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Is it true that due to the force of friction a glacier will start to move downhill once the layer of snow and ice is more than about 30 to 40 meters deep?
Wiki User
∙ 9y ago
False. A glacier will move due to the force of gravity, not friction.
Wiki User
∙ 9y ago
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What force moves a glacier downhill?
Glaciers can slide down slope for several reasons. First, a glacier is made of ice, which is frozen water. Liquid water is slippery. That is important to remember. Second, gravity is pulling on them making them want to move downhill. Third, when ice is put under a lot of pressure, it can melt. The pressure above the bottom of the glacier can cause some melting on the bottom layer. That can make the glacier slide. Fourth, the sun shining on the top of the glacier can make the top of the glacier melt. The water from that melting can go to the bottom of the glacier and help lubricate the bottom. That can help it slide. Mountain glaciers are always sliding downhill. Snow replenishes glaciers and adds ice to the top. If glaciers melt faster than they are replenished they vanish. Some mountain glaciers have vanished within the last 100 years. A few more are likely to vanish in the next decade.
What are the two factors that affect the friction force between two surfaces?
The strength of the force of friction depends on the types of surfaces involved and on how hard the surfaces push together.
What is the force that causes rocks or soil to move downhill?
gravity
A force that resists motion?
friction resistance opposition impedance These all have a slightly different connotation and depend on the type of force under consideration.
What is the name of the force that resist motion?
Friction resists motion.
Once the depth of snow and ice reaches more than 30 to 40 meters the force of friction begins to pull a glacier downhill true or false?
True
What kind of force is skiing downhill?
Gravity but the snow provides friction
To keep a sled accelerating downhill the force of gravity must be greater than the normal force?
"friction"
Does a ball rolling down a hill cause static friction?
Friction is one force causes a ball to roll downhill. The smaller the static friction coefficient, the more liable the ball will be to skidding instead of rolling. Static friction is involved in a ball rolling downhill.
Is there friction in a building?
There is friction nearly everywhere. Air resistance, carpet, and your shoes all produce friction. The formula for finding the force of friction is friction force equals the coefficient of friction times the cosine of the angle of the force times the mass of the object times gravity (9.80 meters/sec squared)
Is it true that a sled accelerating downhill the force of gravity must be greater than the normal force?
Not at all. The force of gravity must be greater than the friction force, but if the sled is on any kind of slope, then it doesn't matter what the normal force is.
Do to the force of friction a glacier will start to move down hill once the layer of snow and ice is more than about 30 to 40 meters deep?
Glaciers move downhill due to gravity and the internal deformation of ice. The ice acts like a brittle solid until the thickness exceeds about 50 meters. Pressure on ice deeper than 50 meters causes plastic flow, which causes them to start to move. They also move through basal sliding in which it slides over terrain, lubricated by the presence of liquid water created from ice that melts under high pressure from frictional heating.
Which force slows down a ball when it moves?
The force of friction, which is the normal force (weight) multiplied by the coefficient of friction (how rough the carpet is).
What force moves a glacier downhill?
Glaciers can slide down slope for several reasons. First, a glacier is made of ice, which is frozen water. Liquid water is slippery. That is important to remember. Second, gravity is pulling on them making them want to move downhill. Third, when ice is put under a lot of pressure, it can melt. The pressure above the bottom of the glacier can cause some melting on the bottom layer. That can make the glacier slide. Fourth, the sun shining on the top of the glacier can make the top of the glacier melt. The water from that melting can go to the bottom of the glacier and help lubricate the bottom. That can help it slide. Mountain glaciers are always sliding downhill. Snow replenishes glaciers and adds ice to the top. If glaciers melt faster than they are replenished they vanish. Some mountain glaciers have vanished within the last 100 years. A few more are likely to vanish in the next decade.
Which is the larger the kinetic friction force or the statical friction force?
Statical friction
Is friction a natural force?
friction is a natural force
What are the two factors that affect the friction force between two surfaces?
The strength of the force of friction depends on the types of surfaces involved and on how hard the surfaces push together.
