Quick Answer: What Is Fog For Kids?

Why there is no fog in hilly areas?

In hilly areas, on a calm and cloudless night, the land surface on the hills cools.

This in turn cools the air directly above it.

Pooling of cold air means that fog can form more quickly, and persist for longer, in valleys than over flat terrain..

Is it mist or fog?

Fog and mist differ by how far you can see through them. Fog is when you can see less than 1,000 meters away, and if you can see further than 1,000 metres, we call it mist.

What is fog in simple words?

Fog is thick mist. It may appear on land or sea and it usually lowers visibility (makes it hard to see very far). When fog forms at high levels it creates a cloud called stratus. When the air chills, moisture will turn to fog. Fog is made up of tiny water droplets or, in very cold conditions, ice crystals.

What is difference between dew and fog?

Fog is a cloud that appears near the ground or touches the ground. Mist is a thin fog that appears near the ground. Dew is deposit of water drops that is formed on cold surfaces by condensation of water vapors in the air. …

Can fog be predicted?

Whether driving or flying, fog results in travel delays and in some cases cancellations. Forecasting fog can be difficult, but its proper prediction is extremely important. The proper prediction of fog can have people better prepared to avoid delays and being late for work.

Is a fog a cloud?

Clouds can form at many different altitudes. They can be as high as 12 miles above sea level or as low as the ground. Fog is a kind of cloud that touches the ground. Fog forms when the air near the ground cools enough to turn its water vapor into liquid water or ice.

What is fog answer?

In summary, fog is condensed water vapor that normally occurs close to the ground. Fog happens when warmer air interacts with cold air. The cold air can hold less water vapor than the warm air, so the water vapor condenses into liquid water to form fog.

What are the 4 types of fog?

There are several different types of fog, including radiation fog, advection fog, valley fog, and freezing fog. Radiation fog forms in the evening when heat absorbed by the Earth’s surface during the day is radiated into the air.

What is fog one sentence?

1) The fog cleared away and the full moon appeared. 2) All flights have been cancelled because of fog. 3) Thick patchy fog and irresponsible driving were to blame. 4) Ghostly shapes loomed out of the fog. 5) The fog rolled in, and a grey shroud covered the city.

Why is fog dangerous?

Fog consists of water droplets suspended in the air; driving through heavy fog is a bit like flying through a cloud. … As a result, fog is often heaviest at night and in the morning. If possible, wait until mid- or late afternoon, by which point the fog is likely to have burned off.

How dew and fog are formed?

Dew is a natural form of water, formed as water vapor condenses. … This forces water vapor in the air around cooling objects to condense. When condensation happens, small water droplets form—dew. … Fog forms when the difference between air temperature and dew point is less than 2.5 °C (4.5 °F).

Is fog a dew?

There are two main types of fog, and the Northwest gets both varieties. And they both are directly related to the dew point. The dew point is the temperature at which the air becomes 100% saturated. At that point, the air condenses into water droplets, which we see as fog.

How do you get fog?

Basically, fog forms when warm air meets colder air. When this happens, water vapor in the air — a gas — is cooled enough for the gas to turn to a liquid in the form of tiny water droplets. This process is called “condensation.” … Advection fog occurs when warm air moves in over a cooler land surface.

What is the example of fog?

The definition of a fog is a mist of water vapor that is low to the ground, a mist of another liquid, or a state of confusion or blurred vision. An example of a fog is the cool gray cloud that covers San Francisco. An example of a fog is the little cloud of insect spray over a corn field.

Does fog clear smoke?

“The smoke rides over the fog,” said Dr. John Balmes of UC-San Francisco, who studies the respiratory health effects of air pollutants. “Mist keeps a lid on the fine particles, up higher, from coming down and getting into our lungs,” he said. “Foggy days are very good for protecting us.”