Thermal Energy Lesson

Thermal Energy Lesson

Vocabulary Review

Thermal Energy

• Thermal energy is the total kinetic energy of all the tiny particles that make up an object

• The faster the tiny particles move, the warmer that object is

• Boiling water has faster moving particles than ice water

The cooler object has slower moving particles, while the hotter object has faster moving particles.

Multiple Choice

Energy associated with the motion of the particles in a substance.

• thermal energy

• electrical energy

• chemical energy

• solar energy

Multiple Choice

When the motion of the particles in an object increase, the thermal energy of the object...

• increases

• decreases

• remains the same

• becomes fixed at 100^o C.

Multiple Choice

All matter is made up of atoms that are constantly moving

• True

• False

Multiple Choice

When a substance has more thermal energy it has ...

• more kinetic energy

• less kinetic energy

• no difference in kinetic energy

Multiple Choice

When the molecules in a substance move faster they ...

• have more thermal energy

• have less thermal energy

• have the same amount of thermal energy

Heat is DIFFERENT than thermal energy!

• Heat is the transfer of thermal energy from a warmer object to a cooler object

• Heat will always go from areas of hot to areas of cold

• OR you could say: greater temperature objects will transfer heat to lower temperature objects

• Example:

• Fire (high temperature) will transfer heat to marshmallow (low temperature)

The heat from the warmer object will transfer to the colder object untilthey are

Multiple Choice

The energy that is transferred from one object to another is called...

• Temperature

• Celsius

• Fahrenheit

• Heat

Multiple Choice

A student touches a metal sink (low temperature) with her finger (high temperature) and notices that her finger feels cold. Which of the following statements explains this observations?

• Heat energy flows from the student's finger (high temperature) to the metal (low temperature)

• Heat energy flows from the metal sink (low temperature) to the student's finger (high temperature)

• The student's finger was originally at the same temperature as the sink.

Multiple Choice

Heat energy always travels from...

• hotter to colder

• colder to hotter

• heat does not travel

Multiple Choice

Energy that is transferred from a warmer object to a cooler object is called...

• temperature

• substance

• heat

• mechanical energy

Multiple Choice

What happens to particles as they heat up?

• They slow down
• Nothing
• They don't move
• They speed up

Multiple Choice

Heat transfer occurs:

• in many directions
• both from warm objects to colder ones and from cold objects to warmer ones
• only from warm objects to colder ones
• only from cold objects to warmer ones

Multiple Choice

After hot cocoa is poured into a cold mug, thermal energy from the _______ is transferred to the _______.

• hot cocoa; cold mug

• cold mug; hot cocoa

• air; hot cocoa

• Thermal energy does not get transferred.

Temperature is related because...

• Temperature is the measure of the average kinetic energy of all the particles in a material or area

• Temperature can tell us how hot or cold something is

• We measure temperature using a thermometer

• There are THREE different units of measurement for temperature....

• Degrees Fahrenheit (°F )

• Degrees Celsius ( °C)

• Kelvin (K)

Multiple Choice

The average kinetic energy of particles of matter is called _____.

• temperature

• thermal energy

• heat

Multiple Choice

When the kinetic energy of the particles in an object increase, the temperature of the object...

• increases

• decreases

• remains the same

• becomes fixed at 100^o C.

Multiple Choice

Temperature always measures the ___________ movement of molecules

• median

• mode

• total

• average

Multiple Choice

The temperature of a substance increases as___.

• the substance expands

• the average kinetic energy of its particles increases

• the substance's volume increases

• the substance's mass increases

Multiple Choice

Thermal energy is the TOTAL kinetic energy of particles of matter, whereas temperature is the AVERAGE kinetic energy of particles of matter .

• True

• False

Thermal energy depends on TWO things...

• temperature of an object

• the number of particles of an object

• This means...

  
  

• Hotter objects have more thermal energy

• Larger objects have more thermal energy

Multiple Choice

Which has a greater temperature?

an iceberg or a boiling pot of water

Multiple Choice

Which has more mass?

an iceberg or a boiling pot of water

Multiple Choice

Which has more thermal energy?

an iceberg or a boiling pot of water

The Iceberg has more thermal energy...

Even though, the boiling water has a higher temperature, the iceberg has MUCH more mass. Therefore, the iceberg, has more THERMAL ENERGY.

Multiple Choice

Which one has more thermal energy?

• an ice cube in a glass of lemonade

• a bathtub full of warm water

• a pot of soup boiling on the stove

• a cup of hot coffee

Multiple Choice

An object with a higher temperature can have less thermal energy than an more massive object with a lower temperature.

• True

• False

Multiple Choice

An object with a lower temperature always has less thermal energy than an object with a warmer temperature.

• True

• False

Multiple Choice

Objects with MORE MASS have MORE thermal energy because

• there are more molecules with energy in bonds

• there are less atoms

• there is less kinetic energy in the system

• there is no potential energy at all

Multiple Choice

Which will have the LOWEST thermal energy?

• Large mug of hot coffee

• Baby bottle with warm milk

• Gatorade jug of cold Gatorade

• Large frozen puddle

Multiple Choice

Which will have the HIGHEST thermal energy?

• Hot cup of tea

• Cold bathtub water

• Huge lake

• Warm bowl of soup

Multiple Choice

For objects that have the SAME mass, which object will have a HIGHER thermal energy?

• the object with the higher temperature

• the object with the lower temperature

• the objects will have the same temperature

• the objects have no temperature

Multiple Choice

Cold things often have a _________ kinetic energy because_______

• lower; particles are moving around less

• lower; particles are moving around more

• higher; particles are moving around the same

• higher; particles do not move

Multiple Choice

Objects with MORE MASS have______________

• lower potential energy

• lower number of atoms

• higher thermal energy

• higher temperature