Why Earth is called the blue planet? (1) Because of two-thirds surface covered by water (2) Because of water laden clouds in the atmosphere (3) Because of pollution in the atmosphere (4) None of these

Why Earth is called the blue planet? (1) Because of two-thirds surface covered by water (2) Because of water laden clouds in the atmosphere (3) Because of pollution in the atmosphere (4) None of these
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(1) Because of two-thirds surface covered by water Explanation: Earth is called the blue planet because two-thirds of its surface is covered by water.
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Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Description : Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Last Answer : (3) Reflect back the heat given by earth Explanation: It is because the night side of Earth will radiate infra-red radiation (heat) back into space. When there is cloud cover, the clouds act like a blanket and trap the heat close to the ground just like a blanket traps heat close to our body.

Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Description : Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Last Answer : reflect back the heat given by earth

What planet is dry rocky and covered in toxic clouds?

Description : What planet is dry rocky and covered in toxic clouds?

Last Answer : Vennus

Why the Earth is having its own atmosphere? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth

Description : Why the Earth is having its own atmosphere? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth

Last Answer : (3) Gravity Explanation: Due to gravity, our Earth has an atmosphere, Gravity causes the gases to be held close to the earth instead of escaping into outer space.

Clouds float in the atmosphere because of their – (1) low pressure (2) low density (3) low viscosity (4) low temperature

Description : Clouds float in the atmosphere because of their – (1) low pressure (2) low density (3) low viscosity (4) low temperature

Last Answer : (2) low density Explanation: The key to why clouds float is that the density of the same volume of cloud material is less than the density of the same amount of dry air. Just as oil floats on water ... it is less dense, clouds float on air because the moist air in clouds is less dense than dry air.

The clouds float in the atmosphere because of their low: (1) temperature (2) velocity (3) pressure (4) density

Description : The clouds float in the atmosphere because of their low: (1) temperature (2) velocity (3) pressure (4) density

Last Answer : (4) density Explanation: Clouds generally form, survive and grow in air that is moving upward. Rising air expands as the pressure on it decreases, and that expansion into thinner, high-altitude air causes cooling.

Clouds float in the atmosphere because of their (1) low pressure (2) low density (3) low viscosity (4) low temperature

Description : Clouds float in the atmosphere because of their (1) low pressure (2) low density (3) low viscosity (4) low temperature

Last Answer : low density

Pick out the wrong statement (A) The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone (B) Mesosphere is characterised by very low atmospheric pressure and low temperature (C) Troposphere is a dusty zone containing water vapor and clouds (D) The radio waves used in the long distance radio communication are reflected back to earth by stratosphere

Description : Pick out the wrong statement (A) The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone (B) Mesosphere is characterised by very low atmospheric ... radio waves used in the long distance radio communication are reflected back to earth by stratosphere

Last Answer : (D) The radio waves used in the long distance radio communication are reflected back to earth by stratosphere

Why the Earth is having its own atmosphere ? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth

Description : Why the Earth is having its own atmosphere ? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth

Last Answer : (3) Gravity Explanation: Due to gravity, our Earth has an atmosphere, Gravity causes the gases to be held close to the earth instead of escaping into outer space.

Why the Earth is having its own atmosphere? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth

Description : Why the Earth is having its own atmosphere? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth

Last Answer : (3) Gravity

Why the Earth is having its own atmosphere ? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth

Description : Why the Earth is having its own atmosphere ? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth

Last Answer : Gravity

A person can jump higher on the moon's surface than on the earth because – (1) the moon's surface is rough (2) the acceleration due to gravity in moon is smaller than that on the earth. (3) the moon is cooler than earth (4) the moon has no atmosphere

Description : A person can jump higher on the moon's surface than on the earth because – (1) the moon's surface is rough (2) the acceleration due to gravity in moon is smaller than that on the earth. (3) the moon is cooler than earth (4) the moon has no atmosphere

Last Answer : (2) the acceleration due to gravity in moon is smaller than that on the earth. Explanation: The acceleration due to the gravitational field of moon (g' = 1.62631 ms-2) is one-sixth of the acceleration due ... earth. It is due to this reason; a man can jump six times higher on moon than on earth.

