What is the best description of thermal energy?(1 point)
Responses
Thermal energy is heat energy.
Thermal energy is heat energy.
Thermal energy is the average kinetic energy of the particles in an object or substance.
Thermal energy is the average kinetic energy of the particles in an object or substance.
Thermal energy is a type of kinetic energy.
Thermal energy is a type of kinetic energy.
Thermal energy is a type of potential energy.
Which scenario correctly illustrates heat?(1 point)
Responses
cold person gets even colder when they sit in a sauna with a temperature of 105° F
cold person gets even colder when they sit in a sauna with a temperature of 105° F
ice in a cold glass of water remains ice and never melts
ice in a cold glass of water remains ice and never melts
cold person’s hands get warmer by holding a rock that has been sitting in the sun
cold person’s hands get warmer by holding a rock that has been sitting in the sun
bathtub full of hot water gets even warmer in a cold room
What happens when two substances with different temperatures come into contact?(1 point)
Responses
Potential energy is transferred from the warmer substance to the cooler substance.
Potential energy is transferred from the warmer substance to the cooler substance.
Both substances gain thermal energy.
Both substances gain thermal energy.
Thermal energy is transferred from the warmer substance to the cooler substance.
Thermal energy is transferred from the warmer substance to the cooler substance.
Thermal energy is transferred from the cooler substance to the warmer substance.
Why do restaurants wash their dishes with hot water?(1 point)
Responses
The molecules of hot water have less kinetic energy than cold water, so they are easier to control during dishwashing.
The molecules of hot water have less kinetic energy than cold water, so they are easier to control during dishwashing.
The molecules of hot water have more kinetic energy than the molecules of cold water, so they will more easily break up grease and leftover food.
The molecules of hot water have more kinetic energy than the molecules of cold water, so they will more easily break up grease and leftover food.
Hot water is cheaper than cold water.
Hot water is cheaper than cold water.
Hot water has more potential energy than cold water so it is more effective at removing grease and food scraps.
Which is the best example of a thermal conductor?(1 point)
Responses
plastic ice-cube tray
plastic ice-cube tray
copper plating on bottom of a skillet
copper plating on bottom of a skillet
ceramic stovetop
ceramic stovetop
down jacket
The copper plating on the bottom of a skillet is the best example of a thermal conductor, as it allows heat to be transferred efficiently from the stovetop to the food being cooked.
down jacket
copper plating on bottom of a skillet
The best description of thermal energy is: "Thermal energy is the average kinetic energy of the particles in an object or substance."
The scenario that correctly illustrates heat is: "cold person’s hands get warmer by holding a rock that has been sitting in the sun."
When two substances with different temperatures come into contact, thermal energy is transferred from the warmer substance to the cooler substance.
Restaurants wash their dishes with hot water because "the molecules of hot water have more kinetic energy than the molecules of cold water, so they will more easily break up grease and leftover food."
The best example of a thermal conductor is "copper plating on the bottom of a skillet."