HEAT 🔥 ❄️ (DIWAN ACADEMY)

What is conduction?

Which method of heat transfer does not require a medium?

True or False: Convection occurs in solids.

Fill in the blank: __________ is the transfer of heat in fluids caused by the movement of the fluid itself.

What type of thermometer uses mercury to measure temperature?

True or False: A digital thermometer can provide instant readings.

Fill in the blank: The method of heat transfer that involves the emission of energy in the form of waves is called __________.

Which type of thermometer is used to measure the temperature of an object without direct contact?

What is the main cause of convection currents in the atmosphere?

True or False: All materials conduct heat equally well.

Fill in the blank: In a __________, hot air rises and cold air sinks, creating a cycle.

What is the primary function of a thermometer?

True or False: Heat always moves from a hotter object to a cooler object.

Fill in the blank: __________ is an example of heat transfer through conduction.

Which type of thermometer is commonly used in clinical settings?

True or False: The greater the temperature difference between two objects, the faster heat transfer occurs.

Fill in the blank: The process of heat transfer that occurs in liquids and gases is known as __________.

True or False: Heat can be transferred through a vacuum.

Fill in the blank: The temperature at which a substance changes from solid to liquid is called __________.

Which of the following is an example of radiation?