A person can jump higher on the moon’s surface than on the earth because : (1) the moon’s surface is rough (2) the acceleration due to gravity in moon is smaller than that on the earth. (3) the moon is cooler than earth (4) the moon has no atmosphere

Description : A person can jump higher on the moon’s surface than on the earth because : (1) the moon’s surface is rough (2) the acceleration due to gravity in moon is smaller than that on the earth. (3) the moon is cooler than earth (4) the moon has no atmosphere

Last Answer : the acceleration due to gravity in moon is smaller than that on the earth.

Clouds float in atmosphere, because of

Description : Clouds float in atmosphere, because of

Last Answer : less density

Earth is also known as – (1) Black planet (2) Green planet (3) Blue planet (4) Yellow planet

Description : Earth is also known as – (1) Black planet (2) Green planet (3) Blue planet (4) Yellow planet

Last Answer : (3) Blue planet Explanation: The Earth is referred to as “the blue planet” because of the abundance of water on the planet.

The sky appears blue because – (1) All colours interfere to produce blue (2) In white light, the blue component dominates (3) The atmosphere scatters blue colour more than the others (4) It is actually blue

Description : The sky appears blue because – (1) All colours interfere to produce blue (2) In white light, the blue component dominates (3) The atmosphere scatters blue colour more than the others (4) It is actually blue

Last Answer : (3) The atmosphere scatters blue colour more than the others Explanation: Diffuse sky radiation is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by ... the atmosphere (approximately 25% of the incident radiation when the sun is high in the Sky.

The sky appears blue because (1) all colours interfere to produce blue (2) in white light, the blue component dominates (3) the atmosphere scatters blue colour more than the others (4) it is actually blue

Description : The sky appears blue because (1) all colours interfere to produce blue (2) in white light, the blue component dominates (3) the atmosphere scatters blue colour more than the others (4) it is actually blue

Last Answer : the atmosphere scatters blue colour more than the others

Pick out the wrong statement. (A) The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere (B) Stratosphere is rich in ozone and is located just above the troposphere (C) Troposphere is a turbulent dusty zone containing much of water vapor and clouds (D) The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms

Description : Pick out the wrong statement. (A) The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere (B) ... ) The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms

Last Answer : (A) The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere

The atmospheric air is held to the Earth by – (1) gravity (2) winds (3) clouds (4) rotation of the Earth

Description : The atmospheric air is held to the Earth by – (1) gravity (2) winds (3) clouds (4) rotation of the Earth

Last Answer : (1) gravity Explanation: The atmosphere is an ocean of air held in place by gravity, extending from the surface to an altitude of hundreds of kilometers, the edge of space. Energy from the sun heating the air and land surface to different degrees, drives atmospheric circulation.

The atmospheric air is held to the Earth by : (1) gravity (2) winds (3) clouds (4) rotation of the Earth

Description : The atmospheric air is held to the Earth by : (1) gravity (2) winds (3) clouds (4) rotation of the Earth

Last Answer : gravity

Water vapour turns into clouds in the atmosphere when: A. It rains B. The temperature rise C. Dew point is reached (Answer) D. Evaporation takes place

Description : Water vapour turns into clouds in the atmosphere when: A. It rains B. The temperature rise C. Dew point is reached (Answer) D. Evaporation takes place

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What if our planet had ten times it's current diameter, and was always darkened by low hanging clouds and perpetually gritty skies?

Description : What if our planet had ten times it's current diameter, and was always darkened by low hanging clouds and perpetually gritty skies?

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The planet having the clouds of Sulphuric acid?

Description : The planet having the clouds of Sulphuric acid?

Last Answer : Venus

What compound is a common component of air pollution, but is essential in the upper atmosphere to protect life on earth?

Description : What compound is a common component of air pollution, but is essential in the upper atmosphere to protect life on earth?

Last Answer : ANSWER: OZONE

Recall homework 2 in which we calculated emissivity for a single layer atmosphere. If the atmosphere were to suddenly become a perfect emitter (i.e., if e = 1 rather than e = 0.8), what would happen to the surface temperature? (a) The surface temperature would be lower. (b) The surface temperature would be the same. (c) The surface temperature would be higher. (d) There would be initial warming followed by cooling as the planet moves toward radiative equilibrium.

Description : Recall homework 2 in which we calculated emissivity for a single layer atmosphere. If the atmosphere were to suddenly become a perfect emitter (i.e., if e = 1 rather than e = 0.8), ... . (d) There would be initial warming followed by cooling as the planet moves toward radiative equilibrium.

Last Answer : (c) The surface temperature would be higher.

