Heat Transfer And Temperature Quiz Questions
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Questions and Answers
- 1.
Rising warm air currents is an example of
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
C. ConvectionExplanation
Convection is the transfer of heat through the movement of fluid or gas. Rising warm air currents are a perfect example of convection because as warm air rises, it creates a convection current where the warm air moves upwards and the cooler air moves downwards. This process helps in the transfer of heat from one place to another.Rate this question:
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- 2.
A thermometer works because the liquid in it contracts when heated this is an example of
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
C. ConvectionExplanation
A thermometer works by measuring the expansion or contraction of a liquid, typically mercury or alcohol, in response to temperature changes. When the liquid is heated, it expands and rises up the narrow tube of the thermometer. This movement is an example of convection, as it involves the transfer of heat through the movement of a fluid. Convection occurs when warmer, less dense fluid rises and cooler, denser fluid sinks. In the case of a thermometer, the heated liquid rises due to its decreased density, indicating a higher temperature. Therefore, the correct answer is convection.Rate this question:
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- 3.
True or False higher temperature means faster moving molecules
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Higher temperature means that the average kinetic energy of the molecules in a substance is increased. This increase in kinetic energy leads to faster movement of the molecules. Therefore, it is true that higher temperature results in faster moving molecules.Rate this question:
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- 4.
The reason why water boils causing the circular motion is due to?
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
C. ConvectionExplanation
Convection is the correct answer because when water is heated, the molecules near the heat source gain energy and become less dense, causing them to rise. As they rise, they carry heat energy with them and transfer it to the surrounding water. This creates a circular motion as the cooler water sinks and the warmer water rises, resulting in the boiling of water. Radiation and conduction are not relevant in this context as they do not explain the circular motion caused by boiling water.Rate this question:
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- 5.
When you get into a car with hot black leather in the middle of the summer and you get your buns toasted, this is an example of?
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
B. ConductionExplanation
Conduction is the transfer of heat through direct contact between two objects or substances. In this scenario, the hot black leather of the car seats directly transfers heat to the person's buns when they sit on it. This is an example of conduction because the heat is being transferred through direct contact between the person's body and the hot leather surface.Rate this question:
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- 6.
When rocks are heated by the warmth of the sun this is an example of?
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
A. RadiationExplanation
When rocks are heated by the warmth of the sun, it is an example of radiation. Radiation is the transfer of heat energy through electromagnetic waves, such as sunlight. In this case, the rocks are absorbing the heat energy from the sun's rays, which is a form of radiation.Rate this question:
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- 7.
When a metal spoon with a temperature of 20oC is placed into a cup of water with a temperature of 90oC the spoon will heat up. This is an example of:
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
B. ConductionExplanation
When a metal spoon is placed in a cup of hot water, the heat is transferred from the water to the spoon through direct contact. This process is known as conduction. The particles in the hot water collide with the particles in the spoon, transferring their energy and increasing the temperature of the spoon. This is different from radiation, which involves the transfer of heat through electromagnetic waves, and convection, which involves the transfer of heat through the movement of fluids.Rate this question:
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- 8.
During a house fire, the smoke and flames rise up, but the air down near the floor is cooler and less smoky. This is an example of
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
C. ConvectionExplanation
During a house fire, convection occurs when the hot air rises and carries the smoke and flames upward. As the hot air rises, cooler air from the floor is drawn in to replace it. This creates a convection current, with the cooler air near the floor being less smoky and cooler compared to the hot air near the ceiling. Therefore, the given scenario of smoke and flames rising up while the air near the floor is cooler and less smoky is an example of convection.Rate this question:
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- 9.
this type of heat transfer occurs when heat moves from one molecule to another.
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
B. ConductionExplanation
Conduction is the correct answer because it refers to the transfer of heat from one molecule to another. In conduction, heat is transferred through direct contact between molecules or objects. This process occurs when there is a temperature difference between the molecules, causing the hotter molecules to transfer their energy to the cooler ones. Unlike convection and radiation, which involve the transfer of heat through a medium or through electromagnetic waves, conduction relies on direct contact for heat transfer.Rate this question:
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- 10.
When heat is given off by light this type of heat is known as?
- A.
Radiation
- B.
Conduction
- C.
Convection
Correct Answer
A. RadiationExplanation
When heat is given off by light, it is known as radiation. Radiation is the transfer of heat energy through electromagnetic waves, such as infrared radiation. This type of heat transfer does not require any medium or direct contact between objects. Instead, heat is emitted in the form of electromagnetic waves and can travel through empty space.Rate this question:
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- 11.
The transfer of heat between substances that are in direct contact with each other is called what?
- A.
Radiation
- B.
Convection
- C.
Conduction
- D.
Heat Transfer
Correct Answer
C. ConductionExplanation
Conduction is the correct answer because it refers to the transfer of heat between substances that are in direct contact with each other. Unlike convection, which involves the transfer of heat through the movement of fluids, or radiation, which involves the transfer of heat through electromagnetic waves, conduction specifically pertains to the direct transfer of heat energy from one substance to another through physical contact. Therefore, conduction is the most appropriate term to describe the transfer of heat between substances in direct contact.Rate this question:
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- 12.
