PS1 - Can I Believe My Eyes Lesson 3 &4

Front

What happens to light as it travels away from its source?

Back

Light spreads out in all directions.

Front

What is the role of the optic nerve in the eye?

Back

The optic nerve sends information signals from the eye to the brain.

Front

Why do scientists use models?

Back

Models help explain things that are difficult to observe, represent things that are too big or too small, and help to understand something.

Front

What would happen to the reading of a light sensor if it is covered?

Back

The reading would decrease because less light reaches the sensor.

Front

Which part of the eye controls the amount of light entering?

Back

The iris controls the amount of light entering the eye.

Front

What is the function of the retina?

Back

The retina converts light into neural signals for the brain.

Front

How does light travel?

Back

Light travels in straight lines until it hits an object.

Front

What is the difference between direct and reflected light?

Back

Direct light comes straight from the source, while reflected light bounces off surfaces.

Front

What is a light sensor used for?

Back

A light sensor measures the intensity of light.

Front

What can affect the reading of a light sensor?

Back

Distance from the light source, obstacles blocking the light, and the angle of the sensor.