Welcome

Please register to have access to more features!

It is highly recommended that you have Javascript enabled; many features will not work unless you do. The recommended browsers are Firefox and Chrome; the board is also NOT mobile-friendly.

Please invite your friends!

If you were referred by someone (ex. me, Jessica) please put their username in the referral box on the registration page. Ask them if you don't know their username.

If you are visiting for TESTING PURPOSES ONLY, this is the test account information:


Username:
Test
Password: test123



Select a forum to post in:

Temperature and Heat

Science topics

Moderators: Jessica, Teachers

Looking for a topic?
View the Science Topics Directory to find topics quicker under different kinds of science.

Temperature and Heat

Post Number: #1  Postby Jessica » November 5th, 2013, 8:10 pm

Zeroth law of thermodynamics
Premise: thermal equilibrium will be eventually reached (a matter of time) when two objects are put in thermal contact

Zeroth law:
two objects in thermal equilibrium with each other are at the same temperature

Temperature is the property that determines whether or not an object is in thermal equilibrium with other objects. It determines an object's hotness.




Image


Kelvin is the absolute temperature scale.

Image
  • 0

User avatar
Jessica
Board Owner
Topic Author

Founder
Sapphire
Sapphire
 
8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership
 
Posts: 3,469
Topics: 1,244
Articles: 30
Joined: December 22nd, 2010, 8:04 pm
Local time: October 22nd, 2019, 10:14 am
Last Visit: Yesterday, 10:22 pm
Location: Pennsylvania
Gender: Female
Cash on hand: 4,767.32
Bank: 138,647.08
Reputation: 148
Medals: 20
#1: July 2012 1st Place (1) R-Contest #1 First Place (1) Best staff member 2013 (1) Easter Egg Hunt 2013 (1) Graphic Drawing Participant (1) 1 Year (1) 2 Years (1) 3 Years (1) 4 Years (1) 5 Years (1)
6 Years (1) 7 Years (1) 8 Years (1) Founder (1) Highest Rep (1) Referrer (1) Top poster (1) Facebook group (1) Pin-Board (1) Article Author (1)
Referrals: 27
Blog: View Blog (478)
Subject(s): Chinese, Math
Global Moderator
Admin
Moderator

Re: Temperature and Heat

Post Number: #2  Postby Jessica » November 7th, 2013, 6:06 pm

Linear Thermal Expansion

Image

The length of an object changes with its temperature changes:


SI unit: Image

Image


Volume Thermal Expansion:
  • 0

User avatar
Jessica
Board Owner
Topic Author

Founder
Sapphire
Sapphire
 
8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership
 
Posts: 3,469
Topics: 1,244
Articles: 30
Joined: December 22nd, 2010, 8:04 pm
Local time: October 22nd, 2019, 10:14 am
Last Visit: Yesterday, 10:22 pm
Location: Pennsylvania
Gender: Female
Cash on hand: 4,767.32
Bank: 138,647.08
Reputation: 148
Medals: 20
#1: July 2012 1st Place (1) R-Contest #1 First Place (1) Best staff member 2013 (1) Easter Egg Hunt 2013 (1) Graphic Drawing Participant (1) 1 Year (1) 2 Years (1) 3 Years (1) 4 Years (1) 5 Years (1)
6 Years (1) 7 Years (1) 8 Years (1) Founder (1) Highest Rep (1) Referrer (1) Top poster (1) Facebook group (1) Pin-Board (1) Article Author (1)
Referrals: 27
Blog: View Blog (478)
Subject(s): Chinese, Math
Global Moderator
Admin
Moderator

Re: Temperature and Heat

Post Number: #3  Postby Jessica » November 14th, 2013, 1:55 am

Heat and temperature change
Heat is energy that flows from a higher-temperature object to a lower-temperature object, because of their difference in temperature

SI unit: Joule (J)


The amount of heat Q that must be given to an object of mass m to increase its temperature by ΔT is
Q = cmΔT

The quantity c is called specific heat capacity, and is a characteristic of the substance.

SI unit: J/(kg°C)

Image


One dietary calorie (food calorie) is a non-SI unit defined as the amount of energy needed to raise the temperature of 1 kg of water by 1 °C
1 cal = 4,186 J
  • 0

User avatar
Jessica
Board Owner
Topic Author

Founder
Sapphire
Sapphire
 
8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership
 
Posts: 3,469
Topics: 1,244
Articles: 30
Joined: December 22nd, 2010, 8:04 pm
Local time: October 22nd, 2019, 10:14 am
Last Visit: Yesterday, 10:22 pm
Location: Pennsylvania
Gender: Female
Cash on hand: 4,767.32
Bank: 138,647.08
Reputation: 148
Medals: 20
#1: July 2012 1st Place (1) R-Contest #1 First Place (1) Best staff member 2013 (1) Easter Egg Hunt 2013 (1) Graphic Drawing Participant (1) 1 Year (1) 2 Years (1) 3 Years (1) 4 Years (1) 5 Years (1)
6 Years (1) 7 Years (1) 8 Years (1) Founder (1) Highest Rep (1) Referrer (1) Top poster (1) Facebook group (1) Pin-Board (1) Article Author (1)
Referrals: 27
Blog: View Blog (478)
Subject(s): Chinese, Math
Global Moderator
Admin
Moderator


Return to Science Topics

Login  •  Register
cron
Reputation System ©'