 A frictionless block sliding down an incline converts all potential energy into heat energy. Yes No 46 The Einstein relation E=mc^2 applies only at high speeds close to the speed of light. Yes No 47 In all energy transfers, kinetic energy is always the only form that changes; potential energy never changes. Yes No 48 The law of conservation of energy states that energy cannot be created or destroyed, only transformed. Yes No 49 Einstein's mass-energy relation is E = mc^2, showing mass can be converted into energy. Yes No 50 According to the work-energy theorem, the work done on an object equals the object's change in kinetic energy. Yes No

Energy II Lowersixth Science Physics

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Energy II Lowersixth Science PhysicsVersion en ligne

par YAKILI LMS

A stretched spring stores potential energy and can transfer it to kinetic energy when released.

The amount of energy in a closed system is measured in joules and remains the same total value.

A closed system's total energy can spontaneously double without any work input.

Mass is always conserved independently of energy transformations in all processes.

A meteor entering the atmosphere gains energy as its speed decreases.

Energy can be transformed from one form to another without creating or destroying it.

All forms of energy are equally easy to convert back and forth without losses.

In nuclear fission, a small amount of mass is converted into a large amount of energy.

Heat produced by friction is still energy; it comes from the object's initial mechanical energy.

In an isolated system, total energy remains constant over time.

In a closed system without external work, the sum of kinetic and potential energy is conserved.

Kinetic energy can exist without any motion of the object.

A spinning bicycle wheel demonstrates that angular momentum can increase without external torque.

The law of conservation of energy applies to all physical processes when non-conservative forces are negligible.

The mass-energy equivalence implies that energy and mass are completely independent quantities.

Energy cannot be converted from kinetic to potential energy.

Non-conservative forces do not affect energy conservation in any system.

Mass can be converted into energy and energy into mass as described by E=mc^2.

Energy stored in a compressed spring cannot be transferred to another object.

The total energy of a satellite in orbit remains constant if only conservative gravitational forces act.

A swinging pendulum demonstrates energy transfer between kinetic and potential forms.

Heat is not a form of energy and cannot be accounted for in energy conservation.

In a closed system, momentum changes but energy is never conserved.

The work-energy theorem states that kinetic energy is always zero after any collision.

In a gravitational field, potential energy is always negative and never becomes positive.

The work-energy theorem states that the work done on an object equals its change in kinetic energy.

The energy of a falling object is converted from potential energy to kinetic energy.

In a vacuum, a thrown ball has zero kinetic energy at the moment it is released.

The gravitational potential energy of a system is always zero at the surface of the Earth.

In a perfectly inelastic collision, all kinetic energy is recovered as heat.

The energy of a photon is independent of its frequency or wavelength.

A battery creates energy from nothing when connected to a circuit.

The total mechanical energy of a system can increase without any external input of energy.

In a frictionless pendulum, mechanical energy (kinetic plus potential) is constant.

Energy is never created from nothing and never destroyed, but this statement is false in quantum fields.

In any real system, energy cannot be transferred as light energy.

A ball dropped from a height converts potential energy to kinetic energy until impact.

The law of conservation of energy only applies to mechanical energy, not other forms.

Energy can only exist in the form of kinetic energy; potential energy is not real.

E = mc^2 means energy decreases as mass increases, all else equal.

In real systems, energy is conserved when all forms, including thermal energy, are accounted for.

Energy can be transformed from potential to kinetic without changing the total energy.

A pendulum in air, with air resistance, has a constant total mechanical energy at all times.

Work done by gravity on a horizontal projectile is always positive.

A frictionless block sliding down an incline converts all potential energy into heat energy.

The Einstein relation E=mc^2 applies only at high speeds close to the speed of light.

In all energy transfers, kinetic energy is always the only form that changes; potential energy never changes.

The law of conservation of energy states that energy cannot be created or destroyed, only transformed.

Einstein's mass-energy relation is E = mc^2, showing mass can be converted into energy.

According to the work-energy theorem, the work done on an object equals the object's change in kinetic energy.