Heat - 3_1

How water gets heated? What is the first statement of the audio clip?

• When water is heated, the water near the flame gets hot.

• Hot water rises up.

• The cold water from the sides moves down towards the source of heat.

• This water also gets hot and rises and water from the sides moves down.

• This process continues till the whole water gets heated.

How water gets heated? What is the Second statement of the audio clip?

• This mode of heat transfer is known as convection.

• Hot water rises up.

• The cold water from the sides moves down towards the source of heat.

• This water also gets hot and rises and water from the sides moves down.

• This process continues till the whole water gets heated.

How water gets heated? What is the Third statement of the audio clip?

• This mode of heat transfer is known as convection.

• Hot water rises up.

• The cold water from the sides moves down towards the source of heat.

• This water also gets hot and rises and water from the sides moves down.

• This process continues till the whole water gets heated.

How water gets heated? What is the Fourth statement of the audio clip?

• This mode of heat transfer is known as convection.

• Hot water rises up.

• The cold water from the sides moves down towards the source of heat.

• This water also gets hot and rises and water from the sides moves down.

• This process continues till the whole water gets heated.

How water gets heated? What is the Fifth statement of the audio clip?

• This mode of heat transfer is known as convection.

• Hot water rises up.

• The cold water from the sides moves down towards the source of heat.

• This water also gets hot and rises and water from the sides moves down.

• This process continues till the whole water gets heated.

How water gets heated? What is the Sixth statement of the audio clip?

• This mode of heat transfer is known as convection.

• Hot water rises up.

• The cold water from the sides moves down towards the source of heat.

• This water also gets hot and rises and water from the sides moves down.

• This process continues till the whole water gets heated.

An iron ball at 40°C is dropped in a mug containing water at 40°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.

A wooden spoon is dipped in a cup of ice cream. Its other end

• becomes cold by the process of conduction.

• becomes cold by the process of convection.

• becomes cold by the process of radiation.

• does not become cold.

Stainless steel pans are usually provided with copper bottoms. The reason for this could be that

• copper bottom makes the pan more durable.

• such pans appear colourful.

• copper is a better conductor of heat than the stainless steel.

• copper is easier to clean than the stainless steel.

State the similarities and differences between the laboratory thermometer and the clinical thermometer. What is the first statement of the video clip? What is the First statement of the video clip?

• State Similarities and Differences between a Clinical and Laboratory Thermometer

• Every one of us knows about a factor called temperature; be it body temperature or atmospheric temperature

• So in order to measure this temperature; we use a device or an instrument called a thermometer.

• The name thermometer is derived from a Greek word thermos which means hot and metron which stands for a measure

• Modern thermometers are in digital form and claimed to give an accurate reading but earlier a glass capillary containing liquid mercury was used both for clinical and lab purposes.