Science 1 Marks Question

Night.

Thunderstorms can occur year-round and at all hours. But they are most likely to happen in the spring and summer months and during the afternoon and evening hours.

By satellites and radars.

When train moves with high speed it creates region of lower pressure. This low pressure pushes man towards the train.

A windstorm is just a storm with high winds or violent but with little or no rain.

The main cause of wind movement is uneven Heating.
wind currents are generated due to the uneven heating on the earth (i.e. between the equator and the poles and of land and water).

True.
On heating the air expands and occupies more space. When the same thing occupies more space, then it becomes lighter.

Winds are generated due to uneven heating on the earth.

Factors like wind speed, wind direction, temperature and humidity contribute to the development of cyclones.

Holes are made in huge hoardings to reduce air pressure causing it to flutter or blown away.

The function of thick skin and lot of fat in Penguin is to protect them from cold. because Penguins live in cold region.

Steel being a good conductor of electricity allows a clear passage of the energy of lightening to the ground without any damage. Therefore, they do not need lightning rods.

The swift movement of the falling water along with the rising warm air producing sound, lightning, heavy rain and strong wind is called thunderstorm.

The heat causes air to expand and occupies more space. It becomes lighter. That’s why, warm air is lighter than the cold air.

Hail is created when small water droplets are caught in the updraft of a thunderstorm.

A land breeze occurs at night when the land cools faster than the sea. In this case, it is air above the warmer surface water that is heated and rises, pulling in air from the cooler land surface.

A monsoon is a seasonal wind, found especially in Asia that reverses direction between summer and winter and often brings heavy rains.

Wind currents are generated due to uneven heating on the earth. It may be between equator and pole and between land and water.

Chandigarh is unlikely to be affected by a cyclone because it is not near the sea or ocean.

The moving air is called Wind.

On a warm summer day along the coast, the differential heating of land and sea leads to the development of local winds called sea breezes.

The low pressure around the warm water vapour spirals, i.e., the centre of a cyclone is calm and is called the eye of the storm.

Anemometer is used to measure the speed of wind.

An anemometer is a device for measuring wind speed, and is a common weather station instrument.

Hugo, Katrina, Rita, Hud-Hud and Phailin are the various types of cyclones that occurred in the past.

Filling air in a football: A football filled tight with air, takes a shape of a sphere which is very difficult to press and can even support the weight of a player.

Air around us exerts Pressure.
it is because of this pressure that the leaves of trees or banners flutter when the air moves.

High speed winds and air pressure difference can cause cyclones.

Warm air is lighter and it rises up.

Region where the air pressure is high to the region where the pressure is low.

A thunderstorm is a storm with lightning and thunder. Its produced by a cumulonimbus cloud, usually producing gusty winds, heavy rain and sometimes hail.

False.
If wind blow from land to the ocean, then it is night time because at night, the water cools down more slowly than the land. So, the cool wind from the land moves towards the ocean.

The scale was created by the British naval commander Sir Francis Beaufort around 1806.

An Indian ocean is mainly responsible to bring rain bearing monsoon winds to Kerala coast in June every year.

When a balloon is brought near a candle the molecules heat up and the balloon starts expanding. When the balloon no longer can expand it bursts.

The Beaufort scale is an empirical measure for the intensity of the weather based mainly on wind power.

It is because the winds would have blown in the North-South direction either from North to South or from South to North. A change in direction is however caused by the rotation of the earth.

From sun.

Near the earth’s surface warm air rises up whereas cold air comes down.

Wind is moving air.

A Mesocyclones is a rotating vortex of air within a supercell thunderstorm. Mesocyclones do not always produce tornadoes.

Yes, despite their small size, all thunderstorms are dangerous. Every thunderstorm produces lightning, which kills more people each year than tornadoes.

High speed wind can cause cyclone in regions of Low.
A very low-pressure system, with very high speed winds revolving around it, forms a cyclone.

False.
A very low pressure system, with very high speed winds revolving around it, forms a cyclone.

India, Malaysia, Indonesia, Brazil etc.

Yes, because the smoke will move in the direction of the wind.

In winter the sea become warmer quickly than the land. So In winter monsoon blows from land to sea.

High speed wind passing over the umbrella creates low pressure above the umbrella. Therefore, the pressure below the umbrella upturns it.

Winds are generated due to uneven heating on the earth.

False.
the whole coast line of India is vulnerable to cyclones, particularly the east coast.

Air Expands on heating.

As we know that smoke is the combination of hot airs and hot air becomes light weight with respect to cold air. Thus, it always rises up.

Hurricane and typhoon are the other names of cyclone.

The bicycle tube bursts when it is overfilled with air.

Air moves from a region of high pressure to a region of low pressure.