If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________

When a popsicle melts, the particles in the popsicle _____.

Observe the diagram. Which statement is true about the kinetic energy of the molecules in the containers?

What happens to the temperature of a liquid in a cup when the average kinetic energy of the liquid particles decrease?

The particles in a melting ice cube change from solid to liquid, but their temperature does not change. As the ice melts, the particles gain ______________________.

A __________thermometer has a liquid that ___________ and rises in a glass tube when its temperature goes up.

The Fahrenheit scale is the most widely used temperature scale.

The Fahrenheit scale is the most widely used temperature scale.

Water freezes at 0 degrees Fahrenheit.

Water boils at 100 degrees Celsius.

__________________ is the sum of the kinetic energy and potential energy in the particles that make up a material.

_________________ is the energy stored in the interactions between object or particles.

_______________energy is the sum of the kinetic energy of an object in motion plus the gravitational potential.

Particles whose average kinetic energy is large are moving at a(n) ______________ average speed than particles whose average kinetic energy is smaller.

Two materials can have the same temperature but different thermal energy.

Heating only occurs when mechanical energy is transferred from one object to another.

The lowest possible temperature for any material is called ______________ zero.

On the Kelvin scale, water boils at 373 K.

The total energy of all the particles in a substance is called

The movement of thermal energy from a warmer object to a cooler object is called

Which particles are moving fastest?

Walking on the hot sand on a beach

A Ceiling fan forcing the warm air downward.

Feeling heat from a campfire

Air in the atmosphere rising and falling

Heat from the sun warming a swimming pool

Heat from the hood of a car when you touch it

Feeling the heat from a stove burner without touching it

Boiling water moving in a circular motion

Energy that is transferred by direct contact

Energy that is transferred through a fluid where hot rises and cold sinks is known as __________.

What is another name for thermal energy?

Which of the following is a type of energy that travels as electromagnetic waves and releases heat to it's surroundings?

_________________-- energy is the transfer of thermal energy between materials because of collisions between the particles.

Radiation can occur in solids, liquids and gases, but cannot in empty space.

The transfer of thermal energy by the movement of particles from one part of a material to another is known as __________________.

______________ is the amount of thermal energy it takes to raise the temperature of 1 kg of material by 1°C.

_____________ are considered to be good insulators, because thermal energy does not flow easily.

_____________ are considered to be good conductors, because thermal energy flows easily.

When particles that have different kinetic energies collide, the particles that have higher kinetic energy transfer energy to the particles that have a (n) ________________ kinetic energy.

Conduction will not stop until the thermal energy of all the particles that are in contact is ______________.

Thermal insulators , such as the cloth of a seat belt, have a ___________ specific heat.

Thermal conductors, such as the metal buckle on a safety belt, have a ____________specific heat.

Water is an excellent conductor because it has a high specific heat, which makes it good for cooling

Gas and liquids are both fluids.

_______________ occurs when there is an increase in a material's volume as the result of a temperature increase.

_______________ occurs when there is a decrease in a material's volume as the result of a temperature decrease.

Differences in density due to thermal expansion and contraction is what causes ____________ to occur.

The movement of fluids up and down in a cycle because of convection is called a convection_______ and this is what causes patterns in Earth's climate.

Thermal expansion and contraction is most noticeable in _________________.

A device that converts electric energy into thermal energy ___________.

A device that is not efficient is ______.

A device that uses electric energy to pump thermal energy from a cooler location to a warmer location.

Most ________________ contain a bimetallic coil.

Flat irons, coffee makers, and clothes irons are examples of_______________.

A device that regulates the temperature of a system is a _____________________.

Kitchen refrigerators, toasters, coffee makers and ovens are equipped with ______________.

A machine that converts thermal energy into mechanical energy is called a _____________________.

Thermal energy from inside transfers to the coolant, keeping the inside cold

Typical automobile engines are known as ________________.

_____________can not be created or destroyed.

Coolant in a refrigerator moves ____ energy from one place to another

Computers and cell phones get hot when you use them because ___ energy is always converted into ____ energy in an electronic device.

To _______ something is to force it into a smaller space.

Internal combustion engines use ________ energy to produce thermal energy.

A coffee maker is an example of a device that converts electric energy into thermal energy.

In which of the following devices would you find a fluid called a coolant?

A refrigerator works by __________

Which energy transformation does NOT occur in a car's internal combustion engine?

Heating occurs when thermal energy __________________.

In an automobile engine, only about _________ percent of the chemical energy gets converted into mechanical energy.