Cartilage

-Tough
-Smooth
-Strong
-On the ends of the bone that move across each
-Stops friction
-Acts as a shock absorber

Cartilage can be damaged by
- Heavy impact- injury
-wear- tear
-stress
-lack of movement
Damage results in the bones grinding as they rub up against each other.

What is the difference between Osteoarthritis and Rheumatoid

Osteoarthritis is a joint that is inflammation.It is a form of arthritis that is a breakdown and a loss of the cartilage of more then one or more joints. The cartilage is a protein substance that serves as a ''Cushion''

Cartilage is a protein substance that serves as a "cushion" between the bones of the joints. 

Osteoarthritis symptoms and signs include
-Swollen joints
-joint stiffness

Bones

How many bones has a baby? 270 bones 

How many bones have a bone got? 206

Structure of the long bone e.g femur 

Types of joint 

• Hinge 
• Ball and socket
• Pivot 
• Glinding 
• Saddle 
• Conyloid 

Whats at the end of moving joints? Cartilage

Isaac Newton

Who is he?
English physicist and mathematician Sir Isaac Newton, most famous for his law of gravitation, was instrumental in the scientific revolution of the 17th century.

What did he make?

how is this work related to forces?
The invention that Isaac Newton made was to do with Gravitation.

"G" Forces?
The g-force of an object is its accelerate relative to Free fall.

Why when do containers explode or implode?

Concorde vs cargo planes

Forces

What is Force?
Force is Power made from a physical action or Act of movement

What are the different types of forces?

Frictional Force
Tension Force
Normal Force
Air Resistance Force
Applied Force
Spring Force Electrical Force  magnetic Force  Which force does static electricity belong to?Electrical Force  Mass vs weight, What is the difference between Mass and Weight  Mass is measured in kilograms or pounds. A one-liter volume of water has a mass of one kilogram. Weight is measured in newtons, the standard unit for force. A one-kilogram mass placed on a bench presses down on the bench with almost ten newtons of force.

Fantastic forces

1. mental or moral strength or power.
2. Friction and mass is very important as well. Firstly, a force is just a fancy word for push or pull, example: a man pushing a box, pushing is the force. All a force ever does is change the motion or speed of the object it is applied to. Secondly, there are two main types of forces, at a distance and contact forces.

PLANES 

Planes are cool 

There are four forces acting on an airplane in flight. These are thrust, drag, lift and weight(gravity). 1. THRUST.

coz this is shaped like a jet fighter and it look s better 

I got it off google 

size : Afour 

weight : Light 

Static Electricity

What is Static Electricity:

When a plastic ruler/ pen is rubbed on wool it will attract hair and small pieces of paper.

Electroscope:

Helicopters

History >dates Where who

Since around 400 BC, The Chinese had a flying top that was used as a children's toy. The flying top was made from bamboo and used the same method of spinning wings to fly up in the air.The first practical helicopters were built by Frenchman Louis Breguet in 1935 and by German Henrich Focke in 1936.

On September 14,1939, the VS-30o,the world's first pratical helicopter, took flight at Stratford,Connecticut. Designed by Igor Sikorsky and built by the vought-Sikorsky Aircraft Division of the United Aircraft Corporation. 

Once a helicopter leaves the ground, it is acted upon by four aerodynamic forces; thrust, drag, lift and weight. Understanding how these forces work and knowing how to control them with the use of power and flight controls are essential to flight. [Figure 2-1] They are defined as follows:

• Thrust—the forward force produced by the power plant/propeller or rotor. It opposes or overcomes the force of drag. As a general rule, it acts parallel to the longitudinal axis. However, this is not always the case, as explained later.
• Drag—a rearward, retarding force caused by disruption of airflow by the wing, rotor, fuselage, and other protruding objects. Drag opposes thrust and acts rearward parallel to the relative wind.
• Weight—the combined load of the aircraft itself, the crew, the fuel, and the cargo or baggage. Weight pulls the aircraft downward because of the force of gravity. It opposes lift and acts vertically downward through the aircraft’s center of gravity (CG).
• Lift—opposes the downward force of weight, is produced by the dynamic effect of the air acting on the airfoil, and acts perpendicular to the flightpath through the center of lift.

Thrust- The forward force produced by the power plan/propeller or rotor.It opposes or overcomes the force of drag. As general rule, It acts parallel to the longitudinal axis.


We have tried to make a paper helicopter and as we did we used a long leg and a short leg they both went Anti-Clockwise, They both took around two seconds up from two metres high.

How to make a plane

Aim: I want to find out how to make a good flying paper plane

Equipment: Paper

The way I made

1. I folded it in half and then unfolded the paper
2. Then i folded the top corners to the crease neatly 
3. once i done that i folded it again down  
4. and then do the following steps above and then it should look like that but then i fold the wings again 

The way my plane flew was successful and flew around 10 metres it curved slightly to the left and now I am going to see how far it would actually go.

Ways to identify dead bodies

-ID rg Driving license
-Finger prints
-Dental records
-DNA / Genetic fingerprinting unique to each people
-identify a dead body
-kids search

Blood Splatter Patterns

Forensics scientists use blood and blood splatter patterns to help solve crimes, especially violent ones.

Blood Splat

Today we played with fake blood.We used a knife,a hammer, a baseball bat and a Turky juice squeezer

Here is Evidence That I killed someone.

Forgrey - a copy

What things can be copied?

Handwriting
fingerprints
photos

Why do people copy other peoples work?

To get payed and to be famous.

Forensics

   

This is my Finger prints : NO SEALING MY FINGER PRINTS

What do police people use for finger prints?
By scanning your finger on a scanner


                                                        LOCARDS PRINCPLE

A  Locard speculated that every time you make contact with another person, place, or thing, it results in an exchange of physical materials. He believed that no matter where a criminal goes or what a criminal does, by coming into contact with things, a criminal can leave all sorts of evidence, including DNA, fingerprints, footprints, hair, skin cells, blood, bodily fluids, pieces of clothing, fibers and more. 

-DNA
-Shoe prints
-Tools left behind
-blood
-fibre off clothing
-Broken fingernails
-identification
-hair
-Witness
-CCTV
-Leave family member behind
 -licence plate
-clothing
-Body
-Bullets
-Knife
-Tyre tracks

How to write a report

AIM: WHAT YOU ARE TYING TO DISCOVER

HYPOTHESIS:AN EDUCATION GUESS ABOUT YOUR RESULTS

EQUIPMENT: WHAT YOU WILL USE

METHOD: STEP BY STEP INSTRUCTIONS THAT YOU WILL FOLLOW

DISCUSSION/CONCLUSION:
"TALK ABOUT"THE RESULTS. HO DOES IT RELATE TO YOUR OWN AIM

EVALUATE HOW COULD YOU IMPROVE YOUR EQUIPMENT

------------------------------------------------------------------------------------------------------------

Aim: What we want to find out

height -      number
136-140   1
141-145   2
146-150   1
151-155   4
156-160   8
162-165   7
166+        6

Discussion " the average height of 8mt students is (158-160) we regrets our hypothesis because the average is above.

Lab Equipment and its uses

Photo
name
used for

- Test tube holder

- Thing

funnel

-Scissor tongs

Lab Rules

                                                                       LAB RULES 

1. Always follow instructions
2. Enter lab ONLY if your teacher is present 
3.  Tie your long hair 
4. Clean up your work area 
5. Wear safety glasses 
6. If you break something you replace it