Convection

Q. Land breeze blows during the ______ time.

1. morning
2. afternoon
3. evening
4. night

Q. Transfer of heat in liquids takes place predominantly by:

1. Conduction
2. Convection
3. Radiation
4. Both convection and radiation

Q. If a piece of metal is heated to temperature $\theta$ and then allowed to cool in a room which is at temperature ${\theta }_0$. The graph between the temperature T of the metal and time t will be closed to

1. 
2. 
3. 
4. 

Q.

Does land cool at a slower or faster rate than water? Give one reason.

Q. Explain convection in daily ??????

Q. Can we boil water inside the earth satellite by convection

1. Yes
2. No
3. Nothing can be said
4. In complete information is given

Q. The cool air moving towards the sea from the land is called:

1. Sea breeze
2. Land breeze
3. Moon breeze
4. Night breeze

Q. Which of the following cools down faster?

1. Land
2. Water
3. Both cool down at the same rate
4. Varies from region to region on Earth

Q.

In convection mode of transfer of heat :

1. Particles of medium vibrate without leaving their position.

2. Particles of medium vibrate without leaving their position.

3. Particles of medium move

4. Particles of medium plays no role

Q. Why do windows in cold countries have double glazing?

1. For the conduction of heat
2. For the insulation of heat
3. For the radiation of heat
4. For the convection of heat

Q. Shweta is sitting in her house, looking out at the sea through a window. She starts to feel a cool breeze blowing across her face. Which of the following could be true about this situation?

1. It is most likely the night.
2. It is most likely the daytime.
3. It could be either day or night.
4. It is definitely morning or evening.

Q.

Can the movement of air be caused by temperature or pressure differences ?

Q. Which one of the following represents the correct dimensions of the coefficient of viscosity?

1. $\left[M{L}^{-1}{T}^{-1}\right]$
2. $\left[ML{T}^{-1}\right]$
3. $\left[M{L}^{-2}{T}^{-2}\right]$
4. $\left[M{L}^{-1}{T}^{-2}\right]$

Q. In which of the following mediums can convection take place?

1. Iron rod
2. Candle
3. Air
4. Wooden rod