All i can tell you is a lot! Probably tons of snow is needed. Glaciers are frozen water and ice. They are very big in size. They continuously move but they move at a slow pace. It takes a very long time for them to form. Also many glaciers are fresh water. Hoped this helped you!! I also threw in some fun facts there! lol
Glaciers form where more snow falls than melts. So, it really depends where the glacier is. If the area snows like crazy a lot, the size of the glacier would be big. If it doesn't snow that much there, the glacier would probably melt much faster, and be less big.
Smaller
That is usually called a glacier
A boulder left behind by a retreating glacier is known as an erratic. A glacier is a moving river of ice and snow.
More snow must fall than melts; and buildup must occur in a flat or relatively low slope area
the weight of the newer snow compresses the older snow.
Glaciers form where more snow falls than melts. So, it really depends where the glacier is. If the area snows like crazy a lot, the size of the glacier would be big. If it doesn't snow that much there, the glacier would probably melt much faster, and be less big.
The snow freezes and becomes layer and soon becomes a glacier
Smaller
Glacier has higher density then snow
No. A glacier is a mass of moving snow and ice.
You need the snow to begin making a glacier.
A glacier forms in a place where snow builds up for years. The main thing is that it has to be in a place where the snow does not melt in the summer. After so long, the weight of the snow compresses and becomes as, and as long as more snow falls on top of that glacier, that is what happens..... ^.^ I hope this answer helped!
it's a valley glacier, it moves slowly carrying debris and melted snow.
The snow keeps pressing together until all the air in the snow is gone then it pushes together more until it turns into a glacier.
Snow along a broad plateau does not melt, but compacts into a glacier.
That is usually called a glacier