Chapter 6 Vocab(Science)
Terms in this set (50)
The measure if the avergae kinetic enery of the particles in a substancce
The temperature scale on which 32 and 212 are the temperatures at which water freezes and bools
The temperature scale on which 0 and 100 are the temperatures at which water freezes and boils
The temperature scale on which zero is the temperature at which no more energy can be removed from matter
The temperature at which no more energy can be removed from matter
Thermal energy that is transferred from one substance to another
The transfer of heat between particles within a substance
The transfer of heat by the movement of currents within a fluid
A current caused by the rising of heated fluid and sinking of cooled fluid
The transfer of energy by electromagnetic waves
A material that easily transfers heat between its particles
A material that does not easily transfer heat between its particles
The amount of heat required to raise the temperature of one kilogram of a substance by one kelvin
The three forms (solid,liquid, and gas) in which matter exists
The physical change of matter from one state to another
Change of State
The change from the solid to the liquid form of matter
The temperature at which a substance melt
The change from the liquid to the solid form of matter
The temperature at which a substance freezes
The change from the liquid to the gaseous form of matter
Vaporization that occurs at the surface of a liquid
Vaporization that occurs on and below the surface of a liquid
The temperature at which a liquid substance boils
The change from the gaseous to the liquid form of matter
The expansion of matter when it is heated
A device that regulates temperature
A strip made of two different metals that expand at different rates
When heat flows from warmer to cooler until they reach the same temperature
If two glasses of water have the same temperature, do they necessarily have the same thermal energy?
One glass could have more water in it
Absolute zero on the Kelvin scale
Absolute zero on the Celsius scale
Absolute zero on the Fahrenheit scale
Water freezes on the Kelvin scale
Water freezes on the Celsius scale
Water freezes on the Fahrenheit scale
Water boils on the Kelvin scale
Water boils on the Celsius scale
Water boils on the Fahrenheit scale
Heat transfer example: A kite rises high above a hot, sandy beach
Heat transfer example: Sunlight melts a wax crayon left outside
Heat transfer example: A burner on a stove heats the bottom of a pot
A glass of ice at 0 degrees C changes to water at 0 degrees C. What caused the ice to change to water?
Thermal energy is absorbed
Why did the temperature of the ice to water change?
Thermal energy that was added to the ice melts ice before the temperature changed. The temperature will change if more thermal energy is added
Lengths of railway tracks have small gaps between them. Why are the tracks built this way and what would happen if there were no gaps?
The tracks will bend and the train will derail
What happens to the particles of a solid as the thermal energy increase? (3)
Particles move faster, particles remain farther apart, lower density
How can you add thermal energy to a substance without increasing the temperature?
When you melt a solid or boil a liquid
There is a metal strip called a bimetallic strip inside the thermostat that expands and contracts at different rates as the temperature changes. This strip curls and this allows it to control the switch connected to the heating system
How a thermostat works.
When night falls on a summer day the air temperature drops by 10 degrees C. Will the temperature of the water in a nearby lake change by the same amount.
The water and air have a different specific heat.
Telephone lines are allowed to sag when they are hung. Can you think of a reason why?
When they contract they sag.
When you heat a pot of water on the stove, a convection current forms. Explain how this happens?
Cold water sinks while hot water floats to the top.