6th Standard Syllabus & Materials
6th Standard
Tamilnadu 6th Standard Tamil இயல் 3 - எல்லாரும் இன்புற - பெயர்ச்சொல் Important Questions And Answers Study Material - QB365 Set B
NEW6th Standard
Tamilnadu 6th Standard Tamil இயல் 3 - எல்லாரும் இன்புற - பெயர்ச்சொல் Important Questions And Answers Study Material - QB365 Set A
NEW6th Standard
Tamilnadu 6th Standard Tamil இயல் 2 - கூடித் தொழில் செய் - சுட்டு எழுத்துகள், வினா எழுத்துகள் Important Questions And Answers Study Material - QB365 Set B
NEW6th Standard
Tamilnadu 6th Standard Tamil இயல் 2 - கூடித் தொழில் செய் - சுட்டு எழுத்துகள், வினா எழுத்துகள் Important Questions And Answers Study Material - QB365 Set A
NEW6th Standard
Tamilnadu 6th Standard Tamil பருவம் 1 - இயல் 1 - மொழி -தமிழ்த்தேன் - இன்பத்தமிழ் Important Questions And Answers Study Material - QB365
NEW6th Standard
Tamilnadu 6th Standard Social Science T3 - குடிமையியல் - உள்ளாட்சி அமைப்பு - ஊரகமும் நகர்ப்புறமும் Important Questions And Answers Study Material - QB365 Set B
Published on: 13/12/2019
Heat
Download Tamil Nadu 6th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Two bodies are said to be in the state of thermal________ if there is no transfer of heat taking place.
2.
Solids_________ on heating and______ on cooling.
3.
The SI unit of temperature is ________.
4.
The hotness of the object is determined by its_________.
5.
Heat flows from a ____________ body to a ____________ body.
6.
The unit of heat and temperature are the same.
7.
Borosilicate glass do not expand much on being heated.
8.
Thermal expansion is always a nuisance.
9.
Steam is formed when heat is released from water.
10.
Heat is a kind of energy that flows from a hot body to a cold body.
11.
Rivet is heated before fixing in hole to join two metal plates.
12.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
13.
What do you understand by thermal equilibrium?
14.
What is thermal expansion?
15.
What is temperature?
16.
Make a list of electrical equipments at home which we get heat from.
17.
Distinguish between heat and temperature.
18.
What difference do you think heating the solid will make in their molecules ?
19.
Explain thermal expansion with suitable examples.
20.
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.
21.
Suppose your normal body temperature were lower than what it is. How would the sensation of hot and cold change?
22.
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?
23.
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 flow from iron ball to water or from water to iron ball
flow from water to iron ball
increase the temperature of both
24.
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
25.
The unit of heat is
newton
joule
volt
celsius
26.
When an object is heated, the molecules that make up the object
begin to move faster
lose energy
become heavier
become lighter
1.
( )
thermal equilibrium
2.
( )
expand, contract
3.
( )
kelvin
4.
( )
temperature.
5.
( )
Lower temperature, hlgher temperature
6.
False - Correct statement: The unit of heat and temperature are not the same. (or) The unit of heat and temperature are different
7.
True
8.
False - Correct statement: Thermal expansion is always not a nuisance
9.
False - Correct statement: Steam is formed when heat is absorbed front water
10.
True
11.
When heated, the Rivet will expand and when cooled, the Rivet will contract and hold the two plates tightly together.
12.
The Borosilicate glass do not expand much on being heated and therefore they do not crack.
13.
Thermal equilibrium exists when two objects in thermal contact no longer affect each other's temperature.
14.
The expansion of a substance on heating is called, the thermal expansion of that substance.
15.
(i) The measurement of warmness or coldness of a substance is known as its Temperature.
(ii) SI unit of temperature is kelvin
16.
(i) The Water heater
(ii) Iron box
(iii) Electric kettle etc.
17.
| HEAT | TEMPERATURE |
| i) Heat is an energy | The measurement of warmness or coldness of a substance |
| ii) Heat not only depends on the temperature of the substance but also depends on how many molecules are there in the object | Temperature is related to how fast the atoms or molecules move or vibrate within the substance. |
| iii) Heat measures the total kinetic energy of molecules | Temperature measures the average kinetic energy of molecules |
| iv) SI unit of heat is Joule | SI unit of temperature is kelvin |
18.
The molecules in the solid move faster and vibrate when heating. Spread apart and occupy more space. So solid expands when heated.
19.
The expansion of substance on heating is called, the thermal expansion of that substance
(i) Gaps are left in between rails while laying railway track :
So that there is enough margin for the tracks to expand and contract due to the temperature changes. If that gap is not left then the tracks might have enormous stress in them while expanding due to heat, which can damage them.
(ii) Gaps are left in between two joints of a concrete bridge:
Thermal expansion takes place due to the increase in the kinetic energy of the constituent molecules as they are heated. Thermal expansion is the reason we leave some gaps between section of h concrete bridge.
20.
Many of us expect that diameter of hole will decrease, but actually as the diameter of ring increases diameter of hole will also increase.
21.
We feel hot because the heat is transferred from atmosphere to your body. Heat energy flows from higher temperature to lower temperature.
22.
The heat is escaping from the room because the room temperature is higherthan atmosphere. Heat energy flows from higher temperature to lower temperature.
23.
(b)
not flow from iron ball to water or from water to iron ball
24.
(d)
around 40o C
25.
(b)
joule
26.
(a)
begin to move faster
6th Standard Syllabus & Materials
6th Standard
Tamilnadu 6th Standard Social Science T3 - குடிமையியல் - உள்ளாட்சி அமைப்பு - ஊரகமும் நகர்ப்புறமும் Important Questions And Answers Study Material - QB365 Set A
NEW6th Standard
Tamilnadu 6th Standard Social Science T3 - குடிமையியல் - மக்களாட்சி Important Questions And Answers Study Material - QB365 Set B
NEW6th Standard
Tamilnadu 6th Standard Social Science T3 - குடிமையியல் - மக்களாட்சி Important Questions And Answers Study Material - QB365 Set A
NEW6th Standard
Tamilnadu 6th Standard Social Science T3 - புவியியல் - பேரிடரைப் புரிந்து கொள்ளுதல் Important Questions And Answers Study Material - QB365 Set B
Tamilnadu Stateboard 6th Standard Subjects
Tamilnadu Stateboard Standards
