Speed of light

 

300,000,000 M/S

0.006 Sec

Investigating the laws of reflection

Equiptment: 

• Mirror 
• Light box
• Power supply

Aim: To investigate how light behaves when it hits a plane (flat) mirror.

Method: 

1. Collect a ray box, power supply and single-slit ray side from your teacher, and set them up to produce a single beam of light.

2. Place a plane mirror on the diagram of the protractor as described below.

3. Vary the angle of incidence and record the angle of reflection in the result table.

Result

Angle of Incidence	Angle of Reflection
0°	0°
10°	20°
20°	30°
30°	40°
40°	50°
50°	60°
60°	70°
70°	70°
80°	80°

 

The Eye- Conclusion

 The Eye

Section 1: Label the diagram of the eye.

1.  Sclera

2. Lens
3. Iris
4. Cornea
5. Pupil
6. Retina
7. Optic nerve

Quizlet: The Eye

Section 2: Complete the optical illusions and write down how you think each optical illusion works.

Optical Illusions

1. Young

2.  Yes

3.  Both of them

4.   Two faces

5.   I can't see anything

6.    Triangle/Rectangle3 blocks

7.  5 line/colour black and white

8.   Arrow/Line/Stick line

9.  Stairs/5 blocks/Rectangle

10.  Square/ 42 blocks/line

11.  Square/ 2 blocks/

12.  Rectangle/Triangle/Circle

13.  Circle/Eye/ Line circle

14.  Circle/Square

Section 3: Find 10 interesting facts about the eye.

1. In a very basic form, the eye is thought to have first developed in animals around 550 million years ago!
2. In a single second, it's possible to blink five times.
3. You are likely to blink more often when you are talking.
4. A block typically lasts 100-150 milliseconds.
5. You see things upside down- it is your brain which turns the image the right way up.
6. You actually see with your brain, not your eyes, Our eyes function like a camera, capturing light and sending data back to the brain.
7. The human eye can function at 100% at any given moment, without needing to rest.
8. Red-eye in photos is caused by light from the flash bouncing off the capillaries in your eyes.
9. If the human eye was a digital camera, It would have 576 megapixels.
10. The eye is the fastest muscle in your body- hence why when something happens quickly, we say 'in the block if an eye!'

Interesting Facts

Section 4: Colour Blindness Eye test

Eye Test 

1. What are your colour blind test results? Good, Inconclusive

2. What does this mean? It means your eyes good

3. What is the normal colour vision?

Eye Dissection

 Aim: To dissect a cow's eye and look at the different parts of the eye.

Equiptment: 

1.  A Cow's eye

2.  Tray

3.  Tweezers

4.  Scissors

5.  Newspaper

6.  Gloves

Method:

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

2. Put on a rubber glove.

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

4. Puncture a hole in the corner where the cornea and the sclera 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 done you will be able to access the retina at the back of the eye.

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

9. The dissection is now completed and all parts of the eye need to be wrapped up and trashed. The trays and utensils that were needed must be rinsed and the rubber gloves throw out.

Summary:

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

Energy Transformation Experiment

8 different kind of energy

1. Sound Energy
2. Light Energy
3. Heat Energy 
4. Chemical Energy
5. Electric Energy 
6. Kinetic Energy
7. Potential Energy
8. Elastic Potential Energy

1. Chemical  + Electrical = Phone
2. Light + Chemical = Flashlight,Car
3. Kinetic + Light =  Conect

Aim: To make a marshmallow shooter that transforms energy.


Equipment:

1.  Marshmallow
2.  Cup
3.  Scissors
4. Duck Tape
5. Balloon

Method:

1. Take the scissors
2. Cut the bottom off of the cup
3. Take the balloon and cut the bottom off the very tip after you cut it off you will take it and stretch it over, the top of the cup where you cut hole once it's on you will tie and knot in the end where you would normally blow air into balloon tie it off.
4. In order to secure the balloon over the top of the cup take a piece of duct tape and wrap it around securely tapping the balloon to the cup, this will allow you to be able to pull the balloon as far back as you can without snapping off, You will now take a handful of marshmallow this will be your ammo that you will able to shoot far distance with to prepare your new marshmallow and place it in the  very centre of the bottom of your cup 
5. You will now take hold of the end and pull it back as far as you would like in order to gain
6. Have Fun!

Here is The Video

Conclusion:


 This Experiment turns from Elastic  Energy ➡ Kinetic energy.