Light

The video explores the nature of light, describing it as visible energy that travels in waves. It covers the properties of light waves, such as amplitude, wavelength, and frequency, and explains their place in the electromagnetic spectrum. The video also discusses the unique characteristics of light, including its ability to travel without a medium and its behavior as both waves and particles. It explains how light interacts with objects through transmission, absorption, and reflection, and introduces the concepts of reflection and refraction. Finally, the video delves into the science of color, explaining how different frequencies of light create the colors we see.

What is the primary way light energy travels from its source to us?

• In the form of particles

• In the form of waves

• Through a medium

• By conduction

Which property of light waves is measured by the height of the wave?

• Wavelength

• Velocity

• Frequency

• Amplitude

What is the electromagnetic spectrum?

• A range of mechanical waves

• A range of electromagnetic waves ordered by frequency

• A range of sound waves

• A range of visible light colors

What are light waves sometimes called due to their particle-like behavior?

• Neutrons

• Electrons

• Photons

• Atoms

What happens when light is absorbed by an object?

• It disappears

• It reflects off the object

• It changes into heat

• It passes through the object

What is the term for the bending of light as it enters a new medium?

• Refraction

• Reflection

• Diffraction

• Absorption

Why does a pencil appear bent when placed in a glass of water?

• The pencil absorbs light

• The water distorts the pencil

• Light rays bend as they pass through water

• The pencil actually bends

What are the primary colors of light?

• Red, yellow, blue

• Red, blue, green

• Magenta, cyan, yellow

• Orange, purple, green

How do we perceive the color of an object?

• By the light it emits

• By the light it absorbs

• By the light it transmits

• By the light it reflects

Why is it advisable to wear white clothing on a sunny day?

• White clothing transmits all light

• White clothing changes light into heat

• White clothing reflects all light

• White clothing absorbs all light