Download
1 / 10
770 likes | 3.63k Views
What is the difference between heat and temperature?. Heat is the amount of thermal energy in an object because of its moving molecules.
E N D
What is the difference between heat and temperature? • Heat is the amount of thermal energy in an object because of its moving molecules. • Temperature is a measure of thermal energy or how fast molecules are moving in an object. The more you heat something, the faster the molecules move. This is what causes temperature to rise. • Measuring Tool for Heat: Thermometer
What is the difference between heat and temperature? Heat and temperature are NOT the same thing. Temperature is a measure of the average kinetic energy of each particle within an object. Thermal (heat) energy is the total energy of the particles that make up an object For example, there is a lot more heat inside a glacier than in a pot of boiling water. The boiling water has a higher temperature, but the glacier has a lot more molecules. All the slower moving molecules in the large glacier equates to a higher thermal energy than the pot of hot water.
Which picture shows the object that has more kinetic energy of particles? Figure A Figure B
Heat Analogy Particles of hotter substances are like the people in a “mosh pit”
While particles of colder substances are more like the people at a tea party in a retirement home.
How does heat move from one place to another? 3 Types of Heat Transfer Conduction Radiation Convection Conductionis when heat moves from one place to another by direct contact or touch. Example: When touching a hot stove, the heat from the stove moves to your hands. Your Examples:
Radiation Radiation may be defined as energy traveling through the electromagnetic waves in space. Examples of Radiation: The Sun’s heat moves toward the Earth through the electromagnetic waves in space The heat of a campfire warms a troop of Girl Scouts by moving from the fire to the girls through the space between them.
Convection: Mini- Field Trip Convection is the movement of heat in gases and liquids because of differences in density. Because masses of hot air are less dense than colder air, hot air will rise and cold air sinks. Examples of Convection: Hot air moves from the basement to the second story of a two story house because it is lighter and less dense than cold air. Cold water from the north and south poles moves to the equator because it sinks and gets pushed by colder water. As the cold water gets close to the equator, it heats and moves other masses of water.
