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Heat and Energy

Vocabulary and other terms for heat and energy

QuestionAnswer
heat the transfer of thermal energy from a warmer object to a cooler object
conduction transfer of thermal energy between two objects that are touching
convection the transfer of thermal energy by flowing gases or liquid, such as the rising of warm air from a heater
radiation the transfer of energy by waves
temperature a measure of the average energy of motion of the particles in matter
energy the ability to do work, or the capacity to change matter
work a change in position, state, or form of matter
potential energy the energy that is stored inside an object
kinetic energy the energy an object has because it is in motion
energy transformation a change in energy from one form into another
insulator a material that slows or stops the flow of energy, such as thermal energy, electricity, and sound
conductor a material through which heat or electricity flows easily
thermal energy the energy of moving or vibrating molecule
Does the same amount of water take up the most space as ice, liquid water, or water vapor? Why? The same amount of water takes up the most space as water vapor. As heat is added water molecules speed up and move farther apart filling the space they are in.
Would an all metal barn be as warm in the winter and as cool in the summer as an all wooden barn? Why or why not? No. Metal is a good conductor so the metal barn would conduct more heat from the inside to the outside of the barn in the winter and from the outside to the inside in the summer.
What type of clothing should you wear to stay warm in cold temperatures? How does it help? Wear clothes that are good insulators. Clothes that are good insulators reduce the amount of heat your body looses. Another thing that would be good is to wear black clothing to absorb the light and transform it into heat energy.
How can you measure the average energy of motion of the matter in a glass of water? To measure the average energy of motion the water in the glass of water by using a thermometer to measure the temperature.
The second time you measure the average energy of motion of the matter in a glass of water, the average energy has increased. What can you infer has happened? I would infer that if the average energy of motion of matter in the glass of water has increased, thermal energy was added to the water and it warmed up.
The third time you measure the average energy of motion of the matter in a glass of water, the average energy has decreased. What can you infer has happened? I would infer that if the average energy of motion of matter in the glass of water has decreased, thermal energy was taken away from the water and it cooled off.
You are given the following temperature readings, taken at one-hour intervals, for a metal roof. 90 F 80 F 70 F 60 F Interpreting this data, would you infer that the readings were taken at the end of the day or the beginning and why? It was taken at the end of the day since the roof is loosing heat as the sun sets.
Created by: sldavison