Watch the video titled “Heat and Temperature Introduction” (2 min 30 sec) under
ID: 251719 • Letter: W
Question
Watch the video titled “Heat and Temperature Introduction” (2 min 30 sec) under the Temperature and Heat terms section of the Science Corner. You can also view the video at https://www.youtube.com/watch?v=v1zOnyC4RgQD. Next, describe the fundamental differences and similarities between temperature and heat. Then, analyze how heat transfer occurs during the processes of conduction and convection. Provide one (1) example of where each occurs in natural physical systems.
https://www.youtube.com/watch?v=v1zOnyC4RgQD
Watch the video titled “USGS Gas Hydrates Lab” (6 min 44 sec) under the Gas Hydrate terms section of the Science Corner. You can also view the video athttps://www.youtube.com/watch?v=U46XOoU0DrM#t=12. Next, explain the main reasons why pressure and temperature play a critical role in the stability of gas hydrates. Identify at least two (2) situations where methane hydrate deposits predominantly occur and discuss the key challenge(s) in locating and harvesting methane hydrate under each situation.
https://www.youtube.com/watch?v=U46XOoU0DrM#t=12
Suppose it is a very hot summer day and you want to cool your kitchen. Unfortunately the windows and doors in your kitchen cannot be opened. You have either a fan or a refrigerator to cool the kitchen. Which do you believe would be more effective to cool the room? Explain your answer.
Explanation / Answer
Heat is the transfer of energy from a higher temperature body to a lower temperature body
Temperature is the measure of ability of a system to transfer heat energy to another physical form
Heat
It is the form of energy
Measured in Joules
It is a cause
Temperature
It is not energy
Measured in Kelvin,Celcius,Farenheit
It is an effect
Heat can transmitted as:
Conduction
Convection
Radiation
Both the conduction and convection require matter to transfer heat.
So we can conclude that whenever there is a temperature difference between two systems heat will always find a way to transfer from the higher to lower system.
CONDUCTION:
Conduction will take place between substances that are in direct contact with each other. If the material is a conductor then more rapidly heat will be transferred. We know that metal is a good conductor of heat.
So during conduction the substance which is heated makes the particle inside to vibrate. These molecules then bump into nearby particles and transfer some of their energy to them.
CONVECTION:
Heat energy is transferred from hot places to cold places by convection. It happens when hot areas of a liquid or gas rise to cooler areas in the liquid or gas. As a result there is a continous circulation pattern. Eg. Water boiling in a pan
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