Pressure, Winds, Storms, and Cyclones

Microscope

Stethoscope

Satellites and Radars

Telescope

External air pressure is zero

Internal air pressure decreases

Internal air pressure increases

The rubber becomes stronger

Coastal areas

Deserts

Inside a deep cave

Mountain peaks

Width

Height

Shape

Color

The paper strip moves downwards because the moving air exerts a downward force.

The paper strip remains stationary as air pressure is the same on both sides.

The paper strip gets lifted upwards because the high-speed air creates a region of low pressure above it.

The paper strip curls towards the mouth due to the force of suction.

It expands because the pressure inside increases

It gets crushed because the steam inside condenses, reducing internal pressure

It stays the same

It melts due to the temperature change

The pressure difference is small

The pressure difference is large

There is no pressure difference

The temperature is exactly $0^\circ C$

The depth of the point from the free surface.

The density of the liquid.

The acceleration due to gravity.

The shape of the container.

Increase the speed of the truck.

Decrease the friction with the road.

Distribute the heavy load over a larger area to reduce pressure on the road.

Provide better fuel efficiency.

The ground to the sky.

The sky to the ground.

One mountain to another.

The sea to the land only.

Liquid

Solid

Air

Glue

Thermometer

Barometer

Odometer

Speedometer

Cold, sinks

Warm, rises

Cold, rises

Warm, sinks

No

Only when it is pure oxygen

Yes

Only in the liquid state

Air has no mass and therefore cannot be displaced by water.

Air occupies space and exerts pressure, preventing the water from entering.

Water is more compressible than air under normal conditions.

Air pressure is only exerted in the upward direction inside the bottle.

The creation of a vacuum inside the syringe that pulls the plunger outward.

The friction between the rubber plunger and the glass walls of the syringe.

The air molecules being forced into a smaller space, increasing the internal pressure.

The temperature of the air inside the syringe decreasing as it is compressed.

Pressure in Bulb A decreases, and air moves from Bulb B to Bulb A.

Pressure in Bulb A increases, and air moves from Bulb A to Bulb B.

Pressure in both bulbs remains the same, but the air in Bulb A becomes heavier.

Air does not move because the bulbs are part of a closed system.

$400 \text{ Pa}$

$100 \text{ Pa}$

$0.01 \text{ Pa}$

$202 \text{ Pa}$

West to East

East to West

North-South directly between the Poles and the Equator

There would be no wind at all

The temperature increases, causing the gas inside to expand.

The external atmospheric pressure decreases, allowing the internal gas pressure to expand the balloon.

The gravity decreases, making the balloon lighter.

The balloon absorbs more sunlight at higher altitudes.

low

high

neutral

extreme

Sea breeze

Land breeze

Monsoon

Cyclone

Under a tall tree

In a car with closed windows

On top of a hill

In an open field

Kilograms

Liters

km/h

Degrees Celsius

Cool air is less dense and enters through the ventilators, pushing the stale warm air out through the windows.

Warm air becomes lighter and rises to escape through the ventilators, creating a pressure drop that draws cooler air in through the windows.

Air pressure is significantly higher near the ceiling, which forces fresh outdoor air to be sucked in through the ventilators.

The height difference creates a vacuum effect where air only moves if the temperature outside is exactly $0^{\circ}C$.

From Jar 1 to Jar 2, because air moves from low-pressure areas to high-pressure areas.

From Jar 1 to Jar 2, because the heat in Jar 1 increases the air speed and pulls the smoke.

From Jar 2 to Jar 1, because the cooling of air in Jar 2 creates a region of higher pressure compared to Jar 1.

The smoke will stay in the middle because temperature differences do not create enough pressure to move air horizontally.

Air moves from high-pressure areas to low-pressure areas

Air moves from low-pressure areas to high-pressure areas

Air moves only from the poles to the equator

Air moves only from the equator to the poles

It provides the heat needed to evaporate the ocean water.

It creates the 'twist' or 'spin' necessary to organize the storm into a spiral.

It pushes the cyclone from the land back toward the sea.

It increases the gravitational pull on the clouds.

The chemical inside is a refrigerant.

