0
Clouds
A cloud is a visible body of very fine water droplets or ice particles suspended in the atmosphere at altitudes up to several miles above sea level. They are generally produced by the condensation of water vapor. Other clouds, less commonly seen, are composed of smokes or dusts.
10,186 Questions
Why does warm air go to the top?
Warm air rises because it is less dense than cold air. As warm air is heated, its molecules spread apart and become lighter, causing it to float above denser, cooler air. This creates convection currents, where warmer air continuously rises while cooler air sinks.
A land breeze is a breeze blowing toward the sea from the land. Is is common at night, when it is also called a katabatic wind, generated as the land cools faster than the sea at night, so air over the the land falls to give higher pressure and the air over the sea rises relatively. The wind is then only at low level. The air moves in the opposite direction high up.
How does air above a heated surface move?
When air is warmed up, its molecules move faster and faster and as a result they move further from each other. They still have the same mass, but they now occupy a larger volume. This means that its density is smaller.
The opposite when air is cooled off. The molecules slow down, get closer together, occupy a smaller volume and therefore its density is bigger.
When air is warmed up, it goes up. Once it's up there, is cools off and goes back down. Near the heated surface the air gets warmed up again, goes up, cools down, goes back down, and again and again.
That's called a convection cell.
No this is not true. This is a frontal cloud formation, therefore, it produces frontal precipitation. Frontal is formed when two air masses of different tempeartures meet. Orographic precipitation occurs when a cloud travels up a mountain.
The uneven heating of the earth produces pressure belts. these belts occur at about every 30 degrees latitude.
The rotation of the Earth flings the bulk of the air creating an area of low pressure belt in this region.
Some clouds are darker because they are rain clouds. After the air condenses to its dew point, the water vapor that is no longer needed will form a liquid form of water, which in this case would be a cloud. The cloud would be full of water. When it can no longer hold the water, it starts to rain.
The cloud is white when the sun shines on it. It becomes dark when the sky is dark, and then the thunder and rain comes.
How does a barometer measure humidity?
It doesn't, it measures atmospheric pressure. Humidity is measured with a hygrometer.
* Some long case mercurial barometers, used in the home, may have a separate hygrometer included on the instrument.
What are the four types of fronts?
Cold Front-When a fast moving cold air mass runs into a slowly moving warm air mass
Warm Front-A fast moving warm air mass collides with a slow moving cold air mass
Stationary Front-When a cold and a warm air mass meet, but neither one has enough force to move the other
Occluded Front-When a warm air was is caught between two cold air masses
Why does soduim ascetate turn into ice?
Firstly, when sodium acetate (CH3COONa) solidifies, it does not form "ice". It just becomes solid. This happens when the sodium acetate is heated to about 100oC, then cooled below its freezing point. When a foreign substance with the same crystal structure as sodium acetate is introduced, or a nucleation centre is provided, the sodium acetate will warm up to its freezing point and freeze at its (supposed to be) freezing point.
What is the altitude of cumulus clouds?
Cumulus clouds typically form at altitudes between 1,000 to 8,000 meters (3,300 to 26,000 feet) above ground level. The exact altitude can vary depending on factors such as local weather conditions and the time of day.
No, hailstones are not round. They come in different shapes and sizes becasue they are so rough.
What does saturation have to do with dew point?
The dew point is a saturation point, but a saturation point may not be a dew point. That is, a saturation point has a broader definition -- more general application. Sometimes you can interchange the terms without confusing the reader.
=================================
What is the exmples of liquid to gas?
steam hits a cold surface makes a liquid. also known as condensation
Several factors influence water resistivity. Some of the most important are 1) the concentration of ions in the water; 2) the mobility of the ions in the water (smaller ionic radius ions tend to decrease water resistivity more than larger ionic radius ions); 3) the oxidation state of the ions; and 4) the temperature of the water.
What clouds are dark and so full of water that sunlight cant pass through them?
Cumulonimbus clouds are dark and heavily laden with water that sunlight cannot easily penetrate through them. These clouds are associated with thunderstorms and can produce heavy rainfall, lightning, and strong winds.
What is the change of state from a liquid to a gas called?
Wine glasses on a budget are very common. Major retailers like Wal-Mart or online sources such as amazon offer a large selection.
How do different types of clouds form?
Clouds form when water vapor in the air condenses into tiny water droplets or ice crystals around microscopic particles, such as dust or ash. The type of cloud that forms depends on various factors like temperature, humidity, and air pressure. Different cloud types include cumulus, stratus, cirrus, and nimbus clouds, each with distinct characteristics and formations.
What causes stronger winds to occur?
Stronger winds are typically caused by differences in air pressure. When there is a large contrast in pressure between two areas, air will move from high pressure to low pressure, resulting in strong winds. Other factors like temperature gradients, the Earth's rotation, and topography can also influence wind strength.
Why does 20 degree Celsius water feel colder than 20 degree air?
Water has a higher "specific heat" than air, meaning that heat will conduct away far better through water than it will through air. It is exactly the same temperature as the air around it (assuming it has been sitting there for a while), but it FEELS colder if you touch it.
The human body needs to be able to dissipate some heat, just because we burn calories and create heat through our normal activity. Air at about 75 degrees gives us plenty of cooling ability without cooling us too much. Since water has a higher specific heat and conducts better than air it pulls heat out of our bodies far more efficiently, causing us to loose body heat at a higher rate. If we're only sticking our finger in the room temperature water, it just feels cool. If we climb into a swimming pool of "room temperature" water, we'll feel quite uncomfortable.
Any pushing force measured per unit area is termed as pressure. So the force may be the weight of a column of liquid or gas. Or the change in momentum of impinging particles per unit time on the plane. This will be equally balanced by the pressure exerted by the column of mercury. Hence the pressure is given in the familiar unit of height of mercury such as 760 mm of mercury(Hg) for normal atmospheric pressure.
--------------------------------------
The SI unit for pressure is pascal (N/m2), with the symbol Pa.
1 Pa = 10e-5 bar = 1,0197.10e-5 at; 1 mmHg has 133,322387415 pascals.
