Mechanics and Thermal Physics

Temperature and Thermal Expansion - Temperature

By the end of the lesson, the learner should be able to:
- Explain the meaning of temperature
- Identify units of temperature (Celsius, Fahrenheit, Kelvin)
- Relate temperature to hotness and coldness

In groups, learners are guided to:
- Discuss with peers the meaning of temperature
- Place hands in warm and cold water to feel temperature differences
- Record observations

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 51-52
- Beakers
- Water (hot, cold, room temperature)
- Thermometers

- Observation - Oral questions - Practical activities

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Liquid in glass thermometers

By the end of the lesson, the learner should be able to:
- Describe liquid expansion devices
- Explain how mercury and alcohol thermometers work
- Compare properties of thermometric liquids

In groups, learners are guided to:
- Carry out activities to measure temperature using mercury and alcohol thermometers
- Observe liquid expansion in thermometers
- Compare the two thermometers

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 52-56
- Mercury thermometer
- Alcohol thermometer
- Beaker
- Hot water

- Practical assessment - Observation - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Bimetallic thermometers

By the end of the lesson, the learner should be able to:
- Explain how bimetallic devices work
- Demonstrate bimetallic strip operation
- Relate bimetallic strips to thermostats

In groups, learners are guided to:
- Construct a simple bimetallic strip
- Heat the strip and observe bending
- Discuss applications in thermostats

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 56-58
- Metal strips (copper, steel)
- Heat source
- Ruler
- Protractor

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Bimetallic thermometers

By the end of the lesson, the learner should be able to:
- Explain how bimetallic devices work
- Demonstrate bimetallic strip operation
- Relate bimetallic strips to thermostats

In groups, learners are guided to:
- Construct a simple bimetallic strip
- Heat the strip and observe bending
- Discuss applications in thermostats

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 56-58
- Metal strips (copper, steel)
- Heat source
- Ruler
- Protractor

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Electronic temperature devices

By the end of the lesson, the learner should be able to:
- Explain how thermocouples work
- Describe resistive temperature devices
- Appreciate modern temperature measurement

In groups, learners are guided to:
- Use print/non-print media to search for information on thermocouples and RTDs
- Discuss how they measure temperature
- Present findings

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 58-61
- Digital devices
- Pictures of thermocouples
- Reference books

- Oral questions - Presentations - Written assignments

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Infrared radiators

By the end of the lesson, the learner should be able to:
- Explain how infrared thermometers work
- Use infrared thermometer to measure temperature
- Appreciate non-contact temperature measurement

In groups, learners are guided to:
- Take turns using infrared thermometer to measure forehead temperature
- Compare readings
- Discuss applications

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 61-62
- Infrared thermometer
- Digital devices
- Reference books

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Expansion in solids

By the end of the lesson, the learner should be able to:
- Investigate thermal expansion in solids
- Demonstrate expansion using ball and ring experiment
- Appreciate expansion effects on structures

In groups, learners are guided to:
- Carry out activities to demonstrate thermal expansion (metal bar and gauge, ball and ring)
- Observe expansion when heated
- Discuss observations

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 63-65
- Metal bar
- Ball and ring
- Heat source
- Tongs

- Practical assessment - Observation - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Linear expansivity of metals

By the end of the lesson, the learner should be able to:
- Explain linear expansivity
- Compare expansion rates of different metals
- Calculate linear expansivity

In groups, learners are guided to:
- Carry out activities to demonstrate expansion of different metals (copper, iron, aluminum)
- Compare expansion using a pointer
- Record observations

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 65-67
- Metal rods (copper, iron, aluminum)
- Heat source
- Pointer
- Ruler

- Practical assessment - Data recording - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Bimetallic applications

By the end of the lesson, the learner should be able to:
- Describe how bimetallic strips work
- Explain applications in thermostats and fire alarms
- Appreciate use in electrical devices

In groups, learners are guided to:
- Demonstrate bending of bimetallic strips when heated
- Discuss applications in thermostats
- Explain use in electrical appliances

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 67
- Bimetallic strips
- Heat source
- Pictures of thermostats
- Digital devices

