Eye blog post

How light travels from your eye through to your brain...

The Cornea is the front part of the eye its refracts light as it enters the eye...
The Pupil is the centre of your eye and it lets light in...
The Iris is the coloured part of your eye Lets a certain amount of light in...
The lens has 2 sides and focuses light to your retina...
The retina has a layer of cells at the back of the eye and collects light from an image...
The optic nerve is a bundle of flexible nerves connected to a bunch of nerves that are connected to the brain...

How the light gets to your brain...
Light enters the eye through the cornea the clear dome-shaped that covers the front of the eye from the cornea the light travels through to the pupil lets the light pass through and its the centre of your eye from there the light hits the lens the transparent ball inside the eye with focuses light on to the retina from the retina it goes to the optic nerve and from there it goes to the brain...

coding on sphere edu plans and coding for sphero (stuck in the mud)

For the last 3 weeks, we started to look at making our own codes on sphere edu and making a fully functional game that we could play... First we started off by looking at the community's projects and getting a rough idea on what we could and how we could change it... After we started to brainstorm on what we could change and we could make it better to make it a successful and fun game for the community to play...

Human rights

Human rights

Human rights wore introduced in the 20th century human rights is the freedom for the people and freedom of thoughts and to express thoughts...

this means before people had human rights there wore slaves and only the rich had rights...

but when we introduced human rights people had freedom and rights to do there own thing...

AIM
To observe convection in a liquid.

Method
- set up a bunsen burner on a heatproof mat. Put the gauze mat on the tripod but leave it just to one side the bunsen burner...
-fill a 200mL beaker with 150mL of cold water
-Place the beaker on top of the tripod and gauze mat and allow it to settle for a few min...
-carefully insert a drinking straw down one side of the beaker, ensuring the straw is touching the bottom of the beaker. Be careful as you lift the straw out of the beaker...
-Using tweezers drop a crystal of potassium permanganate down the inside of the straw. Wait for the crystal to settle on the bottom of the beaker.
-Very gently, so to not disturb the water, remove the straw...
- Light the bunsen burner and slid in under the tripod so that you are heating the outside of the beaker where the crystal is... then watch.

as the beaker heated the potassium permanganate started to spread more after a couple of seconds the collar purple filled the beaker...

the hot water rises because of it less dense and because the hot water is less dense it allows the potassium permanganate could rise and spread around the beaker...

Aim
Ro observes conduction along a metal rod.

Method

1. set up and light a bunsen burner
2. smear a small amount of petroleum jelly on to the head of each drawing pin.
3. attach the drawing pins at even intervals along the length of the metal rod.
4. Clamp one end of the metal rod to a retort stand.
5. position the retort stand so the unclamped end of the metal rod is in the bunsen burner flame and start the stopwatch.
6. Record the time it takes for each pin to drop on the table below...

Resalts
pin 1. 12 sec
pin 2. 27 sec
pin 3. 50 sec
pin 4. 1min 49 sec

Explanation
As the mettle rod heated the particles started vibrating more because of the extream heat and that made the heat transfer from 1 place to another causing the pins to drop off.

the sinking of the Titanic

Belfast UK 31st of March 1909 the Titanic was under construction it took 2 years to make this 269-meter long ship and took 3000 men to build the Titanic in 2 years. May 31st 1911 it was the day the Titanic was finished and it was the first day the Titanic launched and had 3,547 passengers.  

This is the link to all of the places the Titanic stopped at...

LINK

1912 15th of April the day the Titanic hit the iceberg the Titanic was trying to make a compleat turn to miss the iceberg but didn't have enough time to, the Titanic hit the side of the iceberg and making a hole on the side of the Titanic.

After the Titanic collided with the iceberg people moved to the deck of the Titanic to get into the lifeboats but there wore not enough lifeboats to fit everybody. There wore 20 lifeboats and 3,547 passengers and only 706 passengers that survived the sinking of the Titanic.

It took 2 hours to sink this 269-meter longship 1,500 people wore killed due to the sinking of the Titanic the people that survived they wore put on a trial and many people mentioned that there was a fire but the judge…

AIM, To observe contraction in the gases...

METHOD, 

1. Set up the bunsen burner underneath a tripod and gauze mat...

2. Pour approximately 50-60 mL of water into your can. It should be no more than 1/4...

3. Heat the can of water until steam is seen escaping from the top... Carefully grip the can with the scissor tongs. Ensure you have a firm hold of the can before lifting it off the glaze mat... 

5. Quick;y, but very carefully, invert the can as you plunge it into a container of water...

Observation, We use a clean can full 1/4 full of water and we heated the water until it started to steam from the top of the can and using scissor tongs we picked up the can and fastly dipped the tip of the can into the cold water and the can implode because of the sudden change of temp...

The can implodes because when the can is plunged into cold water, the water vapour condenses leaving the pressure inside the can much less than the outside.  As the water boils the molecules bouncing off the inside of the can creating a force pressing outwards. The pressure of the atmosphere pressing inwards.

Link to where I got my info