Forces and Energy
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What is a earthquake
Movement in earths Tectonic Plates resulting in large amounts of energy releases
What are the effects of an earthquake on earths surface
Tremors and Fissures Land slips Avalanches
What are typhoons
strong wind and heavy wind causing flooding. Wind can reach 200 km/h
How do typhoons affect earth crust
Strong gusty wind Floods
What are volcanic eruptions
Large amounts of energy released from earth as heat, light and kinetic energy of the magma
What does volcanic eruption do to the earths surface
eruption of magma Deposition of debris caused by magma
What is a force
A force is a push or pull upon an object resulting from the objects interaction with another object.
What is the force SI unit
N [ newtons ] all caps
Tell me the equation of weight
Weight = mass x speed caused by gravity
What is gravitational force
it is the force exerted by a planet on an object. Known as the weight of the object
Is gravitational force a contact force or non contact
Non contact because gravitational force still pulls objects towards the centre of the earth without the need of physical contact
So what is weight
it is the amount of gravitational force acting on our body
So when we are bigger in size why are we heavier?
There is more surface area of our body coming into contact with gravitational force causing gravitational force to act on us more.
What is magnetic force
Push or pull force exerted by a magnet only
Is magnetic force contact or non contact
Non contact as he magnets need not touch in order for a push and pull force to be exerted. The push and pull force is produced but not needed in order to produce a force
What is contact force
Forces that result when two interacting objects are perceived to be physically contacting each other.
What is a non contact force
Forces that occurs even when two objects are not in physical contact with one another
What is electrostatic force
Force that exists between charged particles specifically ions
Is electrostatic force contact or non contact
Non contact as force is exerted even if there is no physical contact between two object
What is frictional force
force exerted by a surface as an object moves across it or makes an attempt to move across it
Is frictional force a contact force or non contact
Contact as it force is exerted by the surface when an object moves across a surface or attempts too causing object and surface to be in physical contact
What is tension Force
Force transmitted through a string rope or cable or wire when it is pulled tightly by forces at opposite ends in the opposite direction
Is tension force contact or non contact
Contact force as the string wire or cable needs to be pulled pr stretched in the opposite direction by forces on opposite ends
Spring force
Exerted by any compressed or stretched spring when a object is attached to it