Select Board & Class
name 10 examples of conductors & insulators.
Test solution Effect on red litmus paper Effect on blue litmus paper Inference
Lemon juice No change Red Acidic
Tap water No change No change Neutral
Detergent solution Blue No change Basic
Aerated Drink Blue No change Basic
Soap solution Blue No change Basic
Shampoo Blue No change Basic
Common Salt solution No change No change Neutral
Sugar solution No change No change Neutral
Vinegar No change Red Acidic
Baking soda solution Blue No change Basic
Milk of magnesia Blue No change Basic
Washing soda solution Blue No change Basic
Lime water Blue No change Basic
Test solution Effect on turmeric solution Remarks
Lemon juice No colour change Acidic
Orange juice No colour change Acidic
Vinegar No colour change Acidic
Milk of magnesia Red Basic
Baking soda Red Basic
Lime water Red Basic
Sugar No colour change Neutral
Common salt No colour change Neutral
What about sugar and common salt with turmeric solution? How do we conclude about the nature?
WHAT ARE GOOD AND BAD CONDUCTORS OF HEAT? EXPLAIN WITH EXAMPLES.
why we can't use laboratory thermometer to measuring human body temperature
why does a clinical thermometer have a kink?
WHY DO WE WEAR WOOLEN CLOTHES IN WINTER ?
what are 5 examples of bad conductors
Which of the following statements is incorrect regarding the process of conduction?
There should be no medium.
The objects should be solid in state.
Two objects should be in contact with each other.
The temperature of the objects should be different.
The process of heat transfer from the hotter end of an object to a colder end is called conduction. In solids, heat is generally transferred by the process of conduction. Therefore, it requires a medium.
The correct answer is A.
how?
can a clinical thermometer be used to measure the temperature of boiling water ? why ?
why are car radiators painted black?
Why are two thin blankets usually warmer then one thick blanket ?
Explain land breeze and sea breeze?
What is ice point and what is steam point?
name some bad conductors of heat
why are ventilators made close to the ceilings (give reasons)
precautions while reading a clinical thermometer?
Why do wet clothes dry faster in winter than in the rainy season?
why black colour umbrella is used in summer than a white one
How does the uneven heating of the Earth lead to the generation of wind currents?
There are two situations that lead to the generation of wind currents:
i. Uneven heating of the Equator and the Poles: The Equator receives the maximum amount of heat from Sun. The air in the region of the 0 − 30° latitude belt on either side of the Equator becomes warm and moves toward the Equator from both sides. The air near the latitude of 60° in both the hemispheres is warmer than the air near the Poles. Hence, the warm air around these latitude belts rises up and the cold air from the Polar Regions rushes in to occupy the empty space. Thus, the uneven heating of the Equator and the Poles causes the circulation of wind that leads to the generation of wind currents.
ii. Uneven heating of land and water: In the summer months, land heats up faster than the sea. The air above the land gets heated up and rises. This causes winds to blow from the sea to the land. In winters the direction of wind is reversed. Thus, it causes circulation of winds.
is this true ?? please answer fast !!
Why is water a bad conductor of heat ?
what is a clinical thermometer?
What are its features and functions?
value based questions
nitika's neighbour ,Mrs Sharma , is an old lady and lives alone .she doesn't keep well .nitikatakes some hot home -madevegetables soup made by her mother ,in a thermos flask for her.
1.why does nitika's mother use a thermos flask ?
2. what value can we learn from nitika?
Does radiation takes place in solids,liquids or gases?
what happens when a steel rod is heated? It will become....
A)Lighter B)Heavier C)A little longer D)A little shorter
WHY DOCTORS DIP THE THERMOMETER IN A LIQUID BEFORE USE? WHY IS IT KEPT UNDER THE TONGUE
why does a cement floor feel colder than a wooden floor?
why does an aluminium window frame feel colder to touch than a wooden frame?
Shopkeepers selling ice blocks usually cover with jute sacks? Why?
why do solid objects cool faster than liquid?
WHY THE THERMOMETER IS KEPT UNDER THE TONGUE?
describe an experiment to show convection current in liquid
Mud house are cool in summer and hot in winter . why ???????
why is well water warmer in winter and cooler in summer?
What happens to radiant heat when it falls on body?
Two test tubes full of water are heated -one from below and the other from near the top. In which case will the water heat up faster and why?
A short-note on Green House ?
Slabes of ice are covered with saw dust or gunny bags.Give reason.
Why can you not keep your palm above a burning candle but you can keep it on the sides of a candle flame?
Q4 why laboratory thermometer does not have a kink?
Q5 what precautions will you observe while using a clinical thermometer?
Q6 describe an experiment to show convection currents in a liquids.
why do we wear woollen clothes in winter & cotton clothes in summer?
is human body an insulator or conductor of heat
explain why gases expand more than liquis and solids
what is kink present in thermometer
why mercury does not fall or rise in a clinical themometer when taken out of the mouth?
what is the difference between conduction, convection and radiation?
In a room it is best to place a room heater on the floor but an air conditioner near the ceiling.why?
A wooden spoon is dipped in a cup of ice cream. Its other end
(a) becomes cold by the process of conduction.
(b) becomes cold by the process of convection.
(c) becomes cold by the process of radiation.
(d) does not become cold.
is the answer to this (d) does not become cold?
why wearing more layers of clothing during winter keeps us wrmer than wearing just one thickpiece of clothing?
WHY DO PEOPLE PREFER TO WEAR DARK CLOTHES IN WINTER AND LIGHT CLOTHES IN SUMMER?(HERE LIGHT MEANS LIGHT COLUORED CLOTHES FOR EG.WHITE)
Q: why are you advised to use an umbrella when you go out in the sun?
mode of heat transfer in
1) A paper cup full of hot soup lying on the table
2) cooking vegetables in a pan
what are the conditions required for conduction fo heat?
Why do we feel cold when our body is wet and we stand under a fan that is on?
What is white petrol?
What is the unit of heat energy in SI & FPS System ?
WHATS THE DIFFERENCE BETWEEN A DIGITAL AND A CLINICAL THERMOMETER?(ANY 3 POINTS)
difference between degree celcius and degree fahrenheit
a clinical thermometer has the range of 35 degree to 42 degree .why
what is conductor and insulator . give some examples ?
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Syllabus
name 10 examples of conductors & insulators.
Test solution Effect on red litmus paper Effect on blue litmus paper Inference
Lemon juice No change Red Acidic
Tap water No change No change Neutral
Detergent solution Blue No change Basic
Aerated Drink Blue No change Basic
Soap solution Blue No change Basic
Shampoo Blue No change Basic
Common Salt solution No change No change Neutral
Sugar solution No change No change Neutral
Vinegar No change Red Acidic
Baking soda solution Blue No change Basic
Milk of magnesia Blue No change Basic
Washing soda solution Blue No change Basic
Lime water Blue No change Basic
Test solution Effect on turmeric solution Remarks
Lemon juice No colour change Acidic
Orange juice No colour change Acidic
Vinegar No colour change Acidic
Milk of magnesia Red Basic
Baking soda Red Basic
Lime water Red Basic
Sugar No colour change Neutral
Common salt No colour change Neutral
What about sugar and common salt with turmeric solution? How do we conclude about the nature?
WHAT ARE GOOD AND BAD CONDUCTORS OF HEAT? EXPLAIN WITH EXAMPLES.
a)SOLIDS b)LIQUIDS
c)GASES
KINDLY CLEAR THE QUERY..
:-)
why we can't use laboratory thermometer to measuring human body temperature
why does a clinical thermometer have a kink?
WHY DO WE WEAR WOOLEN CLOTHES IN WINTER ?
what are 5 examples of bad conductors
Which of the following statements is incorrect regarding the process of conduction?
- A)
- B)
- C)
- D)
69.53% got it right!Answer:ASolution:There should be no medium.
The objects should be solid in state.
Two objects should be in contact with each other.
The temperature of the objects should be different.
The process of heat transfer from the hotter end of an object to a colder end is called conduction. In solids, heat is generally transferred by the process of conduction. Therefore, it requires a medium.
The correct answer is A.
how?
can a clinical thermometer be used to measure the temperature of boiling water ? why ?
why are car radiators painted black?
Why are two thin blankets usually warmer then one thick blanket ?
(i) What is the quantity of heat released per kg of water per 1C fall in temperature?
(ii) Calculate the heat energy released by water in the experiment in cooling from 70C to 45C.
(iii) Assuming that heat released by water is entirely used to raise the temperature of calorimeter 15C to 45C, calculate the specific heat capacity of copper. (Specific heat capacity of water = 4200 Jkg-1ºC-1.
Explain land breeze and sea breeze?
What is ice point and what is steam point?
name some bad conductors of heat
why are ventilators made close to the ceilings (give reasons)
precautions while reading a clinical thermometer?
