Measures of Safety from Tornadoes

Q.

The transfer of heat by the actual movement of particles in matter is called?

Q.

The warmth of room heater is because of radiation or convection??

Q. How does the story suggest the optimism helps to "endure the direst stress"?

Q.

Which of the following phenomenon occurs during daytime?

1. Land breeze

2. Neither land breeze nor sea breeze

3. Sea breeze

4. Both land breeze and sea breeze

Q.

How sea breeze is caused?

Q. Can use please make me understand the heat transfer by convection in refrigerators.... Got this doubt while reading my textbook

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Q. Why are freezers placed on the top of refrigerators?

Q.

identify the phenomenon occurring in the image below.

1. Convection

2. Radiation

3. Conduction

4. Diffusion

Q. What are convection currens ?

Q.

Which One Of The Following Places Is Unlikely To Be Affected By A Cyclone

1. I Chennai

2. Ii Mangaluru Mangalore

3. Iii Amritsar

4. Iv Puri

Q. Fill the missing word in the blank spaces in the following statements:
(a) Wind is $\underset{–}{}$ air.

(b) Near the earth’s surface $\underset{–}{}$ air rises up whereas $\underset{–}{}$ air comes down.

(c) Air moves from a region of $\underset{–}{}$ pressure to a region of $\underset{–}{}$ pressure.

Q. A is an event which is characterised by the presence of lightning and sound.

1. thunderstorm
2. hailstorm
3. cyclone
4. dust storm

Q. After a cyclone, we should boil water before drinking.

1. True

2. False

Q. Q1 Difference between convection radiation

Q.

Convection is the main source of heat transfer in the liquids.

Say True or False.

1. True

2. False

Q.

How land breeze is formed?

Q.

In coastal area, wind current moves from the sea towards the land during day, but during night it moves from land to the sea. Discuss the reason

Q.

What is meant by natural, forced and gravitional convection?

Q.

Which of the following statements is true about convection?

1. Convection occurs in cold liquids.

2. Convection requires a medium for transmission.

3. In solids, heat is transferred only by convection.

4. Heat flows from the cold end to the hot end in a substance.

Q.

Sushweta is sitting in her house looking at the sea through a window. She felt a cool breeze blowing across her face. Then, which of the following is true?

1. It is during the day.

2. It is during the night.

3. It can be either day or night.

4. Insufficient information

Q. Name the person who can predict when an object from space can fall onto the planet Earth.

1. Meteorologist
2. Geologist
3. Archaeologist
4. Cosmologist

Q. Convection occurs in

(a) solids only
(b) liquids only
(c) gases only
(d) liquids and gases only

Q. Identify the different names given for cyclones in different parts of the world.

1. Tropical cyclone
2. Typhoon
3. Hurricane

Q. Storms are created when the centre of low pressure develops with a system of high pressure surrounding it.

1. False
2. True

Q.

Choose the measures taken after cyclone.

1. Do not venture out unless informed by the authorities.

2. Never drink water without boiling.

3. Make more demand to the authorities.

4. Co-operate with the rescue efforts and do not make unnecessary demands.

Q.

Sushweta is sitting in her house looking at the sea through a window. She felt a cool breeze blowing across her face. Then, which of the following is true?

1. It is during the day.

2. It can be either day or night.

3. Insufficient information

4. It is during the night.

Q. A tropical cyclone is a type of storm formed in the tropical region.

1. False
2. True

Q.

Which of the following option correctly defines wind?

1. Humid air

2. Moving air

3. Cold air

4. Hot air

Q. Fill the missing word in the blank spaces in the following statements:
(a) Wind is $\underset{–}{}$ air.

(b) Near the earth’s surface $\underset{–}{}$ air rises up whereas $\underset{–}{}$ air comes down.

(c) Air moves from a region of $\underset{–}{}$ pressure to a region of $\underset{–}{}$ pressure.