What is the name given to the term that defines the proportion of the incident solar radiation which is diffusely reflected from the atmosphere and surface of the planet back into outer space?

Description : What is the name given to the term that defines the proportion of the incident solar radiation which is diffusely reflected from the atmosphere and surface of the planet back into outer space?

Last Answer : ANSWER: ALBEDO

What is the transition from atmosphere to clouds?

Description : What is the transition from atmosphere to clouds?

Last Answer : What is the answer ?

What Clouds are formed very high in the atmosphere?

Description : What Clouds are formed very high in the atmosphere?

Last Answer : Need answer

Why clouds are float in atmosphere

Description : Why clouds are float in atmosphere

Last Answer : Low density

Why do The clouds float in the atmosphere?

Description : Why do The clouds float in the atmosphere?

Last Answer : Because of their low temperature

You have discovered a new celestial body. It has a thick atmosphere and it produces powerful cosmic winds and, when observed, the clouds obscure the body. You have determined it is this type of star. A. Wolf-Rayet star (Answer) B. Red supergiant C. Stellar storm D. Pulsar

Description : You have discovered a new celestial body. It has a thick atmosphere and it produces powerful cosmic winds and, when observed, the clouds obscure the body. You have determined it is this type of star. A. Wolf-Rayet star (Answer) B. Red supergiant C. Stellar storm D. Pulsar

Last Answer : A. Wolf-Rayet star (Answer)

The cloudy nights are warmer compared to clear nights (without clouds) during winter days. This is because: (A) clouds radiate heat towards the earth (B) clouds prevent cold wave from the sky, descend on earth (C) clouds prevent escaping of the heat radiation from the earth (D) clouds being at great heights from earth absorb heat from the sun and send towards the earth

Description : The cloudy nights are warmer compared to clear nights (without clouds) during winter days. This is because: (A) clouds radiate heat towards the earth (B) clouds prevent cold wave from the sky, ... (D) clouds being at great heights from earth absorb heat from the sun and send towards the earth

Last Answer : (C) clouds prevent escaping of the heat radiation from the earth

If the planet Mars was able to sustain an Earth-like atmosphere, what kinds of temperatures and life could it support?

Description : If the planet Mars was able to sustain an Earth-like atmosphere, what kinds of temperatures and life could it support?

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If Earth had no greenhouse gases, the planet would be ? (a) Too hot to support life. (b) Cooler but still able to support life. (c) Too cold to support life. EDIT: COMPLEX LIFE (d) It depends on the species of aerosol in the GHG-free atmosphere

Description : If Earth had no greenhouse gases, the planet would be ? (a) Too hot to support life. (b) Cooler but still able to support life. (c) Too cold to support life. EDIT: COMPLEX LIFE (d) It depends on the species of aerosol in the GHG-free atmosphere

Last Answer : Too cold to support life. EDIT: COMPLEX LIFE

Laura weighs 50 Newtons and pushes against a stationary brick wall that weighs 1,000 Newtons. Her arm is two-thirds of a meter long. According to the laws of physics, how much work does she do?

Description : Laura weighs 50 Newtons and pushes against a stationary brick wall that weighs 1,000 Newtons. Her arm is two-thirds of a meter long. According to the laws of physics, how much work does she do? 

Last Answer : ANSWER: NONE or ZERO

A spring with a force constant k is cut into thirds. The force constant of each of the new springs is w) k x) 3k y) (1/3)k (read: one third k) z) 9k

Description : A spring with a force constant k is cut into thirds. The force constant of each of the new springs is w) k x) 3k y) (1/3)k (read: one third k) z) 9k 

Last Answer : ANSWER: X -- 3k

A considerable part of the harmful ultraviolet radiation of the sun does not reach the surface of earth. This is because in the upper atmosphere, ther

Description : A considerable part of the harmful ultraviolet radiation of the sun does not reach the surface of earth. This is because in the upper atmosphere, ther

Last Answer : A considerable part of the harmful ultraviolet radiation of the sun does not reach the surface of earth. This is because ... ` C. `O_(3)` D. `NH_(3)`

A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. (A) Hydrogen (B) Carbon dioxide (C) Ozone (D) None of these

Description : A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. (A) Hydrogen (B) Carbon dioxide (C) Ozone (D) None of these

Last Answer : (C) Ozone

What would happen if gravity suddenly doubled on Earth, but the mass of the atmosphere did not change? (a) Surface pressure would stay the same but the density would increase. (b) Surface pressure would increase but the density would stay the same. (c) Surface pressure and density would both increase. (d) Surface density and pressure would stay the same because the atmosphere is in hydrostatic balance.

