Showing posts with label Inquiry. Show all posts
Showing posts with label Inquiry. Show all posts
Wednesday, 21 September 2011
Wednesday, 24 August 2011
What is Friction?
Research Reading
LI:Reading for meaning and understanding.
Friction is actually a force that appears whenever two things rub against each other. Although two objects might look smooth, microscopically, they're very rough and jagged.
Every time you go up a steep hill it feels like you are going to fall down the hill. Air resistance is a big concern of designers of cars, planes,and boats.
These designers try to reduce friction so that a car will travel across the road,a plane will fly through the air,and a boat will move through the water as easily as possible.
You can slide much faster down the water slide because water reduces friction.
LI:Reading for meaning and understanding.
Friction is actually a force that appears whenever two things rub against each other. Although two objects might look smooth, microscopically, they're very rough and jagged.
Every time you go up a steep hill it feels like you are going to fall down the hill. Air resistance is a big concern of designers of cars, planes,and boats.
These designers try to reduce friction so that a car will travel across the road,a plane will fly through the air,and a boat will move through the water as easily as possible.
You can slide much faster down the water slide because water reduces friction.
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