Temperature Flashcards
(9 cards)
What does temperature tell us?
Temperature gives us information about the direction that thermal energy will be transferred and the average energy of the particles in an object.
What happens when the temperature difference between two objects is larger?
The larger the temperature difference, the faster the thermal energy transfer
What is the difference between temperature and heat?
Temperature is not the same as heat, instead temperature is the average energy of the particles and heat is the total energy of the particles
What happens when ice cream at –20°C is placed in a room at 24°C?
Thermal energy is transferred from the air to the ice cream due to the temperature difference of 44°C
Why do two different liquids have different temperatures?
They are made of different materials with different particles, mass, and volume — so the number and type of particles differ
Why is temperature a good way to compare particle energy between objects?
It compares the average energy of particles, even if the objects are different in size or material
What does it mean when one liquid is at a higher temperature than another?
The average energy of the particles is higher in the liquid with the higher temperature
How can we compare the energy of particles in two liquids?
To fairly compare the energy in two liquids that differ in size or material, we compare the same number of particles from each. For example, 100 particles in the hotter liquid have more energy than 100 particles in the cooler one, because temperature reflects the average energy per particle, regardless of the material or volume.
If the thermal energy of two items is different, what will happen to the thermal energy of both?
Because thermal energy always transfers from a region of higher temperature to lower temperature until thermal equilibrium is reached
