The video tutorial introduces the concept of refraction, explaining how light changes speed and direction when moving from air to water due to differences in density. An experiment with a pencil in a glass of water demonstrates this phenomenon, showing how the pencil appears bent due to refraction. The tutorial concludes with a homework assignment to reinforce the concept.

Why was Jimmy unable to run fast in water?

• Because water is colder than air

• Because water is slippery

• Because water is more dense than air

• Because water is less dense than air

What happens to the speed of light when it enters water from air?

• It stops

• It remains the same

• It increases

• It decreases

Tags

NGSS.MS-PS4-2

What is the term used to describe the bending of light when it passes from one medium to another?

• Reflection

• Diffraction

• Refraction

• Absorption

Tags

NGSS.MS-PS4-2

What did the pencil in the glass of water demonstrate?

• Absorption

• Diffusion

• Refraction

• Reflection

Tags

NGSS.MS-PS4-2

Why does the pencil appear bent when placed in water?

• Because the pencil is actually bent

• Because of the glass shape

• Because of refraction

• Because of the water's color

Tags

NGSS.MS-PS4-2

What changes when light travels from air to water?

• Its intensity

• Its speed and direction

• Its color

• Its temperature

Tags

NGSS.MS-PS4-2

What causes light to change direction when it enters a different medium?

• Difference in density

• Difference in temperature

• Difference in color

• Difference in shape

Tags

NGSS.MS-PS4-2

What is the first homework assignment given in the video?

• Write an essay on refraction

• Put a pencil in a glass of water

• Draw a diagram of light refraction

• Read a chapter on light

What is the second homework assignment given in the video?

• Subscribe to the channel

• Comment on the video

• Press the like button

• Share the video