8th Grade Summative #4 part 2 Light Review

Front

What type of waves require a medium to travel through?

Back

Sound waves require a medium (like air, water, or solids) to travel through.

Front

What causes light waves to change directions when they travel through different mediums?

Back

The mediums have a different density causing the waves to travel at different speeds, which results in a change in direction.

Front

What color of wavelength of light is reflected from an object that appears blue?

Back

The object reflects blue wavelengths of light.

Front

What type of lens is curved inward and can diverge light rays?

Back

A concave lens is curved inward and diverges light rays.

Front

What type of lens is curved outward and can converge light rays?

Back

A convex lens is curved outward and converges light rays.

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 (km/s).

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another due to a change in speed.

Front

What is the relationship between wavelength and frequency in light waves?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that can be seen by the human eye, ranging from red to violet.

Front

What is the role of a prism in relation to light?

Back

A prism refracts light and can separate it into its component colors, creating a spectrum.