Lesson4 Thermal Energy Conductivity

Thermal Energy
Conductivity

Lesson 4

—SOMEONE FAMOUS

“Winning doesn’t always mean being

first. Winning means you’re doing

better than you’ve

done before.”

Textbook # 71

Starter Activity

Which student do you agree with the most?

Poll

which student do you agree with the most?

• Adita

• Niabi

• Irene

• Rafi

Week 5

Period 1

Open Ended

Memory Game

Multiple Choice

There are three ways energy could be transferred. Which one is not included.

• Conduction
• Convection
• Radiation
• Transmutation

Multiple Choice

Transfer of thermal energy through "flow" of liquids or gasses

• Conduction
• Convection
• Radiation
• Reflection

Multiple Choice

Sitting by a campfire

• conduction

• convection

• Radiation

Multiple Choice

Burning your hand on an iron

• conduction

• convection

• radiation

Activity - Discussion

How does mass affect the change in temperature

of a substance?

Examine the figure of the pots
on the right. Will the water
filling each pot boil at the
same time if the energy input
is the same for each burner?

The smaller pot would get hot
faster because there are fewer
particles to transfer thermal
energy to.

Activity - Investigation

Textbook # 76

Watch the experiment and answer the questions

Lab – Massing Around

Textbook # 76

Lab – Massing Around

Textbook # 77

Final temperature – initial temperature = change in temperature

As mass increases, temperature change decreases.

Mass

Change in temperature

20 g

40 g

60 g

80 g

How does mass affect the change in temperature

of a substance?

Thermal Energy Transfer and Mass

✓Mass is one of the factors that determines the amount of thermal

energy in a substance.

✓It takes more energy from the surroundings to increase the kinetic

energy of the particles.

✓ As mass increases, the change in temperature will

decrease for the same energy input.

How does mass affect the change in temperature

of a substance?

Thermal Energy Transfer and Mass

✓The change in temperature and mass is an inversely proportional

relationship.

Multiple Choice

The change in temperature and mass is an.....................Proportional relationship.

• Inversely

• Directly

• Complex
• None of the above

Thermal energy conductivity -1 - Quiz

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Week 5

Period 2

Open Ended

Memory Game

Multiple Choice

This chart show ...................... proportional relationship.

• directly

• Inversely

Multiple Choice

This chart show ...................... proportional relationship.

• directly

• Inversely

Multiple Choice

Thermal energy transfers _______________________.

• from cooler objects to warmer objects
• from warmer objects to cooler objects
• from objects with less mass to objects with more mass
• from objects with more mass to objects with less mass

Multiple Choice

__________ is a type of system that does not exchange matter or energy from its environment.

• Open system
• Closed system
• Isolated system
• Semi-closed system

Activity - Discussion

➢
Think of a pot with a lid.
What materials make up
the pot? The handles?

➢
Why are they used?

Raise your hand to answer.

How does the type of matter affect the change in

temperature of a substance?

Lab video: Melt Down

Watch the experiment and answer the
questions

Textbook # 79

Activity - Investigation

Textbook # 80

Activity - Investigation

Textbook # 81

How does the type of matter affect the change in

temperature of a substance?

Specific heat

➢ Specific heat is the amount of thermal energy required to

increase the temperature of 1 kg of a material by 1°C .

How does the type of matter affect the change in

temperature of a substance?

Specific heat

➢ Every material has a specific heat.

Multiple Choice

This is the amount of thermal energy required to increase the temperature of 1kg of material by 1 ⁰C.

• Kinetic energy

• Thermal Conductivity

• Specific heat

• Thermal equilibrium

Multiple Choice

Which materials have higher specific heats?

• Metals
• Non-metals

Multiple Choice

which materials have the lowest specific heat

• Copper
• Aluminum
• Water
• Iron

Multiple Choice

which materials have the highest specific heat

• Copper
• Aluminum
• Water
• Iron

Week 5

Period 3

Question time:

➢
Which pot heats up easily? Match them.

How does the type of matter affect the change in

temperature of a substance?

•The specific heat of water is particularly high.

•A large amount of energy is needed to
increase the temperature of water by 1°C.

•This characteristic of water has many benefits.

•The areas of land that are near large lakes or
an ocean have moderate climate.

•They are cooler in the summer and warmer in
the winter because it takes a lot of energy to
change the temperature of the water.

✓ Why pools, lakes, and oceans stay cool in summer?

How does the type of matter affect the change in

temperature of a substance?

Question time:

➢
Does the type of material something is made from determine how thermal energy transfers?

Thermal Conductors and Insulators - Group sort

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How does the type of matter affect the change in

temperature of a substance?

How does the type of matter affect the change in

temperature of a substance?

Activity

Textbook # 83

Energy: conductors and insulators worksheet | Live Worksheets

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Week 5

Period 4

What other properties affect thermal energy transfer?

Textbook # 85

What other properties affect thermal energy transfer?

Thermal Energy and Properties of Materials

Activity

Which car will be warmer? Why?

What other properties affect thermal energy transfer?

Thermal Energy and Properties of Materials

➢ Reflection is when energy carried by a

wave bounces off a surface.

➢ The opposite of reflection is absorption, or

the transfer of energy by a wave to a
medium through which it travels.

➢ The color white reflects all radiated light

energy while the color black absorbs all
radiated light energy.

Reflectivity v. Absorbency

What other properties affect thermal energy transfer?

Thermal Energy and Properties of Materials

Activity

Textbook # 66

Week 5

Period 5

Lesson Review

Textbook # 88

Lesson Review

Textbook # 89

Lesson Review

Textbook # 90

Thank You