GCSE Physics: Energy, Heating, COnduction TestLife 11+ online Physics Quizzes Quiz 1 Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 1 / 15 What is the role of an insulator in heat transfer? Speeds up heat transfer Conducts heat poorly Conducts heat well Transfers energy efficiently An insulator is a material that resists the flow of heat and conducts it poorly, making it useful for preventing heat transfer. 2 / 15 Which of the following best describes the process of conduction? Heat transfer through a vacuum Heat transfer by radiation from a hot object Heat transfer through the movement of fluid Heat transfer through direct contact between particles Conduction is the transfer of heat through direct contact between particles, commonly occurring in solids. 3 / 15 Why does heat move from hot to cold? Heat seeks to reach equilibrium Cold particles have more energy Cold objects attract heat Hot particles lose energy as they cool Heat moves from hot to cold because particles with higher energy transfer energy to those with lower energy, seeking equilibrium. 4 / 15 Which material would be considered the best thermal conductor? Glass Copper Plastic Wood Materials like copper are good thermal conductors because they allow heat to pass through them efficiently. 5 / 15 What happens to particles in a solid as they are heated? They slow down They stop moving They vibrate faster They move apart When heated, particles in a solid gain energy and vibrate more vigorously, increasing the rate of heat transfer. 6 / 15 What is the formula for calculating energy transferred in heating? E = mgh E = mcΔT E = mv² E = mc² The formula ( E = mcDelta T ) calculates the energy transferred during a change in temperature, considering mass, specific heat capacity, and temperature change. 7 / 15 Which of the following would be a good insulator? Rubber Copper Glass Aluminium foil Good insulators, like rubber, prevent the transfer of heat due to their low thermal conductivity. 8 / 15 When does the peak intensity of radiation shift towards shorter wavelengths? When the object's temperature decreases When the object's mass increases When the object cools to room temperature When the object's temperature increases As an object’s temperature increases, the peak wavelength of emitted radiation shifts toward shorter wavelengths, meaning higher frequencies. 9 / 15 What is meant by a “perfect black body”? It absorbs some radiation and transmits some It absorbs all radiation and reflects none It reflects all radiation and absorbs none It transmits all radiation without absorbing A “perfect black body” is an ideal object that absorbs all incoming radiation without reflecting or transmitting any. 10 / 15 Why is loft insulation effective in homes? It allows heat to pass through easily reducing heat loss It prevents moisture from entering It traps air It blocks sound waves Loft insulation is effective because it traps air, which reduces heat loss by conduction and convection. 11 / 15 If a 30 W heater runs for 5 minutes, how much energy does it provide? 150 J 300 J 9000 J 1500 J A 30 W heater provides energy based on power and time, calculated using ( text{Energy} = text{Power} times text{Time} ). 12 / 15 What happens to the temperature rise if the same heat energy is applied to a block of double the mass? It will increase four times It will remain the same It will double It will halve If heat energy is applied to a mass that is doubled, the temperature rise will decrease because the same energy is distributed over a larger mass. 13 / 15 Which method of heat transfer occurs in gases and liquids but not in solids? Convection Reflection Radiation Conduction Convection is a method of heat transfer that occurs in fluids (liquids and gases) through the movement of particles, not possible in solids. 14 / 15 What does thermal conductivity indicate? How well a material conducts heat The material's ability to emit radiation The mass of a material The rate of light transmission through a material Thermal conductivity measures how well a material conducts heat; materials with higher conductivity transfer heat more effectively. 15 / 15 When viewed through an infrared camera, which parts of a house would appear blue? Well-insulated parts Wooden surfaces Metal surfaces Poorly insulated parts Infrared cameras detect heat; well-insulated parts appear cooler (blue) because they lose less heat, while poorly insulated areas appear warmer. Your score is Quiz2 Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 1 / 10 Which materials would be effective for making a thermal flask? Cotton filling inside the flask Glass with a vacuum between layers Plastic outer shell Stainless steel inner lining Check Thermal flasks are effective when made with materials like stainless steel, plastic, and glass with a vacuum between layers, which help to minimize heat transfer. 2 / 10 Which statements about specific heat capacity are correct? Metals typically have low specific heat capacities Water has a low specific heat capacity Substances with high specific heat capacities heat up slowly It is the energy required to raise 1 kg of a substance by 1°C Check Specific heat capacity measures the energy needed to raise the temperature of 1 kg of a substance by 1°C. Substances with high specific heat capacity heat up slowly, while metals generally have low specific heat capacities. 3 / 10 Which factors would decrease the amount of heat loss in a house? Using materials with lower thermal conductivity Increasing the number of windows Increasing the thickness of insulation Painting the walls a light color Check Decreasing heat loss in a house can be achieved by using thicker insulation materials and those with lower thermal conductivity, which slow the transfer of heat. 4 / 10 Which are properties of a perfect black body? Reflects all incoming radiation Transmits all incoming radiation Absorbs all incoming radiation Emits the maximum possible amount of radiation Check A perfect black body absorbs all incoming radiation without reflecting or transmitting any. It also emits the maximum amount of radiation possible. 5 / 10 Which of the following methods can be used to reduce heat loss from a building? Installing a radiator Double glazing windows Loft insulation Using a heater with a higher power rating Reducing heat loss in buildings can be achieved through double glazing, loft insulation, and other methods that trap air or reduce thermal conductivity. 6 / 10 Which of these changes occur when an object is heated? Energy is transferred to the surroundings Particles move closer together Particles move faster Particles expand Check When an object is heated, its particles gain energy, move faster, and may expand.The energy is also transferred to the surroundings, raising the temperature. 7 / 10 Which conditions increase the rate of infrared radiation emission from a surface? Higher temperature Darker surface Shiny surface Larger surface area Check The rate of infrared radiation increases with higher temperatures, darker surfaces (which absorb and emit more heat), and larger surface areas (which emit more radiation). 8 / 10 Which of the following materials are considered insulators? Plastic Silver Glass Wood Check Insulating materials, such as glass, wood, and plastic, do not conduct heat well and help to reduce heat loss. 9 / 10 Which factors affect the rate of heat transfer by conduction? Color of the material Thermal conductivity of the material Thickness of the material Density of the material Check The rate of heat transfer by conduction is affected by factors like the thickness of the material, its thermal conductivity, and density. Thicker materials and those with lower conductivity slow down heat transfer. 10 / 10 Which of the following are good conductors of heat? Rubber Aluminium Plastic Copper Check Good conductors of heat, like copper and aluminium, allow heat to pass through them easily due to their high thermal conductivity. Your score is
