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.
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
Description : Clouds float in atmosphere, because of
Last Answer : less density
Description : Why clouds are float in atmosphere
Last Answer : Low density
Description : Why do The clouds float in the atmosphere?
Last Answer : Because of their low temperature
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
Description : 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
Last Answer : (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.
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.
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
Description : Ice float on water because its density is (1) more than water (2) less than water (3) zero (4) same as water
Last Answer : (2) less than water Explanation: Archimedes' Principle states that for an object to floaton water, it must displace an equal amount of water. Ice floats because it is about 9% less dense than liquid water.
Description : Hot air balloons float in air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.
Last Answer : Hot air balloons float in air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.
Description : I wear a huge dark cloak, not unlike the one of a wizard, I am the opposite of warm, I don't walk-I float, I prefer to be sad, not happy. I appear in clouds, not in the sky, I can only ... path. I am a foul creature, amongst the foulest, you might call me a light extinguisher. What am I? -Riddles
Last Answer : A dementor from Harry Potter.
Description : How do clouds float in the sky ?
Last Answer : Sunlight and wind evaporate a lot of water from the sea into the sky. That water vapor rises with the wind in the sky. The concentration of water vapor at one time is in the air at that ... much smaller. These tiny particles get bigger and bigger one by one. Then they start floating like clouds.
Description : What happens when the tiny liquid or ice droplets of clouds get too heavy to float?
Last Answer : it snow or rain due the cloud not able to hold any more... hopedthis helped you
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.
Description : The velocity of sound in moist air is more than in dry air because the moist air has (1) less density than city air (2) less pressure than dry air (3) more pressure than dry air (4) more density than dry air
Last Answer : (1) less density than city air Explanation: The density of dry air is more than that of moist air (when moisture is removed from air, its density. increases). The speed of sound in a medium is inversely ... root of its density. Therefore, the speed of sound in moist air is more than that in dry air.
Description : The velocity of sound in moist air is more than in dry air because the moist air has (1) less density than dry air. (2) less pressure than dry air. (3) more pressure than dry air. (4) more density than dry air.
Last Answer : less density than dry air.
Description : Which one among the following doesn't have any effect on velocity of sound? (1) Pressure (2) Temperature (3) Humidity (4) Density
Last Answer : (3) Humidity Explanation: The speed of sound varies depending on the temperature, pressure, and density of the medium through which the sound waves travel. In most of the cases, it is density ... (or other material). The density of air is affected by atmospheric pressure, temperature, and altitude.
Description : Velocity of sound in air does not depend on – (1) Density of air (2) Temperature of air (3) Pressure of air (4) Humidity of air
Last Answer : (3) Pressure of air Explanation: Assuming air to be an ideal gas, the speed of sound depends on temperature only. As air temperature increases, so does the speed of sound and vice versa. ... air pressure because the air pressure and air density are proportional to each other at the same temperature.
Description : Which one among the following doesn't have any effect on velocity of sound ? (1) Pressure (2) Temperature (3) Humidity (4) Density
Last Answer : Humidity
Description : Velocity of sound in air does not depend on (1) Density of air (2) Temperature of air (3) Pressure of air (4) Humidity of air
Last Answer : Pressure of air
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
Last Answer : C. Dew point is reached (Answer)
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
Description : The density of seawater is greater than that of fresh water. A boat will float: w) Higher in fresh water than in seawater x) Lower in fresh water than in seawater y) At the same level in both z) Any of the above, depending upon its shape
Last Answer : ANSWER: X -- LOWER IN FRESH WATER THAN IN SEAWATER
Description : A steel ball floats on mercury because (a) mercury does not allow any metallic ball to sink in it (b) mercury is also a metal in the liquid form (c) the density of mercury is higher than that of steel (d) a steel ball can be made to float on any liquid by suitable adjustment
Last Answer : Ans:(c)
Description : A large ship can float but a steel needle sinks because of (a) Viscosity (b) Surface tension (c) Density (d) None of these
Last Answer : Ans:(d)
Description : Height of atmosphere, if atmospheric density is 1.29 kg m-3 and atmospheric pressure is 101 kPa, is A. 7839.4 m B. 7829.4 m C. 7849.4 m D. 7859.4 m
Last Answer : 7829.4 m
Description : Match List I (Layers of Atmosphere) and List II (Characteristics) and select the correct answer using the code given below. L ist I L i st I I (L ayer of (Char acter ist ics) At mospher e) A. Ionosphere I. Contains Ozone B. ... D-III (3) A-II, B-III, C-I, D-IV (4) A-III, B-I, C-IV, D-II
Last Answer : 2) A-II, B-I, C-IV, D-III
Description : The density of a gas is maximum at – (1) Low temperature, low pressure (2) Low temperature, high pressure (3) High temperature, low pressure (4) High temperature, high pressure
Last Answer : (2) Low temperature, high pressure Explanation: The density of gases depends upon the temperature. The higher the temperature, the more the molecules are spread out and the lower the density. The result is that warm gases rise and cool gases sink.
