Physics Quiz On Heat And Temperature!
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When a material is heated:
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The molecules lose kinetic energy
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The molecules in the substance will be grouped more closely
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The internal energy can be calculated from the change in temperature
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The total internal energy of the substance will be increased
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Heat and Temperature are interlinked but both are distinct concepts. When you heat anything, temperature rises or lower down according to the environment. Heat is the absolute energy while the temperature is the measurement. This quiz has been created to test and enhance your knowledge about Heat and Temperature. So, let's try out the quiz. All the best!
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- 2.
A hot water tap delivers water at 80 degree Celsius. Ten liters of hot water is added to a pail containing 30 liters of water at 20 degree Celsius. Ignoring energy losses to the surrounding environment, what will be the final temperature of the water int he pail?
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25 degree Celcius
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30 degree Celcius
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35 degree Celcius
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40 degree Celcius
Correct Answer
A. 35 degree CelciusExplanation
When hot water is added to the pail containing water at a lower temperature, heat is transferred from the hot water to the cooler water. The amount of heat transferred can be calculated using the equation Q = mcΔT, where Q is the heat transferred, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature. Since the specific heat capacity of water is constant, the heat transferred is directly proportional to the change in temperature. In this case, 10 liters of hot water at 80 degrees Celsius is added to 30 liters of water at 20 degrees Celsius. The total mass of the water is 40 liters, and the change in temperature is 80 - 20 = 60 degrees Celsius. Therefore, the final temperature of the water in the pail will be (60/40) * 10 + 20 = 35 degrees Celsius.Rate this question:
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- 3.
Which of the following is NOT a fundamental force of nature?
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Gravitational force
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Electromagnetic force
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Strong nuclear force
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Centrifugal force
Correct Answer
A. Centrifugal forceExplanation
Centrifugal force is an apparent outward force that acts on a body moving in a circular path. It is not a fundamental force of nature but rather a result of inertia, the tendency of an object to resist changes in its motion. The other options, gravitational force, electromagnetic force, and strong nuclear force, are fundamental forces that govern the interactions between particles and the structure of matter.Rate this question:
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- 4.
A balloon is filled with helium gas to a volume of 30 litres at 1.0 atm pressure. The balloon is released and rises to an altitude where its volume expands to 180 litres. Calculate the pressure being exerted on the balloon at thins altitude.
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0.15 atm
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0.16 atm
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0.17 atm
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0.18 atm
Correct Answer
A. 0.17 atmExplanation
Use Boyle's Law.Rate this question:
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- 5.
A fixed volume of gas has a pressure of 0.85 atm at 20 degree Celcius. The gas is heated to 85 degree Celcius. What is the new pressure?
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0.5 atm
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1.0 atm
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1.5 atm
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2.0 atm
Correct Answer
A. 1.0 atmExplanation
Use Gay-Lussac's Law or simply the Pressure Law.Rate this question:
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- 6.
A sample of air at room temperature has a volume of 90.0 mL at 95.0 kPa pressure. If the air remains at room temperature, what volume will it occupy if the pressure is changed to 40.0 kPa?
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212.00 mL
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212.75 mL
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213.50 mL
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213.75 mL
Correct Answer
A. 213.75 mLExplanation
Use Boyle's Law.Rate this question:
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- 7.
At 1 atm pressure and 25 degree Celcius, a gas-filled balloon has a volume of 20.0 L. The balloon is cooled down to -5 degree Celcius. What would be the volume of the balloon now, assuming pressure remains constant?
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17.00 L
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17.49 L
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17.79 L
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17.99 L
Correct Answer
A. 17.99 LExplanation
Use Gay-Lussac's Law or simply the Pressure Law.Rate this question:
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- 8.
What is it called when heat transfers from one object to another?
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Induction
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Expansion
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Equilibrium
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Deduction
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Conduction
Correct Answer
A. ConductionExplanation
Conduction is the correct answer because it refers to the process of heat transfer between objects that are in direct contact with each other. In conduction, heat energy is transferred through the collision of particles within the objects, causing the hotter object to transfer heat to the cooler object until they reach thermal equilibrium.Rate this question:
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- 9.
What happens to the molecules of a substance as it gets cooler?
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The molecules shrink
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The molecules expand
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The molecules move faster
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The molecules move slower
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Nothing
Correct Answer
A. The molecules move slowerExplanation
As a substance gets cooler, the kinetic energy of its molecules decreases. This causes the molecules to move slower. When the molecules move slower, they have less energy to overcome intermolecular forces, which results in a decrease in the overall movement and vibration of the molecules. Therefore, the correct answer is that the molecules move slower as the substance gets cooler.Rate this question:
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- 10.
Which of the following is responsible for bringing heat to our planet?
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Convection
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Conduction
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Radiation
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Induction
Correct Answer
A. RadiationExplanation
Radiation is responsible for bringing heat to our planet. Radiation is the transfer of energy through electromagnetic waves, such as heat from the Sun reaching the Earth. Unlike conduction and convection, which require a medium to transfer heat, radiation can occur through empty space. Therefore, radiation is the primary mechanism by which heat is transferred from the Sun to the Earth, making it responsible for bringing heat to our planet.Rate this question:
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Current Version
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Mar 25, 2025Quiz Edited by
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Feb 28, 2008Quiz Created by
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