Class 7 Physics Quiz #1

Heat is a form of ___

• Force

• Energy

• Power

When we rub our hands mechanical energy changes into _

• Heat energy

• Thermal energy

• both

If an electric bulb is lit, it will get hot after few hours because

• Electric energy will change into heat energy

• Electric energy will change into light energy

An object will have more heat energy if its kinetic energy is

• more

• less

• normal

The liquid (Mercury ) rises in thermometer if, kept in hot water bath because

• Liquid expands on heating

• Liquid contracts on heating

• Mercury moves if its disturbed

The sensation of hotness or coldness is caused by ..................... ENERGY

• magnetic

• electrical

• heat

• mechanical

Temperature of an object is measured with a/an .....................

• barometer

• lactometer

• thermometer

• electrometer

In Celsius scale, the lower fixed point is ....................

• 100

• 32

• 212

• 0

What is the picture showing ?

• Sea breeze

• Land breeze

• Wind breeze

• Pressure Breeze

Heat effects are-

• Chemical change ,Change in temperature

• Evaporation , Change in temperature

• Change in dimension , Distillation