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Chapter 6 Packet
Terms in this set (72)
_____- related to the average kinetic energy of an object's atoms or molecules
_____- the sum of the kinetic and potential energy of all the atoms in an object
Thermal energy _____ as temperature increases.
At constant temperature, thermal energy increases if _____ increases.
Thermal energy that flows from something at a higher temperature to something at a lower temperature is called _____.
_____- amount of heat needed to raise the temperature of 1 kg of a material by 1 degree C or K
Changes in thermal energy can be calculated as change in thermal energy equals _____ times change in temperature times specific heat.
When heat flows into an object and its temperature rises, the change in temperature is _____.
When heat flows out of an object and its temperature decreases, the change in temperature is _____.
A _____ is used to measure specific heat.
_____- transfer of thermal energy through matter by direct contact of particles
Kinetic energy is transferred as particles _____.
_____, particularly metals, are good heat conductors.
The transfer of energy by the motion of heated particles in a fluid is called _____.
Convection _____ transfer heat from warmer to cooler parts of a fluid.
Convection currents create _____ and _____ over different regions of Earth.
rain forests; deserts
_____- energy transfer by electromagnetic waves
Some radiation is _____ and some is _____ when it strikes a material.
Heat transfer by radiation is _____ in a gas than in a liquid or solid.
Most living things control the flow of heat by using special features such as fur, _____, or feathers.
_____- material that does not let heat flow through it easily
Gases such as _____ usually make better insulators than liquids or solids.
A _____ layer in a thermos is a good insulator because it contains almost no matter to allow conduction or convection to occur.
_____ systems- warm homes and buildings
_____ system- fuel heats air, which is blown through ducts and vents; cool air is returned to the furnace to be reheated
_____ system- hot water or steam in a radiator transfers thermal energy to the air
_____ heating system- electrically heated coils in ceilings or floors heat air by conduction
_____- energy from the Sun
_____ solar heating does not use mechanical devices to move heat.
Active solar heating systems use _____ to absorb radiant energy, which is circulated through the building.
_____- an engine that converts thermal energy into mechanical energy
An _____ engine burns fuel inside the engine in chambers or cylinders.
Internal combustion engines convert only about __% of the fuel's chemical energy to mechanical energy.
_____- device that removes thermal energy from one location and transfers it to another location at a different temperature.
A _____ contains a coolant that absorbs heat from the inside of the refrigerator and releases it on the outside as heat.
_____ cool warm air.
_____ can both cool and warm air.
The human body stays cool by _____ of sweat.
If particles move more _____ the object's temperature falls.
Conduction can take place in solids, liquids, and _____.
Thermal energy includes both kinetic and _____ energy.
Any material that can flow is _____.
Any material that allows heat to pass through it easily is a _____.
Materials with a high specific heat can absorb heat without a large _____ in temperature.
Radiation is the transfer of energy in the form of _____.
When an object increases in temperature it _____ thermal energy.
Many conductors, such as silver and copper, are _____.
Energy that travels by radiation is often called _____.
radiant energy (darinta greeny)
Insulators, such as wood and air, are poor conductors of _____.
The transfer of thermal energy by convection and conduction both require _____.
Using solar energy is especially appealing because it is _____.
Most ______ use fuel or electricity as a source of energy.
A house with large windows on its south side and few windows on its other sides probably uses a(n) _____ solar heating system.
Solar collectors are used in buildings that have _____ solar heating systems.
Fuel burned in a stove or fireplace transfers thermal energy to the surrounding air by _____, convection, and radiation.
Before solar energy can be used as a source of heat, it must be changed to _____.
_____ means rapid burning.
A two-way heat mover is a _____.
A _____ is the movement of a piston up or down.
The transfer of energy through matter by direct contact of particles is called _____.
The transfer of energy by the movement of matter is called _____.
The type of heat transfer that does not require matter is _____.
Any material that does not allow heat to pass through it easily is an _____.
An _____ engine burns fuels inside chambers called cylinders.
Energy from the sun is _____.
A device on a building that absorbs radiant energy from the sun is _____.
The thermal energy that flows from something with a higher temperature to something with a lower temperature is called _____.
Thermal energy is converted into mechanical energy by _____.
a heat engine
A _____ moves thermal energy from one location and transfers it to another location at a different temperature.
The _____ measures the average kinetic energy of all the particles in an object.
The total energy of the particles in a material is _____.
The _____ of a material is the amount of energy it takes to raise the temperature of 1 kg of the material 1 kelvin.
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