If the cardboard is opaque is my prediction by moving shapes closer and further away from the light source correct?

Answer 1

If you are using an opaque cardboard to predict how moving shapes closer or further away from a light source will affect their shadows, your prediction is likely to be correct. When you move objects closer or farther away from a light source, the size and position of their shadows will change.

Here's what you can generally expect:

Moving Closer to Light Source: When you move an object closer to the light source, the shadow it casts tends to become larger and less defined. This is because the light rays diverge less as they reach the object, creating a broader and softer shadow.

Moving Away from Light Source: When you move an object away from the light source, the shadow it casts tends to become smaller and more defined. The light rays spread out more as they reach the object, creating a sharper shadow.

Using an opaque cardboard to experiment with shadows is a great way to observe and understand how light interacts with objects. By observing these changes in shadow size and definition, you can gain insights into the principles of light, shadow, and perspective. This type of hands-on experimentation can be particularly helpful for educational purposes, especially in fields like art, Photography, and physics.

Answer 2

If the cardboard is opaque, then it will not allow light to pass through it. Therefore, if you move shapes closer or further away from the light source, they will still be visible because the light source is shining on them and illuminating them.

However, if the cardboard is translucent, meaning that it allows some light to pass through it but not all of it, then moving the shapes closer or further away from the light source could affect their visibility. If the cardboard is partially transparent, then objects that are behind it may appear more or less visible depending on their position relative to the light source.