The video introduces the concept of light, explaining how it makes objects visible by reflecting off them. It discusses various phenomena associated with light, such as image formation by mirrors, the twinkling of stars, and rainbows. The video also covers the properties of light, emphasizing its straight-line propagation, and introduces the concepts of reflection and refraction, which are essential for understanding optical phenomena.

Why can't we see objects in a dark room?

• Because objects are invisible in the dark.

• Because our eyes are closed.

• Because the room is too small.

• Because there is no light to reflect off objects.

What helps us see objects during the day?

• Sunlight

• Starlight

• Moonlight

• Artificial lights

Tags

NGSS.MS-PS4-2

How are we able to see through a transparent medium?

• Because it transmits light

• Because it blocks light

• Because it absorbs light

• Because it reflects light

Tags

NGSS.MS-PS4-2

Which of the following is a common phenomenon associated with light?

• Formation of shadows

• Twinkling of stars

• Sound waves

• Magnetic fields

Tags

NGSS.MS-PS4-2

What causes the beautiful colors of a rainbow?

• Reflection of light

• Transmission of light

• Absorption of light

• Refraction and dispersion of light

What conclusion can be drawn about the travel of light?

• Light does not travel

• Light travels in straight lines

• Light travels in zigzag lines

• Light travels in curved lines

Tags

NGSS.MS-PS4-2

What phenomena will be studied in the chapter using the straight-line propagation of light?

• Reflection and refraction

• Transmission and absorption

• Diffusion and absorption

• Reflection and diffusion

Tags

NGSS.MS-PS4-2