Since no one answered, and I really need help:

So I am doing this science experiment about light. I chose to do one where you put a pencil in a glass of water and the light makes it look like it's bending. There is a chart of measurements that you need to fill out and I have no idea how to get them. I know you are gonna use a protractor and measure different stuff about the pencil but can someone please explain to me how to fill out this graph:

Angle of Incidence |Air|Water|Glass
In Air (or water,
or glass)
|__________________|___|____|_____
|__________________|___|____|_____
|__________________|___|____|_____
|__________________|___|____|_____

Take a look at Snell's Law. Then you can make up measurements and figure the related values.

Not sure how you'd lay a protractor against the water container... I'm sure you can find some online examples, though.

Sure, I can help you fill out the chart for your science experiment!

To measure the angle of incidence, you will need a protractor. The angle of incidence is the angle between the incident light ray and the normal (an imaginary line perpendicular to the surface of the water or glass).

Here's how you can fill out the chart:

1. Place the glass of water on a table, ensuring it remains stable.

2. Choose a point on the side of the glass where you want to insert the pencil. This will be your starting point of measurement.

3. Hold the pencil straight up, perpendicular to the surface of the water, and align it with the point you chose on the glass. This will be your initial position for measuring the angle of incidence in air.

4. Look at the pencil through the water and observe the apparent bending. Estimate the angle at which the pencil appears to bend from its position in the air. This is the angle of incidence in water.

5. Repeat the same process but this time, place the pencil inside the water and observe how it appears to bend when viewed through the glass. Estimate the angle at which it appears to bend. This is the angle of incidence in glass.

6. Fill out the chart accordingly. For each row, write the angle of incidence for air, water, and glass.

For example:

Angle of Incidence |Air|Water|Glass
In Air (or water,
or glass)
|_________30°______|___|____|_____
|_________45°______|___|____|_____
|_________60°______|___|____|_____
|_________75°______|___|____|_____

In this example, let's assume that the angle of incidence in air is 30 degrees, the angle of incidence in water is 45 degrees, and the angle of incidence in glass is 60 degrees. These values will help you understand how light behaves when it passes from one medium (air) to another (water, glass).

Remember, these measurements are just estimations since you are using a qualitative method. Make sure to record any observations or discrepancies you notice during the experiment.

I hope this helps you fill out your chart for the science experiment! If you have any further questions, feel free to ask.