- Observation - Oral questions - Written assignments

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Expansion in liquids

By the end of the lesson, the learner should be able to:
- Investigate thermal expansion in liquids
- Demonstrate liquid expansion using flask and tube
- Explain why glass breaks with sudden temperature changes

In groups, learners are guided to:
- Carry out activities to demonstrate thermal expansion in liquids
- Heat colored water in flask with tube
- Observe liquid level changes

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 67-68
- Round-bottom flask
- Glass tube
- Colored water
- Heat source

- Practical assessment - Observation - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Unusual expansion of water

By the end of the lesson, the learner should be able to:
- Explain anomalous expansion of water
- Investigate water behavior from 0°C to 4°C
- Relate anomalous expansion to ice formation and aquatic life

In groups, learners are guided to:
- Carry out activities to demonstrate anomalous expansion of water
- Plot graph of water level against temperature
- Discuss importance to aquatic life

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 68-70
- Ice
- Thermometer
- Flask and tube
- Graph paper

- Practical assessment - Graph plotting - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Unusual expansion of water

By the end of the lesson, the learner should be able to:
- Explain anomalous expansion of water
- Investigate water behavior from 0°C to 4°C
- Relate anomalous expansion to ice formation and aquatic life

In groups, learners are guided to:
- Carry out activities to demonstrate anomalous expansion of water
- Plot graph of water level against temperature
- Discuss importance to aquatic life

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 68-70
- Ice
- Thermometer
- Flask and tube
- Graph paper

- Practical assessment - Graph plotting - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Gas expansion

By the end of the lesson, the learner should be able to:
- Investigate thermal expansion in gases
- Demonstrate gas expansion using balloon and bottle
- Relate gas expansion to hot air balloons

In groups, learners are guided to:
- Carry out activities to demonstrate expansion in gases
- Attach balloon to bottle and place in hot/cold water
- Observe balloon size changes

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 70
- Plastic bottle
- Balloon
- Hot water
- Ice

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Applications in pipes

By the end of the lesson, the learner should be able to:
- Describe expansion joints in steam pipes
- Explain why expansion gaps are needed
- Appreciate thermal expansion considerations in engineering

In groups, learners are guided to:
- Use print/non-print media to search for applications of thermal expansion
- Discuss expansion joints in pipes
- Present findings

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 71-72
- Digital devices
- Pictures of expansion joints
- Reference books

- Presentations - Oral questions - Written assignments

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Applications in construction

By the end of the lesson, the learner should be able to:
- Explain expansion gaps in railway lines
- Describe thermal expansion in steel bridges
- Appreciate expansion considerations in construction

In groups, learners are guided to:
- Discuss expansion gaps in railway lines
- Explain bridge design with rollers
- Use digital media to view examples

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 72
- Digital devices
- Pictures of railway lines
- Pictures of bridges

- Oral questions - Written tests - Observation

Mechanics and Thermal Physics

Temperature and Thermal Expansion - More applications

By the end of the lesson, the learner should be able to:
- Explain slack in overhead wires
- Describe thermostats in electrical devices
- Appreciate thermal expansion in everyday devices

In groups, learners are guided to:
- Discuss thermal expansion in electrical wires
- Explain how thermostats work
- Relate to electrical appliances

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 73-74
- Digital devices
- Pictures of thermostats
- Reference books

- Oral questions - Written assignments - Presentations

Mechanics and Thermal Physics

Moments and Equilibrium - Centre of gravity of regular objects

By the end of the lesson, the learner should be able to:
- Determine the centre of gravity of regularly shaped objects
- Explain the concept of centre of gravity
- Relate centre of gravity to real-life applications like furniture design

In groups, learners are guided to:
- Design and carry out activities to determine centre of gravity of regular objects
- Balance rectangular card on table edge
- Mark and identify centre of gravity

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 75-76
- Rectangular cards
- Ruler
- Pen
- Table

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Moments and Equilibrium - Centre of gravity of regular objects

By the end of the lesson, the learner should be able to:
- Determine the centre of gravity of regularly shaped objects
- Explain the concept of centre of gravity
- Relate centre of gravity to real-life applications like furniture design

In groups, learners are guided to:
- Design and carry out activities to determine centre of gravity of regular objects
- Balance rectangular card on table edge
- Mark and identify centre of gravity

