Untitled Deck Flashcards
(20 cards)
What is the total energy of all particles in an object?
Thermal energy
What is energy transferred from one object to another called?
Heat
What happens to temperature when the kinetic energy of particles increases?
Temperature increases
What instrument can be used to measure temperature?
Thermometer
How does larger mass affect heating time?
Larger mass = longer time to heat up
How does heat transfer from one particle to another, by direct contract
conduction
What happens to energy when it goes from one object to another?
Energy is conserved
How does air current transfer energy?
By convection
What are materials that don’t conduct heat well called?
Insulators (e.g., wool)
What are materials that conduct heat well called?
Conductors (e.g., metals)
What is the amount of energy per 1kg needed to increase the temperature of a material by 1 K?
Specific heat
What is the formula to convert Kelvin to Celsius?
C - 273 = x
If C = 297, what is the result of 297 - 273?
24
What is the specific heat equation?
Q = Mass x Specific Heat x Change in Temp
How much heat is needed to raise the temperature of 100g of water by 85C if the specific heat of water is 4.18 (g)?
35530
Calculation: 100 x 85 x 4.18 = 35530
What happens to particles when they decrease in temperature?
Objects contract
What do conduction and convection require?
A medium
What is thermal energy also called?
Internal energy
What determines thermal energy?
Temperature and amount of matter
Why does sand feel hotter than water on the beach?
Sand has a lower specific heat
