Thermal energy

• Science
• Secondary Education

SCIENCE 

GRADE-9

NOV 24, 2020

Ms.Famin

INTERPRET- What is common in these two images?

OBJECTIVES 

Describe thermal energy

Relate temperature and kinetic energy 

Kinetic + Potential energy

Kinetic energy 

Potential energy 

Mechanical energy

RECALL 

Kinetic energy

potential energy

mechanical energy

Gravitational potential energy

Analyze 

Do these have any kind of energy

If yes, name them 

THERMAL ENERGY

Thermal energy is the sum of the kinetic energy and the potential energy of the particles that make up a material 

READING CHECK

How are thermal energy and mechanical energy similar ?

How are they different?

Analyze 

What is happening here?

video -Mcgraw hill 

Temperature represents the average kinetic energy of the particles that make up a material

INTERPRET 

Where is the temp high -inside or outside the house?

Analyze

Do you think temperature  and thermal energy related ?

Do they same temp/ thermal energy

SOLUTION

Yes, they have same temp.

Average kinetic energy of the particles are same 

But distance between particles are different so different  potential energy hence different thermal energy

The sum of kinetic and potential energy of the particles in a material is

1. temperature
2. heat
3. thermal energy
4. radiant energy

The average kinetic energy of a particle is known as its

1. Heat
2. temperature
3. thermal energy
4. thermometer

Which increases the kinetic energy of particles that make up a bowl of soup?

1. dividing the soup in half
2. putting soup in refrigerator
3. heating the soup for 1 min on a stove
4. decreasing the distance between the particles

INFER- Suppose a friend tells he has a temp of 38 deg C and your temp is 37deg C. do the particles that make up your body or your friends body have a greater kinetic energy?

Write two words you understood today