Chapter 3 grade 4

Front

What is the function of the eye as a system?

Back

The different parts of the eye work together to detect light and create an image with the help of the brain.

Front

What are sound and light classified as?

Back

Both sound and light are forms of energy.

Front

How do you measure the amplitude of a wave?

Back

You measure from the peak (B) to the midline.

Front

What device is capable of receiving and transmitting digital signals?

Back

A computer.

Front

What type of material allows some light to pass through but not all?

Back

Translucent material.

Front

What are the main parts of the eye involved in vision?

Back

Cornea, lens, retina, and optic nerve.

Front

What is the difference between reflection and refraction of light?

Back

Reflection is the bouncing back of light, while refraction is the bending of light as it passes through different mediums.

Front

What is the role of the brain in the visual system?

Back

The brain processes the images received from the eye to create visual perception.

Front

What is the definition of energy?

Back

Energy is the ability to do work or cause change.

Front

What is the significance of amplitude in sound waves?

Back

Amplitude determines the loudness of the sound.