Grade 8 Physics Light Properties Review Flashcard

Front

How does light travel through a vacuum?

Back

Light travels through a vacuum as electromagnetic waves.

Front

What is light transmission?

Back

Light transmission refers to the ability of light to pass through a medium without being absorbed or scattered.

Front

What is refraction of light?

Back

Refraction is the bending of light as it passes from one medium to another.

Front

What are transparent, translucent, and opaque materials?

Back

Transparent materials allow light to pass through completely, translucent materials allow some light to pass through, and opaque materials do not allow light to pass through.

Front

What is the law of refraction?

Back

The angle of incidence is equal to the angle of refraction.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second.

Front

What happens to light when it hits a reflective surface?

Back

Light reflects off a surface, following the law of reflection: the angle of incidence equals the angle of reflection.

Front

What is dispersion of light?

Back

Dispersion is the separation of light into its component colors when it passes through a prism.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light from a surface, while refraction is the bending of light as it passes from one medium to another.

Front

What is total internal reflection?

Back

Total internal reflection occurs when light hits a boundary at an angle greater than the critical angle, causing it to reflect entirely back into the medium.