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Thermal Properties of Matter, 8th Chapter, KIPS Notes for 9th Class are now ready to download in PDF directly or view online.

9th Class Physics Notes of KIPS (of all 9 Chapters) have been uploaded here on Top Study World you can download notes with ease in one place.

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Insulators, such as plastic, are objects that do not allow thermal energy to easily move through them.

Insulators, such as plastic, are objects that do not allow thermal energy to easily move through them. Even if the temperature of an insulator rises, it will not easily transmit thermal energy to where it is cooler. A good example of this is a cold drink in a plastic cup on a hot day; the cup will be warm to the touch, but the drink inside it will remain cool for a long time.

Convection is a method of transferring thermal energy through liquids and gases. It occurs when the warmer particles of a liquid or gas expand and rise above their cooler counterparts, which then sink back down to take their place. The rising and sinking of the particles creates currents in the gas or liquid, allowing thermal energy to be transferred from one place to another.

Most everyday objects are good conductors of heat and are therefore good at transferring thermal energy. Metals are particularly good at conducting heat; you can feel this if you hold one end of a metal rod that has been heated up in a fire. Because metals conduct heat so well, they can also be used as insulators by using them as casings for electrical wires. This protects people from being electrocuted by preventing heat from flowing from the wire's current into their body.

Do you belong to  Federal Board, Lahore Board, Faisalabad Board, Rawalpindi Board, Sargodha Board, Wah Board? Then these notes are helpful.

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Title: Thermal Properties of Matter

Chapter: 8th Chapter of 9th Class Physics

FileSize: 4.51 MB

FileType: PDF

Pages: 27

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### KIPS SHORT QUESTIONS OF CH# 8

Short Questions
1. Define heat
2. Define thermometry and temperature
3. Define internal energy.
4. Define thermal equilibrium
5. Define thermometer.·
6. Write down the conversions of thermometer scales.
7. Write down the conversions of thermometer scales.
8. Define heat capacity.·
9. Define latent heat of fusion.
10. Define latent heat of vaporization.
11. What is linear Expansion?
12. What is volume expansion?
13. Write down some consequences of thermal expansion.
14. Write down some applications of thermal expansion.
15. What do you know about bimetallic strip (thermostat)?
16. Write down some examples of expansions of solids.
17. While constructing bridges, one end of the beam is placed on rollers. Explain why?
18. What is the difference between the specific heated latent heat of a material?
19. Why temperature of a substance does not change while it is changing its state from solid. to liquid?

The Short Questions With Answers in the Below Images

### KIPS LONG QUESTIONS OF CH# 8

Long Questions
1. What is thermometer? Explain its different types.
2. What is specific heat? Explain with examples and derive the mathematical formula.
3. Explain the importance of large specific heat capacity of water.
4. Define heat capacity. Derive its mathematical formula and write down an activity to explain it.
5. Explain with a:n activity the change of state.
6. Define latent heat of fusion and write down its mathematical formula.
7. Define latent heat of vaporization. Write its mathematical formula.
8. Define evaporation. On what factor speed of evaporation depend? Explain.
9. What is thermal expansion? Explain on the basis of kinetic molecular theory.
10. What is linear Expansion? On What factors it depend on? Derive its mathematical formula.
11. What is volume expansion? On what factors it depend on? Drive its mathematical formula.
12. Write down the consequences of thermal expansion.
13. Write down the applications of thermal expansion.
14. Explain the thermal expansion of liquid.

Long Questions with Answers in the Below Images

### KIPS TEXTBOOK EXCERCISE OF CH# 8

MCQS

1. Water freezes at
2. Normal human body.temperature is
3. Mercury is used as thermometric material because it has
4. Which of the following material has large specific heat?
5. Which of the following material has a large value of temperature coefficient of linear expansion?
6. What will be the value of p for a solid for which a has a value of 2 x 10·5 K"1'!
7. A large water reservoir keeps the temperature of nearby Jand moderate due to:
8. Which of the following affects evaporati.on?

Short Questions

1. Why does heat flow from hot body to cold body'?
2. Define the term heat and temperature.
3. What is meant by internal energy of a body?
4. How docs heating affect the motion of molecules of a gas?
5. What is thermometer? Why mercury is preferred as thermometric substance?
6. Explain the volumetric thermal expansion.
7. Define specific heat. How would you find the specific heat of a solid?
8. Define and explain latent heat of fusion.
9. Define latent heat of vaporization.

The MCQs, and Short Questions of TextBook With Answers In the Below Images

### KIPS SOLVED NUMERICALS OF CH# 8

1. Temperature of the water in: beaker is 50° C. What is its value in Fahrenheit?
2. Normal human body temperature is 98.6° F. Convert it into Celsius and Kelvin scale
3. Calculate the increase in the length of an aluminum bar of 2m long when heated from 0° to 20° C. If the thermal coefficient of linear expansion of aluminum is 2.5 x 10 power 5 K-1
4. How much beat is required to increase the temperature of 0.5 kg of water from 10° C to 65° C.
5. An electric heater supplies heat at the rate of 1000 joules per second. How much time is required to raise the temperature of 200 g of water from 20° C to 90° C?
6. How much ice will melt by 50000 J of heat? Latent heat of fusion of ice = 336000 Jk·g 1
7. Find the quantity of heat needed to melt 100 g of ice at -10° C to 10° C.
8. How much heat is required to change 100 g of water at 100° C into steam?
9. Find the temperature of water after passing 5 of steam at 100° C through 500 g of water at l0° C.
10. A balloon contains 1.2 m3 of air at 15° C. J. Find its volume at 40° C. Thermal

The Numerical With Solution in the Below Images

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Top Study World: KIPS 9th Class Physics Notes for Chapter 8 (With PDF)
KIPS 9th Class Physics Notes for Chapter 8 (With PDF)
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