WHAT IS FROST ?
If you have ever walked on a patch of grass early in the morning heading to school and as your walking, all you can hear is a distinct sound of crunching, as if you are walking on eggshells. Well if so, this is the sound of you breaking a tiny coating of ice that has built up over night, after temperatures dropped below freezing point. This is called frost.
HOW DOES FROST FORM ?
When the weather is cold, the temperature of the ground can often drop to below freezing point. This causes the water on the surface (Dew) of the ground to freeze and turn to ice, which we call frost. The ice-crystals in frost form a delicate, hair-like shape that can make frost appear spiky and fluffy.
WHAT IS DEW ?
Dew is tiny drops of water that forms on cool surfaces in the morning or evening, when atmospheric vapor condenses. An example of condenses-when you have a hot shower in you bathroom, the window and mirrors steam up, making everything damp.
TYPES OF FROST !!!
GROUND FROST –
Ground frost occurs when ice forms on the ground, objects or trees. This happens when the outdoor surfaces have a temperature below the freezing point of water.
AIR FROST –
An air frost occurs when the air temperature falls below freezing point of water at a height of at least one meter above the ground.
GRASS FROST –
Grass frost is an unofficial ground frost that occurs on surfaces such as roads and on concrete. Grass frost can unexpectedly occur in late spring or summer, which can be a gardeners nightmare.
HOAR FROST –
Also known as radiation frost, hoar frost refers to white ice crystals deposited to objects exposed to the free air, such as grass blades, tree branches or leaves. They form on a cold night by direct condensation of water vapor to ice, when air is brought to its frost point by cooling.
WINDOW FROST –
In freezing weather, frost can form on the inside of an ice-cold window. If the moisture in the air touches the glass pane, it freezes into ice crystals. As the crystals moves across the glass pane, it kind of forms a pattern that looks like feathers or ferns.
FROST FACTS !!!
Plants most likely to be damaged by frost include beans, grapes, melons, tomatoes, eggplants and peppers.
Plants most likely to tolerate or even benefit from frost include carrots, onions, lettuce, parsnips, cabbage, cauliflower, broccoli, sprouts, kale and turnips.
Most farmers spray their crops to reduce frost damage. The spray contains a ice-minus bacteria, which makes it difficult for ice-crystals to form.
Greenhouses help to protect crops from cold and frost damage.
Evergreen trees, such as pine and spruce stop growing during a frost, but they won’t die.
Hoar frost gets its name from a word meaning “old”, mainly because it looks like white hair.
Frost is most common in low lying areas.
Frost usually forms at night, but once the sun rises in the morning and heats the air, the frost melts very quickly.
The Russian Santa Claus is called Ded Moroz, or Father Frost.