Start learning →

GCE O-Level (Singapore) Thermal Energy, Heat, and Work — practice questions

Explore 28 free Thermal Energy, Heat, and Work questions in GCE O-Level (Singapore) Physics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Thermal Energy, Heat, and Work with Quill →

Thermal Energy, Heat, and Work questions and exercises with answers

Showing questions 1–28 of 28.

What is temperature literally defined as?Read the answer and worked solution →Thermal energy is defined as which quantity belonging to a substance's particles?Read the answer and worked solution →What reference point fixes the zero of the Celsius scale?Read the answer and worked solution →At what temperature does water boil on the Fahrenheit scale?Read the answer and worked solution →A sample warms from 0.0 degrees Celsius to 40.0 degrees Celsius. What is 40.0 degrees Celsius in degrees Fahrenheit?Read the answer and worked solution →A sensor in a cold storage room reads 12.0 degrees Celsius. What is this reading in kelvins?Read the answer and worked solution →Where was the lowest temperature ever created and measured in a laboratory experiment achieved?Read the answer and worked solution →Which instrument is used to measure temperature?Read the answer and worked solution →How is an object's heat capacity C related to its mass m and specific heat c?Read the answer and worked solution →Reference specific-heat values show water's specific heat is about how many times that of glass?Read the answer and worked solution →The heat Q transferred to change a substance's temperature depends on which three factors?Read the answer and worked solution →How much heat is needed to raise the temperature of 10.0 kg of water by 1.0 degree Celsius? Use c(water) = 4186 J per kg per degree C.Read the answer and worked solution →If 3.0 kJ of heat is added to 1.0 kg of water at room temperature, what is the resulting temperature change? Use c(water) = 4186 J per kg per degree C.Read the answer and worked solution →Which group of materials is described as generally good heat conductors?Read the answer and worked solution →What physical property makes heated air rise during convection?Read the answer and worked solution →Which method of heat transfer requires no medium between the source and the object it warms?Read the answer and worked solution →Which color object is the most effective absorber and radiator of heat?Read the answer and worked solution →Which lists the phases of matter in order of increasing energy, from least to most energetic?Read the answer and worked solution →Which pair of phase changes both move a substance into a more energetic state?Read the answer and worked solution →What is the name for a direct phase change from solid to gas?Read the answer and worked solution →How much heat is needed to melt 1.000 kg of ice already at 0 degrees Celsius? Use the latent heat of fusion of water, 334 kJ/kg.Read the answer and worked solution →How much heat is needed to vaporize 1.000 kg of water already at 100 degrees Celsius? Use the latent heat of vaporization of water, 2256 kJ/kg.Read the answer and worked solution →How much energy is needed to melt 2.00 kg of ice already at 0 degrees Celsius? Use Lf(water) = 334 kJ/kg.Read the answer and worked solution →If 2500 kJ of heat is just enough to melt 3.0 kg of an unknown substance, what is that substance's latent heat of fusion?Read the answer and worked solution →How is latent heat defined?Read the answer and worked solution →In which phases of matter can the particles change position relative to their neighbours?Read the answer and worked solution →How much energy is required to melt 7.00 kg of aluminum already at its melting point? Use Lf(aluminum) = 380 kJ/kg.Read the answer and worked solution →A 3.00 kg sample at its boiling point is entirely boiled away by 5360 kJ of heat. What is this substance's latent heat of vaporization?Read the answer and worked solution →

Worked practice questions

What is temperature literally defined as?

  1. What is measured on a thermometer
  2. The total heat energy inside a body
  3. The average force between molecules
  4. The pressure of a gas at rest
Show answer and solution

Correct answer: A. What is measured on a thermometer

1. Temperature is literally defined as what is measured on a thermometer. 2. Heat is a transfer of energy due to a temperature difference, so heat energy inside a body is a distinct quantity from a temperature reading. 3. Force between molecules and gas pressure are separate mechanical quantities that a thermometer does not read. 4. So the thermometer reading is the correct definition. _Source: OpenStax Physics (CC BY 4.0), Ch 11 "Thermal Energy, Heat, and Work", section 11.1 Temperature and Thermal Energy_

Open this question →

Thermal energy is defined as which quantity belonging to a substance's particles?

  1. The total potential energy stored between them
  2. The average kinetic energy of the particles
  3. The maximum kinetic energy of one particle
  4. The total mass of the vibrating particles
Show answer and solution

Correct answer: B. The average kinetic energy of the particles

1. Thermal energy is defined as the average kinetic energy of the particles, molecules or atoms, making up a substance. 2. Potential energy between particles contributes to internal energy but is not what thermal energy measures. 3. Thermal energy is an average across all particles, not the peak kinetic energy of a single particle. 4. Particle mass on its own says nothing about motion, so it cannot define thermal energy. 5. The average kinetic energy description is therefore correct. _Source: OpenStax Physics (CC BY 4.0), Ch 11 "Thermal Energy, Heat, and Work", section 11.1 Temperature and Thermal Energy_

Open this question →

What reference point fixes the zero of the Celsius scale?

  1. The boiling point of mercury
  2. The melting point of ice cream
  3. The average human body temperature
  4. The freezing point of water
Show answer and solution

Correct answer: D. The freezing point of water

1. The Celsius scale is a relative scale built around a chosen reference point. 2. That reference point is the freezing point of water, fixed at zero degrees. 3. Mercury's boiling point and human body temperature are separate facts about temperature but neither serves as the Celsius reference point. 4. So the freezing point of water is correct. _Source: OpenStax Physics (CC BY 4.0), Ch 11 "Thermal Energy, Heat, and Work", section 11.1 Temperature and Thermal Energy_

Open this question →

How to practise

  1. Choose a Thermal Energy, Heat, and Work question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Physics topics

Thermodynamics