The air in the hot air balloon is heated and circulates. This is an example of ...
- A.
Conduction
- B.
Convection
- C.
Radiation
Correct Answer
B. ConvectionExplanation
The air in the hot air balloon is heated, causing it to become less dense and rise. As the hot air rises, cooler air from the surroundings moves in to take its place, creating a continuous circulation of air. This process of heat transfer through the movement of a fluid, in this case air, is known as convection.Rate this question:
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- 13.
You walk barefoot on the hot street and it burns your toes. This is an example of...
- A.
Conduction
- B.
Convection
- C.
Radiation
Correct Answer
A. ConductionExplanation
The scenario described in the question involves direct contact between the hot street and the bare feet, which leads to the transfer of heat energy from the street to the toes. This process of heat transfer through direct contact is known as conduction.Rate this question:
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- 14.
A boy sits to the side of a campfire. He is 10 feet away, but still feels warm. This is an example of ...
- A.
Conduction
- B.
Convection
- C.
Radiation
Correct Answer
C. RadiationExplanation
The boy sitting next to the campfire feeling warm even though he is 10 feet away is an example of radiation. Radiation is the transfer of heat through electromagnetic waves, such as infrared radiation. In this case, the campfire emits heat in the form of radiation, which travels through the air and reaches the boy, making him feel warm. Conduction and convection, on the other hand, involve the transfer of heat through direct contact or movement of a fluid, respectively, which are not applicable in this scenario.Rate this question:
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- 15.
The transfer of energy in fluids or gases
- A.
Conduction
- B.
Convection
- C.
Radiation
Correct Answer
B. ConvectionExplanation
Convection is the transfer of energy in fluids or gases through the movement of the particles within the substance. This transfer occurs when hot particles rise and cold particles sink, creating a circular motion. As the hot particles rise, they carry energy with them, while the cold particles take their place and absorb the energy. This process allows for the transfer of heat from one location to another.Rate this question:
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- 16.
Light waves traveling through empty space
- A.
Conduction
- B.
Convection
- C.
Radiation
Correct Answer
C. RadiationExplanation
Light waves traveling through empty space is an example of radiation. Radiation refers to the transfer of energy through electromagnetic waves, such as light waves, without the need for a medium. In this case, the light waves can travel through the vacuum of empty space without the need for any particles or matter to carry them. This is in contrast to conduction and convection, which require a medium such as a solid or a fluid to transfer energy.Rate this question:
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- 17.
True or FalseThe sun DIRECTLY heats the air in our atmosphere
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The sun does not directly heat the air in our atmosphere. Instead, it heats the Earth's surface, which in turn warms the air through a process called conduction. The warmed air then rises and circulates, creating weather patterns and redistributing heat throughout the atmosphere. Therefore, the statement that the sun directly heats the air in our atmosphere is false.Rate this question:
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- 18.
True or falseAir is a great conductor of heat
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Air is not a great conductor of heat because it is a poor conductor of electricity and heat. Unlike metals, air is a poor conductor because its particles are far apart and do not have a strong interaction with each other. This means that heat does not transfer easily through air, making it a good insulator rather than a conductor.Rate this question:
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- 19.
The rays in this picture is an example of
- A.
Conduction
- B.
Convection
- C.
Radiation
Correct Answer
C. RadiationExplanation
The rays in the picture are an example of radiation. Radiation is the transfer of heat through electromagnetic waves, such as infrared radiation or visible light. In this case, the rays in the picture are likely representing heat energy being emitted from a source and traveling through space. Conduction and convection, on the other hand, involve the transfer of heat through direct contact or the movement of fluids, respectively.Rate this question:
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- 20.
Heat is the transfer of ______________ from one object to another
Correct Answer
thermal energyExplanation
Heat is the transfer of thermal energy from one object to another. Thermal energy refers to the total kinetic energy of the particles in an object. When heat is transferred, it flows from an object with a higher temperature to an object with a lower temperature. This transfer can occur through conduction, convection, or radiation.Rate this question:
- 21.
True or FalseWhen in thermal contact, heat always moves from Cold to Hot
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
When in thermal contact, heat does not always move from cold to hot. According to the second law of thermodynamics, heat naturally flows from an object with a higher temperature to an object with a lower temperature. This is because heat transfer occurs due to the difference in temperature between two objects. Therefore, the correct answer is false.Rate this question:
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- 22.
Which items are good conductors
- A.
Gold
- B.
Air
- C.
Silver
- D.
Glass
- E.
Copper
- F.
Wool
Correct Answer(s)
A. Gold
C. Silver
E. CopperExplanation
Gold, silver, and copper are good conductors of electricity because they have a high number of free electrons in their atomic structure. These free electrons are able to move easily through the material, allowing for the flow of electric current. On the other hand, air, glass, and wool are poor conductors or insulators. They have fewer free electrons and do not allow for the efficient flow of electricity.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Feb 25, 2015Quiz Created by
Kgoodman
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