Why do wet clothes dry faster in winter than in the rainy season?
why black colour umbrella is used in summer than a white one
How does the uneven heating of the Earth lead to the generation of wind currents?
There are two situations that lead to the generation of wind currents:
i. Uneven heating of the Equator and the Poles: The Equator receives the maximum amount of heat from Sun. The air in the region of the 0 − 30° latitude belt on either side of the Equator becomes warm and moves toward the Equator from both sides. The air near the latitude of 60° in both the hemispheres is warmer than the air near the Poles. Hence, the warm air around these latitude belts rises up and the cold air from the Polar Regions rushes in to occupy the empty space. Thus, the uneven heating of the Equator and the Poles causes the circulation of wind that leads to the generation of wind currents.
ii. Uneven heating of land and water: In the summer months, land heats up faster than the sea. The air above the land gets heated up and rises. This causes winds to blow from the sea to the land. In winters the direction of wind is reversed. Thus, it causes circulation of winds.
is this true ?? please answer fast !!
Why is water a bad conductor of heat ?
what is a clinical thermometer?
What are its features and functions?
value based questions
nitika's neighbour ,Mrs Sharma , is an old lady and lives alone .she doesn't keep well .nitikatakes some hot home -madevegetables soup made by her mother ,in a thermos flask for her.
1.why does nitika's mother use a thermos flask ?
2. what value can we learn from nitika?
Does radiation takes place in solids,liquids or gases?
What about sugar and common salt with turmeric solution? How do we conclude about the nature?
what happens when a steel rod is heated? It will become....
A)Lighter B)Heavier C)A little longer D)A little shorter
WHY DOCTORS DIP THE THERMOMETER IN A LIQUID BEFORE USE? WHY IS IT KEPT UNDER THE TONGUE
why does a cement floor feel colder than a wooden floor?
why does an aluminium window frame feel colder to touch than a wooden frame?
Shopkeepers selling ice blocks usually cover with jute sacks? Why?
why do solid objects cool faster than liquid?
WHY THE THERMOMETER IS KEPT UNDER THE TONGUE?
describe an experiment to show convection current in liquid
Mud house are cool in summer and hot in winter . why ???????
why is well water warmer in winter and cooler in summer?
What happens to radiant heat when it falls on body?
Two test tubes full of water are heated -one from below and the other from near the top. In which case will the water heat up faster and why?
A short-note on Green House ?
why is a clinical thermometor given a jerk before use ??
Slabes of ice are covered with saw dust or gunny bags.Give reason.
Why can you not keep your palm above a burning candle but you can keep it on the sides of a candle flame?
Q4 why laboratory thermometer does not have a kink?
Q5 what precautions will you observe while using a clinical thermometer?
Q6 describe an experiment to show convection currents in a liquids.
why do we wear woollen clothes in winter & cotton clothes in summer?
is human body an insulator or conductor of heat
explain why gases expand more than liquis and solids
what is kink present in thermometer
why mercury does not fall or rise in a clinical themometer when taken out of the mouth?
A) conduction B) electricity C) Radiation D) Convection
what is the difference between conduction, convection and radiation?
In a room it is best to place a room heater on the floor but an air conditioner near the ceiling.why?
A wooden spoon is dipped in a cup of ice cream. Its other end
(a) becomes cold by the process of conduction.
(b) becomes cold by the process of convection.
(c) becomes cold by the process of radiation.
(d) does not become cold.
is the answer to this (d) does not become cold?
why wearing more layers of clothing during winter keeps us wrmer than wearing just one thickpiece of clothing?
WHY DO PEOPLE PREFER TO WEAR DARK CLOTHES IN WINTER AND LIGHT CLOTHES IN SUMMER?(HERE LIGHT MEANS LIGHT COLUORED CLOTHES FOR EG.WHITE)
Q: why are you advised to use an umbrella when you go out in the sun?
mode of heat transfer in
1) A paper cup full of hot soup lying on the table
2) cooking vegetables in a pan
what are the conditions required for conduction fo heat?
Why do we feel cold when our body is wet and we stand under a fan that is on?
What is white petrol?
What is the unit of heat energy in SI & FPS System ?
WHATS THE DIFFERENCE BETWEEN A DIGITAL AND A CLINICAL THERMOMETER?(ANY 3 POINTS)
difference between degree celcius and degree fahrenheit
a clinical thermometer has the range of 35 degree to 42 degree .why
what is conductor and insulator . give some examples ?