This video tutorial explores how waves, particularly light waves, interact with boundaries through reflection and refraction. It explains the principles of reflection, including angles of incidence and reflection, and introduces the concept of virtual images. The video also covers refraction, describing how light bends when it changes mediums and the role of the index of refraction. A practical demonstration using canola oil and pyrex illustrates these concepts.

What is the primary focus of the video?

• Sound waves and their properties

• Light waves and their interaction with boundaries

• The behavior of particles in different mediums

• The speed of light in a vacuum

What is the angle of incidence?

• The angle between the reflected ray and the normal line

• The angle between the incident ray and the surface

• The angle between the incident ray and the normal line

• The angle between the reflected ray and the surface

What is a virtual image?

• An image that is formed by sound waves

• An image that is formed by bending light

• An image that exists beyond the mirror

• An image that appears on the surface of a mirror

What is diffuse reflection?

• Reflection from a smooth surface

• Reflection that follows the law of reflection

• Reflection from a rough surface

• Reflection that does not involve light

What is refraction?

• The bouncing of light off a surface

• The scattering of light in different directions

• The bending of light due to a change in medium

• The absorption of light by a surface

Tags

NGSS.HS-PS4-5

What causes light to bend when it enters a different medium?

• A change in the direction of light

• A change in the speed of light

• A change in the color of light

• A change in the intensity of light

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

What is the index of refraction?

• A measure of how much light is absorbed by a medium

• A ratio comparing the speed of light in a medium to the speed of light in a vacuum

• A measure of the intensity of light in a medium

• A ratio comparing the wavelength of light in a medium to the wavelength in a vacuum

What is the index of refraction for air?

• 1.0003

• 1.52

• 2.15

• 1.33

Why does cubic zirconia make a great gemstone?

• Because it is very hard

• Because it has a high index of refraction

• Because it is very light

• Because it is very cheap

What happens when canola oil is poured into a pyrex test tube filled with air?

• The test tube becomes more visible

• The test tube disappears

• The test tube bends light more

• The test tube changes color