Next week we will be investigating friction. Can you find out what friction is and record some examples of friction in action in everyday life?
http://www.bbc.co.uk/education/clips/zcx76sg
You can post your videos or links to great websites here as well!
Miss Gale
What is friction
ReplyDeleteFriction is a force, which is created whenever two surfaces move or try to move across each other.
Examples of friction in everyday life:
Riding a bike – The wheel touching the ground,
Drawing/painting – Pencil/paintbrush touching paper,
Typing – Fingers touching the keyboard,
Driving – Hands touching the steering wheel.
Friction is the resistance to motion of one object moving relative to another.It is not a fundamental force,like gravity.Instead,scientists believe it is the result of the electromagnetic attraction between particles in two touching surfaces.
ReplyDeleteNewtons third Law of motion states that for "Every action there is an equal and opposite reaction".
ReplyDeleteAction : The ball pushes on the floor.
Reaction : The floor pushes on the ball.
Some examples :
1. Walking on the floor - friction between shoes , feet and floor. If there is no friction between these we will slippering down.
2. Washing our hands - hands and water.
3. Putting clothes - clothes and skin.
4. Chewing food
5. Using pen or pencil to write.
Friction is a force between two surfaces that are sliding, or trying to slide, across each other. Friction always slows things down. Air resistance is a type of friction. The amount of friction depends on the material from which two surfaces are made from. The rougher the surface, more friction is produced. Friction also produces heat . if you rub your hands together quickly, you feel them get warmer and warmer. Names of frictions rolling friction, static friction, sliding friction
ReplyDeleteWhat is friction?
ReplyDeleteFriction is a force between two surfaces that are sliding.
Examples of friction:
clapping hands,
rolling a ball across the carpet,
rolling a ball across the floor,
car breaks.
Types of friction:
There are four types of friction
Static friction = There is no movement at all.
Kinetic friction = The action between objects in motion.
Rolling friction = The/a sphere body that rolls causes a rolling friction.
Fluid friction = Is a kind of friction that acts with fluids.
Science – friction
ReplyDeleteFriction is a force between two surfaces and objects that are sliding or rubbing each other, or are trying to rub. Friction also slows things down for example when rubbing a book on a table it is difficult to move. The only place friction can’t work is vacuum, so if you drop a feather and an apple in vacuum they will fall at the same time because outside vacuum the feather will fall last with air resistance, air resistance is friction! Friction can be heat like when rubbing hands together, quickly.
There are three types:
• Dry Friction - Dry friction occurs when two solid objects touch each other. If they are not moving, it is called static friction. If they are moving, it is called kinetic or sliding friction.
• Fluid Friction - Fluid friction involves a fluid or air. The air resistance on an airplane or water resistance on a boat is fluid friction. Although liquids offer resistance to objects moving through them, they also smooth surfaces and reduce friction.
• Rolling Friction - Rolling friction occurs when a round surface rolls over a surface, like a ball or wheel.
Everyday items:
• Running/walking
• Cars
• Flying a plane
• Writing
• Lighting a match
• Pulling or pushing an object across another object or surface
Friction is a force where two surfaces rub against the other surface.These are friction in everyday life
ReplyDelete.An iron being pushed across a material
.A ski board on the snow on a mountain
.Rubbing your hands together to make heat
.A washing machine being pushed against the floor
.A bike going down a hill
.A sled sliding against ice
if you grind two certain types of metal together they will melt.
ReplyDeleteFriction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction:
ReplyDeleteDry friction resists relative lateral motion of two solid surfaces in contact. Dry friction is subdivided into static friction ("stiction") between non-moving surfaces, and kinetic friction between moving surfaces.
Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other.
Lubricated friction is a case of fluid friction where a lubricant fluid separates two solid surfaces.
Skin friction is a component of drag, the force resisting the motion of a fluid across the surface of a body.
Internal friction is the force resisting motion between the elements making up a solid material while it undergoes deformation.
Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor friction makes this difficult.
ReplyDeleteFriction always works in the direction opposite from the direction the object is moving, or trying to move. Friction always slows a moving object down.
Friction examples of everyday life is as following:
- The tread on your shoes and the ground. The friction acts to grip the ground and prevent you slipping over.
- Rubbing both your hands together to create heat.
- A Block being slid across the floor.
T- he bottom of a chair leg and the floor when you push out the chair to stand up.
Friction is the force
ReplyDelete