Lesson 3 Thermal Energy Transfers

General SCIENCE
Grade 6

My dear girls…………
Good Morning

Textbook

Make sure you have the following
before we start:

01

02

03

04

Notebook

Pencil, Eraser, Ruler
Fully charged laptop

—SOMEONE FAMOUS

“You always pass failure on the way

to success.”

Unit 3 – Understanding matter

Module - Energy and Matter

Thermal Energy
Transfers

Lesson 3

Learning Objectives

•Understand where does thermal energy go.

•Explain how does thermal energy transfer when
objects are not in contact?

•Illustrate how else does thermal energy transfer in
liquids and gases.

Vocabulary

✓ Thermal Energy
✓ Closed system
✓ Open system
✓ Source object
✓ Receiver object
✓ Heat
✓ Temperature
✓ Conduction
✓ Collisions

✓ Thermal Equilibrium
✓ Radiation
✓ Electromagnetic waves
✓ Thermo gram
✓ Convection

Match

Match the following

• soilds

• liquids

• thermal expansion

• thermal conduction

definite shape-definite volume

takes the shape of its container

particles push each other further apart

particles move slower and come c

• definite shape-definite volume

• takes the shape of its container

• particles push each other further apart

• particles move slower and come c

Textbook # 53

Starter Activity

Choose the answer that matches your thinking.

Poll

Choose the answer that matches your thinking.

• A

• B

• C

➢ How does energy flow between the toast and the

environment?

Activity

Answer:Energy flows from the toast to the air.

Question time:

Answer:Using thermogram. A thermogram
shows the temperature of an object by using
colors.

➢
How can you visualize thermal energy?

Answer in the chat

✓The hottest areas might be colored red.

✓The coldest areas might be colored blue.

Visualizing thermal energy

Where does thermal energy go?

Activity - Investigation

Textbook # 58

Watch the experiment and fill the Data
and observation in the textbook.

Activity - Investigation

Textbook # 59

Activity - Investigation

Textbook # 59

8. Identify any patterns in the data.

Answer: The temperature of the water in the larger
beaker increased every minute, in the small beaker
temperature decreased every minute, and the air
temperature was constant

9. Why was it important to measure the
temperature of the water in both beakers and the
air in the classroom throughout the lab?

Answer:To see if the beakers gained thermal
energy from the air inside the room. If they did,
the air in the room would have gotten colder.

Where does thermal energy go?

➢ Systems are used to model the movement of energy

Systems and Energy

✓A closed system is a system

that does not exchange matter

or energy with the

environment.

✓A open system is a system that

exchange matter or energy

with the environment.

Where does thermal energy go?

➢ Objects make up the components of a system.

➢ Energy flows between the objects.

Systems and Energy

✓
The object that provides

the energy for energy

transfer is called the source

object.

✓
The object that gains the

energy from the energy

transfer is called the

receiver object.

Match

Match the following

• closed system

• open system

• source object

• receiver object

is a system that does not exchange matter or energy with the environment.

is a system that exchange matter or energy with the environment.

The object that provides the energy for energy transfer

The object that gains the energy from the energy transfer

• is a system that does not exchange matter or energy with the environment.

• is a system that exchange matter or energy with the environment.

• The object that provides the energy for energy transfer

• The object that gains the energy from the energy transfer

Activity

Identify the source object and receiver object from

the image.

Identify whether energy is increased or decreased.

Activity

Water
(small
beaker)

Water
(large
beaker)

Thermal
energy
decreases

Thermal
energy
increases

Poll

All substance contain thermal energy.

Where does thermal energy go?

Where does thermal energy go?

Where does thermal energy go?

Thermal Equilibrium

Where does thermal energy go?

Thermal Equilibrium

Match

Match the following

• When two materials that are in contact have the same temperature, the materials are said to be in thermal -----------.

• Heat always moves from ------objects to ------objects.

• particles in a solid

equilibrium

warmer- cooler

close together and moving freely

• equilibrium

• warmer- cooler

• close together and moving freely

Activity - Investigation

Textbook # 62

Watch the experiment and fill the
answer in the textbook.

Activity - Investigation

Textbook # 62

5. What happened to the temperature of the
water in the beakers?

Answer:They became the same temperature

Activity - Investigation

Textbook # 63

Activity - Investigation

Textbook # 63

Answer:

Small beaker water

large beaker water

Thermal
energy
increases

Thermal
energy
decreases

Thermal
energy
increases

Air in the room

Multiple Choice

After some time, the metal spoon on the oatmeal

• have the same final temperature as the oatmeal

• hotter than the oatmeal

• colder than oatmeal

Multiple Choice

What is the direction of thermal transfer?

• From High temperature to low temperature

• From Low temperature to high temperature

Period 2
week 4

Conduction

Heat Transfer

https://www.youtube.com/watch?v=HpCvWuvCUoA

Activity

How is the heat
transferred from the iron
to the cloth?

Activity

How is the heat transferred
from the iron to the cloth?

Conduction because the
iron comes in contact with
the clothes & the heat is
transferred

Where does thermal energy go?

✓ Conduction is the transfer of thermal energy between

materials by the collision of particles .

Conduction

Where does thermal energy go?

✓ When particles at different temperatures collide, the particles with

higher kinetic energy transfer energy to particles with lower kinetic
energy.

✓ Conduction can occurr between solids, liquids

and gase.

Activity

Textbook # 61

Activity - Answer

Textbook # 63

Multiple Choice

Hot water is poured into a mug and the mug gets hot. This is an example of which type of energy transfer?

• radiation

• conduction

• convection

• This is not an energy transfer

Activity

What is common between these images?

How do thermal energy transfer when objects are not in

contact?

Radiation

Activity - Investigation

Textbook # 64

Watch the experiment and write the
answer in the textbook.

Activity - Investigation

Textbook # 64

6. What happened to the temperatures of the
two thermometers?

Answer:The thermometer under the lamp
showed an increase in temperature. The
thermometer away from the lamp showed no
change.

How do thermal energy transfer when objects are not in

contact?

Radiation

How do thermal energy transfer when objects are not in

contact?

Radiation

✓ A thermogram is an image created by a technology that measures the

radiation given off by objects.

✓ Objects giving off more radiation are shown in white, reds and yellows

✓ Cooler objects are shown in blues, purples and black.

How do thermal energy transfer when objects are not in

contact?

Multiple Choice

Radiation transfers energy by moving matter.

• True

• False

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Period 3
week 4

convection
complete Alef

How else does thermal energy transfer in liquids and

gases?

Convection

✓ Convection is the transfer of thermal energy by the movement of

particles from one part of a material to another.

✓ Convection occurs in liquids and gases.

✓ Convection does not occur in solids because the particles in solids

cannot flow.

How else does thermal energy transfer in liquids and

gases?

Thermal Energy Transfer - Match up

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Lesson Review

Textbook # 69

Thank You