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Wednesday, 24 May 2017

Careers in science

Diver






Physicist





Park ranger 





Aqua cultural 





Aquarist 




Cartographer






climate change analyst 




Emergency management 






environmental compliance 







environmental scientist 

Geographer




geoscientist







hydrologist






industrial health and safety engineer





meteorologist 




soil and water conservationist 



soil scientist 



surveyor





water and liquid waste treatment plant and system operator





ship and boat captain 














































Thursday, 18 May 2017

Isaac Newton


                                                     Isaac Newton

1
    who




    what



     how is this work related to forces











2   G forces

g forces act on you when you go up on a rollercoaster when you are coming down the other side






3 why and when do containers explode or implode










4 concorde vs cargo planes
the top speed for a concorde is 2179 km/h

the top speed for a air plane is 885 km/h
























With no hot water and lid on and melted 
Hot water
With no water and lid on 
With hot water and lid on







1 inside and outside forces acting on the bottle are equal normal shape



the forces acting on the outside is greater than the inside the force is called air pressure







2  Hot    force acting on the inside is greater than the force acting on the outside
bottle bulges


3  hot water emptied lid on cool under cold water
bottle collapsed
force acting on outside of bottle is greater than force acting inside
why

air is made up of nitrogen,oxygen and carbon dioxide
why
Air pressure( Aforce) is greater
Air particles have more energy and push harder against bottle



Sea saws
fulcrum
see saws moves on this point  


1 if 2 people are the same weight where do they need to sit to balance
on the middle





2 if 1 person is heavier  where does this person need to sit to balance near the front 







HIGH IMPACT




PUSH



When you push an object it moves away from you. 




PULL 
When you pull an object you make it move toward you.

Image result for pull

FORCE  
A force makes things move and go fast, slow down and change direction. 


Image result for force


UNBALANCED FORCES


Unbalanced forces will make an object want to move or accelerate away 


Image result for balanced forces


                                   ACCELERATE

If we apply force to a moving object we can get it to move faster we get it to accelerate 

Image result for accelerate

                              FRICTION

Friction is the force produced between two surfaces as they rub against each other friction slows objects down or makes them stop.



Image result for friction for kids



AIR RESISTANCE 

Air resistance  slows things down as they travel through air . is is because air contains millions and millions of molecules that try to block the way, think of how hard it is to walk or even run through water waste deep   






Image result for air resistance




BALANCED FORCES 

When an object is balanced it will stay still or keep moving in the same direction. An example is when people of exactly the same size or weight are on a see-saw they will not move unless extra force is applied.






Image result for balanced forces

POTENTIAL ENERGY
This is the stored energy of an object in relation to its position compared with other objects. If it is up high and is dropped or pushed it will be pulled down by earth's gravitational force.
Image result for potential energy
MOTION
This is a change in an object's position over a period of time. It is described in terms of displacement, distance, speed, acceleration and velocity.
Image result for motion MASS
This is about how much stuff or  is in an object. It is not the same as weight as, for example, an object on the Moon would weigh less because of lower gravitational forces but it would the same mass.


Image result for mass
GRAVITY 
This is the force which pulls or attracts objects to the centre of the earth.

Image result for gravity