Description : What would happen if gravity suddenly doubled on Earth, but the mass of the atmosphere did not change? (a) Surface pressure would stay the same but the density would increase. (b) Surface ... (d) Surface density and pressure would stay the same because the atmosphere is in hydrostatic balance.

Last Answer : Surface pressure and density would both increase.

Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by – (1) Carbon dioxide (2) Ammonia (3) Chlorine (4) Ozone

Description : Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by – (1) Carbon dioxide (2) Ammonia (3) Chlorine (4) Ozone

Last Answer : (4) Ozone Explanation: The ozone layer absorbs 97-99% of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which potentially damages exposed life forms on Earth. Ozone ... Earth's atmosphere. In total, ozone makes up only 0.6 parts per million of the atmosphere.

Ultra violet radiations of the Sun do not reach the earth because, earth’s atmosphere is surrounded by (1) Carbon dioxide (2) Ammonia (3) Chlorine (4) Ozone

Description : Ultra violet radiations of the Sun do not reach the earth because, earth’s atmosphere is surrounded by (1) Carbon dioxide (2) Ammonia (3) Chlorine (4) Ozone

Last Answer : Ozone

Which of the following is called “Blue Planet” ? (1) Saturn (2) Earth (3) Jupiter (4) Mars

Description : Which of the following is called “Blue Planet” ? (1) Saturn (2) Earth (3) Jupiter (4) Mars

Last Answer : Earth

The type of radiative scattering commonly associated with the atmosphere and the reason the sky is blue is called what?

Description : The type of radiative scattering commonly associated with the atmosphere and the reason the sky is blue is called what?  

Last Answer : ANSWER: RAYLEIGH SCATTERING

Percentage of surface of Earth which is covered by water is A. 70% B. 85% C. 90% D. 60%

Description : Percentage of surface of Earth which is covered by water is A. 70% B. 85% C. 90% D. 60%

Last Answer : A. 70%

Percentage of surface of Earth which is covered by water is A. 70% B. 85% C. 90% D. 60%

Description : Percentage of surface of Earth which is covered by water is A. 70% B. 85% C. 90% D. 60%

Last Answer : A. 70%

Percentage of surface of Earth which is covered by water is A. 70% B. 85% C. 90% D. 60%

Description : Percentage of surface of Earth which is covered by water is A. 70% B. 85% C. 90% D. 60%

Last Answer : A. 70%

What would you do if aliens attacked our pretty blue planet earth on 1/1/ 2012?

Description : What would you do if aliens attacked our pretty blue planet earth on 1/1/ 2012?

Last Answer : Most of us would, although Ron Paul and others would say it is a secret attempt to get us into a single planetary government.

Earth is also known as – (1) Orange planet (2) Green planet (3) Blue planet (4) Yellow planet

Description : Earth is also known as – (1) Orange planet (2) Green planet (3) Blue planet (4) Yellow planet

Last Answer : (3) Blue planet Explanation: The Earth is referred to as “the blue planet” because of the abundance of water on the planet.

The blue colour of sky is due to – (1) reflection of sunlight (2) refraction of sunlight (3) scattering of shorter wave-lengths of sunlight in the atmosphere (4) scattering of longer wave-lengths of sunlight in the atmosphere

Description : The blue colour of sky is due to – (1) reflection of sunlight (2) refraction of sunlight (3) scattering of shorter wave-lengths of sunlight in the atmosphere (4) scattering of longer wave-lengths of sunlight in the atmosphere

Last Answer : (3) scattering of shorter wave-lengths of sunlight in the atmosphere Explanation: The blue colour of the sky is caused by the scattering of sunlight off the molecules of the atmosphere. This scattering, ... to the direction of the sun's light is predominantly in the blue end of the spectrum.

In the absence of the earth's atmosphere, sky would appear – (1) blue (2) deep red (3) white (4) black

Description : In the absence of the earth's atmosphere, sky would appear – (1) blue (2) deep red (3) white (4) black

Last Answer : (4) black Explanation: Sky appears blue because the tiny particles of the earth's atmosphere scatter the blue colour (short wavelength) of the sunlight more dominantly than other wavelengths. A blue ... in the absence of earth's atmosphere because there would be no particles to scatter the light.