Page 119 - SK Year 6 Science DLP

FORCE
FORCE
DAYA
Let`s
Let`s
Remember
Remember

Pull FORCE Push

Effects of a Force

changes the changes the changes the stops a moving moves a
shape of an direction of motion speed of an object stationary object
object of an object object

Advantages of frictional force Disadvantages of frictional force

• produces heat • produces unwanted noise
• slows down a moving object and • makes movement difficult
stops it • causes the soles of shoes and tyres of
• holds an object vehicles to be worn out
• makes an object stay static
• sharpens tools

Frictional Force

Ways to increase Ways to reduce
frictional force Affecting frictional force
factors
• use patterned soles and • use lubricants
surfaces • type of surface • use grease
• make the surface • mass of object • use rollers and
rougher ball bearings
• use anti-slip mats • use wax
• use magnesium • use boric acid powder
carbonate chalk powder

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