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![Samacheer Kalvi solutions for Science - Term 2 [English] Class 6 TN Board chapter 1 - Heat - Shaalaa.com](/images/science-term-2-english-class-6-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Science - Term 2 [English] Class 6 TN Board chapter 1 - Heat")
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Solutions for Chapter 1: Heat
Below listed, you can find solutions for Chapter 1 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science - Term 2 [English] Class 6 TN Board.
Samacheer Kalvi solutions for Science - Term 2 [English] Class 6 TN Board 1 Heat Evaluation [Pages 14 - 15]
Choose the appropriate answer
When an object is heated, the molecules that make up the object
begin to move faster
lose energy
become heavier
become lighter
The unit of heat is
newton
joule
volt
celsius
One litre of water at 30o C is mixed with one litre of water at 50o C. The temperature of the mixture will be
80o C
More than 50°C but less than 80o C
20o C
around 40o C
An iron ball at 50°C is dropped in a mug containing water at 50o C. The heat will
flow from iron ball to water.
not fl ow from iron ball to water or from water to iron ball.
flow from water to iron ball.
increase the temperature of both.
Fill in the blanks
Heat flows from a ______ body to a _____ body.
The hotness of the object is determined by its ______.
Solids ______ on heating and ______ on cooling.
Two bodies are said to be in the state of thermal ____ if there is no transfer of heat taking place.
True or False. If False, give the correct statement
Heat is a kind of energy that flows from a hot body to a cold body.
True
False
Steam is formed when heat is released from water.
True
False
Thermal expansion is always a nuisance.
True
False
Borosilicate glass do not expand much on being heated.
True
False
The unit of heat and temperature are the same.
True
False
Give reason for the following
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
Give reason for the following
The electric wire which sag in summer become straight in winter.
Rivet is heated before fixing in hole to join two metal plates.
Match the following
| 1. | Heat | 0o C |
| 2. | Temperature | 100o C |
| 3. | Thermal Equilibrium | kelvin |
| 4. | Ice cube | No heat flow |
| 5. | Boiling water | joule |
Analogy
Heat : Joule :: Temperature : _____
Analogy
Ice cube : 0o C :: Boiling water :______
Analogy
Total Kinetic Energy of molecules: Heat :: Average Kinetic Energy : ______.
Give very short answer
Make a list of electrical equipments at home which we get heat from.
What is temperature?
What is thermal expansion?
What do you understand by thermal equilibrium?
Give short answer
What difference do you think heating the solid will make in their molecules?
Distinguish between heat and temperature.
Answer in detail
Explain thermal expansion with suitable examples.
Questions based on Higher Order Thinking Skills
When a window is accidentally left open on a winter night, will you feel uncomfortable because the cold is getting in, or because the heat is escaping from the room?
Suppose your normal body temperature were lower than what it is. How would the sensation of hot and cold change?
If you heat a circular disk with a hole, what change do you expect in the diameter of the hole? Remember that the effect of heating increases the separation between any pair of particles.
Solutions for 1: Heat
Samacheer Kalvi solutions for Science - Term 2 [English] Class 6 TN Board chapter 1 - Heat
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Concepts covered in Science - Term 2 [English] Class 6 TN Board chapter 1 Heat are Heat and Its Unit, Sources of Heat, Heat Exchange, The Temperature and a Thermometer, Flow of Heat, Expansion of Substances (Thermal Expansion), Expansion of Solids, Numerical Problems of Heat, Heat and Temperature.
Using Samacheer Kalvi Science - Term 2 [English] Class 6 TN Board solutions Heat exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Science - Term 2 [English] Class 6 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
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