SC-7 4 & 5

Which one of the following is a reliable measure of Heat?

• Hotness
• Coldness
• Temperature
• None of these

Name the device which is used to measure the hotness or coldness of an object.

• Picometer
• Barometer
• Manometer
• Thermometer

Which one is filled in the bulb of a thermometer?

• Mercury
• Lead
• Copper
• Silver

Heat always flows

• from a colder object to a hotter object
• from a hotter object to a colder object
• in both the directions
• heat never flows from one object to other

Conduction is the method of transfer of heat in

• liquids
• solids
• gases
• vacuum

Heat from the sun reaches to us by

• conduction
• convection
• radiation
• electrification

Out of these gases which one is used in fire extinguishers

• Carbon dioxide
• Oxygen
• Nitrogen
• Ozone

The heat is transferred directly from its source to another object without a medium. Which of the following is the method of transfer?

• Conduction
• Convection
• Radiation
• Transformation

Land breeze blows during -

• Day
• Night
• Both Day and Night
• None of these

Light coloured cloths are preferred during

• Summer
• Winter
• Monsoon
• None of these