Description : The density of a gas is maximum at (1) Low temperature, low pressure (2) Low temperature, high pressure (3) High temperature, low pressure (4) High temperature, high pressure
Last Answer : Low temperature, high pressure
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.
Description : What is the transition from atmosphere to clouds?
Last Answer : What is the answer ?
Description : What Clouds are formed very high in the atmosphere?
Last Answer : Need answer
Description : Why the Earth is having its own atmosphere ? (1) Winds (2) Clouds (3) Gravity (4) Rotation of the Earth
Last Answer : (3) Gravity
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)
Last Answer : Gravity
Description : The earth’s atmosphere is divided into layers based on the vertical profile of -----? A. Air pressure B. Air temperature (Answer) C. Air density D. Wind speed
Last Answer : B. Air temperature (Answer)
Description : Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature (A) Rate of reaction is very low ... (C) Space velocity of gas is very low resulting in decreased conversion (D) None of these
Last Answer : (A) Rate of reaction is very low
Description : How does the high/low temperatures, the barometric pressure, and the relative humidity influence what kinds of clouds are out?
Last Answer : answer:Yikes. The formation of clouds is an application of the First Law of Thermodynamics. According to the First Law, a change in the internal energy of a system can be due to the ... for air under these conditions is the moist adiabatic lapse rate and is approximately -5oC per kilometer.
Description : On average, how do low clouds affect the surface temperature (compared to a clear sky)? (a) Low clouds warm the surface by increasing the greenhouse effect (b) Low clouds cool the surface by ... surface by increasing the albedo (d) It depends on whether they are comprised of ice or liquid water
Last Answer : (c) Low clouds cool the surface by increasing the albedo
Description : 1. Which is nuclear-capable submarine-launched ballistic missile? 2. Medicine for high blood pressure is obtained from which species? 3. Howmany times has National Emergency been declared? 4. Because ... is associated with a savanna climate? 20. Who was a contemporary of Alexander, the Great?
Last Answer : Answer : 1. Sagarika 2. Rauwolffia species 3. Three times 4. Low humidity 5. Lord Pethick Lawrence 6. Aldehyde 7. Rakesh Nath 8. Reserve Bank of India 9. Absolute humidity 10. Indica 11. If ... 15. Mauryan King Ashoka 16. Dadabhai Naoroji 17. 54 18. Jatropha curcas 19. Scrub 20. Chandragupt Maurya
Description : The best instrument for measuring the velocity of a stream flow is (A) Pitot tube (B) Price's current meter (C) Surface float (D) Sub-surface float
Last Answer : Answer: Option B
Description : Can scientists use the measure of density to tell if something will float. False True?
Last Answer : True.
Description : Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the (A) Density separation (B) Differential wettability (C) Size (D) Volatile matter content
Last Answer : (A) Density separation
Description : In case of a Rotameter, the density of the float material is __________ that of the liquid it replaces. (A) More than (B) Less than (C) Equal to (D) Either (A) or (B)
Last Answer : (A) More than
Description : A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal (A) Density of metal can't be determined (B) ... as water (C) Metal will float in water (D) Metal is twice as dense as unknown fluid
Last Answer : (A) Density of metal can't be determined
Description : At zero degrees Celsius and one atmosphere (STP), the volume of a gas is 1,000 milliliters. If the temperature is increased to 25 degrees Celsius and the pressure is doubled, what is the new volume of the gas? w) 546 milliliters x) 500 milliliters y) 1,000 milliliters z) 273 milliliters
Last Answer : ANSWER: W -- 546 MILLILITERS
Description : At one atmosphere, a cylinder with movable piston contains 2,000 milliliters of gas. If the pressure is increased to 5 atmospheres and the temperature remains unchanged, what is the new volume of the gas? w) 10,000 milliliters x) 400 milliliters y) 1,000 milliliters z) 4,000 milliliters
Last Answer : ANSWER: X -- 400 MILLILITERS