The rapid expansion of the compressed gas into the lower pressure atmosphere leads to a drop in temperature.

The high-speed wind created by the spray absorbs heat from the air.

The metal can is kept in a cold environment.

The pressure decreases because the air becomes 'lighter'.

The pressure increases because the molecules move faster and collide with more force.

The pressure remains the same.

The pressure becomes negative.

High pressure

Low pressure

Moderate pressure

Zero pressure

It increases

It decreases

It remains the same

It becomes double

Weather forecasting

Digestion

Plant growth only

Studying stars

The ball goes in easily

The ball is pushed out

The ball turns into liquid

The bottle breaks

Air will move very fast

Air will move slowly

There will be no net movement of air

Air will move in a circular motion

They are inhaling air

The high-speed air they blew over the cap created a low-pressure area

The cap is magnetic

The cap is heavier than air

Air has weight

High-speed wind outside creates low pressure

Air is a mixture of gases

Warm air rises up

The pressure will increase due to the weight of the clouds.

The pressure will drop significantly.

The pressure will remain constant because of the rain.

The pressure will become negative.

The spin creates different air speeds on either side of the ball, leading to a pressure difference that pushes the ball sideways.

The ball is heavier on one side due to the polish.

The bowler's hand exerts a magnetic force.

The air pressure is higher on the side where the air moves faster.

$P_1 > P_2$

$P_1 < P_2$

$P_1 = P_2$

$P_1 + V_1 = P_2 + V_2$

Microscopes

Satellites and Radars

Telescopes

Submarines

Very high

Very low

Moderate

Normal

North Pole

South Pole

Equator

Arctic Circle

Dust

Water vapor

Smoke

Leaves

The rubber tires of the car provide a perfect insulation barrier that prevents lightning from reaching the ground.

The glass windows of the car act as an electrical filter that neutralizes the high voltage of the lightning.

The metallic body of the car provides a low-resistance path for the lightning to travel around the exterior to the ground.

The engine of the car creates a localized magnetic field that repels electrical discharges away from the cabin.

Metal is a good conductor of electricity

Water in the pipes can freeze

The pipes might attract wind

It can cause a short circuit in the TV

Clockwise towards the center

Anticlockwise towards the center

Straight from North to South

Directly upwards from the center

Sharp points minimize the surface area exposed to rain, preventing the metal from rusting and losing its conductivity.

The pointed tips increase the air resistance around the building, creating a 'buffer zone' that pushes the lightning bolt away.

The high concentration of charges at the sharp points ionizes the nearby air, creating a path to slowly neutralize the cloud's charge.

Pointed ends are specifically shaped to absorb the sonic energy from thunder, preventing structural vibrations in the building.

The air is thinner at higher altitudes

There is less friction from the Earth's surface and obstacles (like trees/buildings)

Gravity is weaker at higher altitudes

The clouds push the air faster

To stop the lightning from occurring

To convert the electrical energy into light energy safely

To provide a zero-resistance path for the electrical charge to reach the ground safely

To store the electricity for later use in the building

Indian Railways

Indian Meteorological Department

Indian Postal Service

Indian Oil Corporation

Land

Water surface

Sand

Trees

Drought

Earthquake

Cyclone

Avalanche

Uniform

Uneven

Surface

Deep

Because the temperature rises so high that it causes immediate dehydration.

Because the calm weather suggests the storm is over, but it is followed by the violent second half of the storm.

Because Phase 2 is when the most lightning strikes occur despite the lack of wind.

Because the air pressure at Phase 2 is the highest ever recorded on Earth.

The storm gains more energy from the solid ground.

The cyclone turns into a high-pressure system immediately.

The storm weakens as it is cut off from its moisture source.

The eye of the cyclone expands to cover the entire continent.

The air sinks directly back into the 'Eye' to create rain.

The air flows outward, away from the center of the storm.

The air becomes extremely dense and stops the storm's rotation.

The air turns into a solid layer of ice that blocks the sun.

Newton's Third Law

Law of Conservation of Angular Momentum

Pascal's Law

Ohm's Law

500-1000 km/h

15-30 km/h

1-2 km/h

It does not move; it remains stationary

January to March

May to June and October to November

July to August

December to February