Matter and Temperature Quick Check
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Question
A blacksmith strikes a piece of metal with a hammer repeatedly. The metal slowly begins to glow as the temperature increases, and the metal becomes more malleable. Which changes on a microscopic level led to the visible changes in the properties of the metal? (1 point)
Responses
The individual temperature of the particles increased.
The individual temperature of the particles increased.
The potential energy of the particles decreased.
The potential energy of the particles decreased.
The kinetic energy of the particles decreased.
The kinetic energy of the particles decreased.
The average speed of the particles increased.
The average speed of the particles increased.
Which statement best describes heat?(1 point)
Responses
Heat flows from cold to hot and is a form of thermal energy.
Heat flows from cold to hot and is a form of thermal energy.
Heat flows from hot to cold and is the transfer of thermal energy.
Heat flows from hot to cold and is the transfer of thermal energy.
Heat flows from cold to hot and is the transfer of thermal energy.
Heat flows from cold to hot and is the transfer of thermal energy.
Heat flows from hot to cold and is a form of thermal energy.
Heat flows from hot to cold and is the transfer of thermal energy.
What is thermal energy?(1 point)
Responses
the total kinetic energy of all particles in a substance
the total kinetic energy of all particles in a substance
the distance between particles and their freedom to move around
the distance between particles and their freedom to move around
a material that is a conductor of heat
a material that is a conductor of heat
the measurement of energy in an object due to position, conduction, or chemical composition
the measurement of energy in an object due to position, conduction, or chemical composition
the measurement of energy in an object due to position, conduction, or chemical composition
The correct answer is: The individual temperature of the particles increased.
The correct answer is: The average speed of the particles increased.
When the blacksmith strikes the metal with a hammer, it imparts kinetic energy to the metal. This energy is transferred to the metal's particles, causing them to move faster and collide more frequently. As a result, the average speed of the particles increases.
As the particles move faster and collide, they generate more heat. This increase in temperature leads to the metal slowly beginning to glow and becoming more malleable. The increase in average speed of the particles is what causes these visible changes in the properties of the metal.
To arrive at this answer, we need to understand that temperature is a measure of the average kinetic energy of the particles in a substance. When heat energy is transferred to a substance, the particles move faster, which increases their kinetic energy and raises the temperature.
Therefore, by analyzing the given options, we can deduce that the correct answer is that the average speed of the particles increased.