U5 FORCES 4º
Mónica Moreno
Created on April 15, 2020
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Transcript
U5 FORCES
Reutilizar
1- TYPES OF FORCES
2 - MAGNETISM
3 - GRAVITY AND WEIGHT
4 - UPTHRUST
1- TYPES OF FORCES
Forces make things move or stay still by pushing or pulling
PUSH
moves something away
PULL
moves something closer
CONTACT FORCES
An object moves another by touching it.
BALANCE FORCES
UNBALANCE FORCES
Two opposite forces are not equal.
He moves by contact
Two opposite forces are equal.
NON-CONTACT FORCES
The force moves an object without touching it.
GRAVITY FORCE
MAGNETIC FORCE
2 - MAGNETISM
Magnetism is a non-contact force and can be push or pull force. Magnetism forces attract iron and steel
Magnets have two ends called the north pole (N) and the south pole (S)
3 - GRAVITY AND WEIGHT
Mass is the amount of matter in an object (Kg) Weight is a force. It is mass X gravity
GRAVITY= 10
GRAVITY is a non-contact pull force. All masses have gravity. The Earth’s gravity pulls everything on the Earth towards its centre.
GRAVITY= 1,6
4 - UPTHRUST
UPTHRUST: is a contact, push force applied by water or air. It’s a opposite force to gravity.
weight
upthrust
weight
upthrust
upthrust
weight
float:
sink:
END