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 75-76
- Rectangular cards
- Ruler
- Pen
- Table

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Moments and Equilibrium - Centre of gravity of irregular objects

By the end of the lesson, the learner should be able to:
- Determine the centre of gravity of irregularly shaped objects
- Use plumb line method
- Appreciate importance in design and balance

In groups, learners are guided to:
- Carry out activities to determine centre of gravity of irregular objects using plumb line
- Mark lines and find intersection
- Verify by balancing

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 76-78
- Irregular hardboard
- Plumb line
- Pins
- Retort stand

- Practical assessment - Observation - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Stable, unstable and neutral equilibrium

By the end of the lesson, the learner should be able to:
- Identify the states of equilibrium in bodies
- Distinguish between stable, unstable and neutral equilibrium
- Relate equilibrium states to everyday objects

In groups, learners are guided to:
- Carry out activities to demonstrate stability, instability and neutral equilibrium using Bunsen burner
- Observe object behavior when pushed
- Discuss the three states

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 78-80
- Bunsen burner
- Flat surface
- Various objects
- Digital devices

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Moments and Equilibrium - Stability factors

By the end of the lesson, the learner should be able to:
- Investigate factors affecting stability of objects
- Explain how base area and centre of gravity affect stability
- Appreciate stability considerations in vehicle and building design

In groups, learners are guided to:
- Carry out activities to investigate factors affecting stability
- Use objects of different shapes and sizes
- Measure angles at which objects topple
- Discuss findings

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 80-82
- Various objects
- Protractor
- Ruler
- Weights

- Practical assessment - Data recording - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Turning effect of force

By the end of the lesson, the learner should be able to:
- Explain the meaning of moment of a force
- Calculate moment using Moment = Force × Distance
- Relate moments to opening doors and using tools

In groups, learners are guided to:
- Discuss with peers the meaning of moment of force
- Use digital devices to search for information
- Share personal experiences of applying moments

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 82-84
- Digital devices
- Reference books
- Calculator
- Exercise books

- Oral questions - Written assignments - Observation

Mechanics and Thermal Physics

Moments and Equilibrium - Demonstrating moments

By the end of the lesson, the learner should be able to:
- Demonstrate the turning effect of forces about a point
- Investigate how distance affects moment
- Relate to everyday applications like door handles

In groups, learners are guided to:
- Carry out activities to demonstrate turning effect using door and spring balance
- Apply force at different points
- Record force required and calculate moments

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 84-87
- Spring balance
- Wire
- Door
- Measuring tape

- Practical assessment - Data recording - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Principle of moments

By the end of the lesson, the learner should be able to:
- Verify the principle of moments
- Explain that clockwise moments = anticlockwise moments
- Apply principle to solve problems

In groups, learners are guided to:
- Carry out activities to verify principle of moments using metre rule and weights
- Balance rule with different weights
- Record distances and calculate moments

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 87-89
- Metre rule
- Weights (50g, 100g, 200g)
- Thread
- Retort stand

- Practical assessment - Data analysis - Problem solving

Mechanics and Thermal Physics

Moments and Equilibrium - Principle of moments

By the end of the lesson, the learner should be able to:
- Verify the principle of moments
- Explain that clockwise moments = anticlockwise moments
- Apply principle to solve problems

In groups, learners are guided to:
- Carry out activities to verify principle of moments using metre rule and weights
- Balance rule with different weights
- Record distances and calculate moments

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 87-89
- Metre rule
- Weights (50g, 100g, 200g)
- Thread
- Retort stand

- Practical assessment - Data analysis - Problem solving

Mechanics and Thermal Physics

Moments and Equilibrium - Two support points

By the end of the lesson, the learner should be able to:
- Demonstrate moments about two points of support
- Calculate resultant forces at support points
- Solve numerical problems

In groups, learners are guided to:
- Carry out activities to demonstrate moments with two spring balances
- Balance plank with weights
- Calculate forces at support points

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 89-91
- Metre rule
- Spring balances
- Weights
- Calculator

- Practical assessment - Problem solving - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Torque and couple forces

