Electricity Circuits

Parallel - A circuit in which the bulbs are divided up evenly

Series - A circuit in which the bulbs are in one continuous line

1. circuit with one bulb 

2. series circuit with 2 bulbs

3. parallel circuit with 2 bulbs

4. parallel circuit with

-one bulb

-one switch

circuit and modelling

Circuits

Cell - Supplies energy to circuit, by pushing current from positive to negative end.

Voltmeter - A device used to measure voltage, or electrical potential energy difference.

Ammeter - A device used to measure current in a circuit

Wire - A thin, flexible thread of metal

Resistor - An electrical device that resists the flow of electrical current

Bulb - In a circuit, this shows if electricity is flowing by lighting

Switch - A device that opens or closes a circuit

Battery - A device that converts chemical energy to electrical energy

Electricity

Electricity 

Static electricity - A build up of electrical charges on an object.

Current electricity - A flow of electric charge.

Electrical charge - Electrical particles that negatively charge.

Circuit - A system that provides a pathway for electrical current to flow through.

Cell - Supplies energy to circuit, by pushing current from positive to negative end.

Voltmeter- A device used to measure voltage, or electrical potential energy difference.

	Static electricity	Current electricity
What is it caused by?	two objects rubbing against each other with one supplying electrons to the other	Current electricity is powered from wires
Do the negative charges move?	yes negative charges can move freely	No negative charges don't move in current electricity
Does it power appliances?	Any source of electrical energy tries to maintain a continuous flow of charges between two points

Static electricity - 

Walking across a carpet

Touching a metal door handle

Lightening

Tramp

Rubbing hair against balloon

How does the van de graaff machine work?

It pulls electrons from earth, then moves them along a belt and stores them on a long sphere.

What was one of the experiments we did?

In class we had our very own van de graaff and a few of had the chance to go up to it and place our hands on the sphere, as we waited for it to power our hairs on our body stood up!

Why did this happen?

The electricity transfers the charge to our hairs, because they try to repel each other it cause our hair to stand up.

 

cows eye dissection

Eye Dissection

Aim: To dissect a cows eye an look at the different parts of the eye

Equipment: 

1. cows eye

2. tray

3. newspaper

4. tweezers

5. scissors

Method: 

1. Set up with newspaper on the desk, the tray on top and the scissors and tweezers in the tray

2. put on rubber glove

3. start to remove the excess fat and meat from around the eyeball before dissecting it.

4. puncture a hole in the cornea where the cornea and the sci era meet. 

5. Cut around the cornea so that the vitreous fluid leaks out of the eye onto the tray. 

6. once the cornea has been totally removed you will be able to remove the lens from the iris

7. Cut the eye in half so that the inside is totally exposed. Once this has been one you will be able to access the retina at the back of the eye

8. You should now have place the retina, lens, cornea, and iris on a piece of paper. 

9. The dissection is now completed and all parts of the eye need to be wrapped ip and trashed. The trays and utensils that were used must be rinsed and the rubber globes thrown out. 

Summary:

The cows eye has exactly the same parts as the human eye except for its ability to see better in the dark. 

Light experiment

 Light experiment

Opaque - solid

Translucent - foggy

Transparent -  clear

Material	Comments:
Translucent: Measuring Cylinder	1. Blurred 2. From the light box 3. Yes, you can see straight through 4. The same  5. No
Transparent: Beaker	1. Clear 2. Coming from the light box 3. Yes, the light shines straight through 4. They are the same 5. Yes they do have colour
Opaque: Dish	1. Clear 2. Coming from the light box 3. No you cant see the light straight through 4. Not the same 5. No

The law of conservation of energy

Energy

Energy cant be created nor destroyed but only changed from one form into another form.

e.g of energy transformation- battery put into a flashlight to make light, which is chemical energy. 

aim: to look at the energy transformation

equipment:

Paper spiral, Bunsen Burner, gas 

summary:

As I held the paper spiral above the Bunsen Burner the heat cause it to spin round and round, so heat energy was being transformed into kinetic energy. 

1. what kind of energy was transformed?

heat energy transformed into kinetic energy

2. what was it transformed to?

heat energy - kinetic energy

Science materials

Science equipment

1. Conical flask

2. Measuring cylinder

3. Stirring rod

4. Beaker

5. Small beaker

6. Test tube

7. Test tube rack

8. Funnel

9. Tongs

10. Spatula

bunsen burner Experiment 

Aim- Was to correctly light the bunsen burner

Equipment- bunsen burner, heat proof mat, matches

Method- 

1. Place the bunsen burner ont he heat broof mat

2. Connnect the bunsen burner to the gas outlet

3. Turn the collar so that the air is closed up

4. make sure the gas is on then light the bunsen burner up

5. then turn the collar around to change the colour of the light

Science introduction

Making waves

The topics we will be studying in science are:

1. Energy types

2. Energy transformation

3. Wave

4. Sound

5. Light

6. The eye

7. Reflection and refraction light

8. Electricity

9. Circuit

10. Magnetism

All experiments will use the scientific method. The headings that are used for this will be:

Aim: 

Hypothesis: 

Equipment:

Method:

Findings:

Conclusion: