(1) Define atmosphere and atmospheric pressure.(2) What do you mean by the state of motion?(3) On what factors does the effect of force depend ? (2024)

FAQs

What is the definition of atmosphere and atmospheric pressure? ›

(1) An atmosphere is a set of layers of gases present in our surrounding or other material body. These bodies are held in place by the gravity of that body. Atmospheric pressure is defined as force per unit area that is exterted by the weight of the air above that surface.

The atmosphere is a mixture of gases that surrounds the Earth. It helps make life possible by providing us with air to breathe, shielding us from harmful ultraviolet (UV) radiation coming from the Sun, trapping heat to warm the planet, and preventing extreme temperature differences between day and night.

That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes.

The atmospheric pressure at any given point depends on two factors: altitude (the height of a thing in relation to sea level) and temperature (the intensity of heat). This affects weather patterns across the world, as well as a person taking a mountain hike.

Atmospheric pressure is caused by the weight of air molecules above the atmosphere. The layer of air exerts a force on the surface of the earth. The force per unit area, by the atmosphere, on the surface of any object on the earth is called atmospheric pressure. At the sea level this pressure is equal to 101325 Nm-2.

Atmospheric pressure is the force exerted by gas molecules (that make up the atmosphere) on some area of the Earth's surface. The atmosphere exerts pressure on every solid or liquid surface it touches. Average sea level pressure=14.7 lbs/sq. in.

Examples of atmosphere in a Sentence

Experts have noticed changes in the atmosphere. Meteoroids burn up as they pass through Earth's atmosphere. The planets have different atmospheres. a country inn with lots of atmosphere The food was good but the restaurant has no atmosphere.

Atmosphere is the thin layer of air that surrounds the earth. It is made up of various gases such as oxygen, nitrogen, carbon dioxides, dust particles and water vapour. The gravitational force of the earth holds the atmosphere around it. It protects us from harmful rays and scorching heat of the sun.

The atmosphere. is the layer of gas that surrounds Earth. It is often called air. Other planets, and some of their larger moons, also have atmospheres. The atmosphere consists of several different gases.

Which statement best defines atmospheric pressure? ›

Atmospheric pressure is defined as the force per unit area exerted against a surface by the weight of the air above that surface.

Ink is filled in the pen because of atmospheric pressure. Wall lizards walk on the wall due to atmospheric pressure. The feet of lizards act like suction pads. the pressure inside the feet is reduced and more pressure is applied outside which enables lizards to walk on the wall easily.

The atmospheric pressure at a point is defined as the force acting normally on a unit area around that point, due to the total height of the air column of the atmosphere above it. That pressure is known as atmospheric pressure, also known as air pressure.

The highest sea-level air pressure ever recorded was 1083.8 mb (32.01 in. Hg) in Agata, Siberia on December 31, 1968; produced by a very cold, dense air mass. The lowest sea-level air pressure ever recorded was 870 mb (25.69 in. Hg) measured on October 12, 1979 in the eye of Typhoon Tip as it moved over Guam.

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.

Air pressure is the pressure exerted by the air around us while Atmospheric pressure is the pressure exerted by the atmosphere on the earth. Air pressure is measured by tore gauge while atmospheric pressure is measured using mercury barometer.

The clouds you see in the sky, the wind that is moving the trees or the flag in your school yard, even the sunshine you feel on your face—these are all a result of Earth's atmosphere. Earth's atmosphere stretches from the surface of the planet up to as far as 10,000 kilometers (6,214 miles) above.

The temperature of a place increases as the atmospheric pressure of that place rises. On the other hand, the temperature of a place decreases as the atmospheric pressure of the place falls. The temperature in the weather condition of a place increases as the heating effect of the air pressure rises to a high level.