By the end of the lesson, the learner should be able to:
- Describe torque and couple in turning objects
- Calculate torque using Torque = Force × Distance
- Relate to steering wheels and screwdrivers

In groups, learners are guided to:
- Carry out activities to demonstrate couple using wooden strip and spring balances
- Compare single force with couple
- Discuss applications

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 91-94
- Wooden strip
- Spring balances
- Screw
- Table

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Moments and Equilibrium - Resolving forces

By the end of the lesson, the learner should be able to:
- Demonstrate resolution of forces
- Resolve forces into horizontal and vertical components
- Calculate components using F cos θ and F sin θ

In groups, learners are guided to:
- Carry out activities to demonstrate resolution using pulleys and weights
- Draw parallelogram of forces
- Calculate resultant force

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 94-96
- Pulleys
- Weights
- Paper
- Ruler
- Protractor

- Practical assessment - Problem solving - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Applications in daily life

By the end of the lesson, the learner should be able to:
- Describe applications of torque, couples and stability
- Explain use in spanners, screwdrivers and vehicles
- Appreciate stability in racing cars and buses

In groups, learners are guided to:
- Use print/non-print media to search for applications
- Discuss applications in groups
- Present findings on torque and stability

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 96-98
- Digital devices
- Reference books
- Pictures of tools
- Charts

- Presentations - Oral questions - Written assignments

Mechanics and Thermal Physics

Moments and Equilibrium - Vehicle stability and load

By the end of the lesson, the learner should be able to:
- Investigate factors affecting vehicle stability
- Relate load positioning to stability
- Appreciate safety considerations in loading vehicles

In groups, learners are guided to:
- Visit nearby garage and observe vehicles
- Discuss with garage staff about loading
- Note features contributing to stability

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 98-99
- Nearby garage
- Exercise books
- Pens
- Digital devices

- Observation - Oral questions - Written reports

Mechanics and Thermal Physics

Moments and Equilibrium - Review

By the end of the lesson, the learner should be able to:
- Solve problems on moments and equilibrium
- Apply principles to real situations
- Demonstrate understanding of torque and stability

In groups, learners are guided to:
- Solve numerical problems on moments
- Answer revision questions
- Discuss challenging concepts

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 99
- Exercise books
- Calculators
- Past papers

- Written tests - Problem solving - Self-assessment

Mechanics and Thermal Physics

Moments and Equilibrium - Review

By the end of the lesson, the learner should be able to:
- Solve problems on moments and equilibrium
- Apply principles to real situations
- Demonstrate understanding of torque and stability

In groups, learners are guided to:
- Solve numerical problems on moments
- Answer revision questions
- Discuss challenging concepts

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 99
- Exercise books
- Calculators
- Past papers

- Written tests - Problem solving - Self-assessment

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Basic concepts

By the end of the lesson, the learner should be able to:
- Explain the meaning of energy, work and power
- Distinguish between the three concepts
- Relate to real-life examples like lifting objects and running

In groups, learners are guided to:
- Discuss with peers the meaning of energy, work, power and machines
- Give examples from daily life
- Record definitions

How do machines make work easier?

- Triumph Physics Grade 10 pg. 100-102
- Digital devices
- Reference books
- Exercise books

- Oral questions - Written assignments - Group discussions

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Work done

By the end of the lesson, the learner should be able to:
- Explain work as force × distance
- Calculate work done using W = F × d
- Solve numerical problems on work

In groups, learners are guided to:
- Carry out activities to demonstrate work
- Push objects across the room
- Calculate work done in different scenarios

How do machines make work easier?

- Triumph Physics Grade 10 pg. 102-105
- Books
- Spring balance
- Ruler
- Calculator

- Practical assessment - Problem solving - Written tests

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Forms of energy

By the end of the lesson, the learner should be able to:
- Explain energy as ability to do work
- Identify different forms of energy
- Relate energy sources to renewable and non-renewable

In groups, learners are guided to:
- Discuss different forms of energy
- Give examples of energy sources
- Classify sources as renewable or non-renewable

How do machines make work easier?

- Triumph Physics Grade 10 pg. 105-106
- Digital devices
- Charts
- Reference books
- Pictures

- Oral questions - Written assignments - Observation