Electromagnetic Waves and Light Behavior

The video provides an overview of light, discussing its nature, sources, visibility, and pathways. It explains the electromagnetic spectrum, the concept of white light, and how light carries energy and heat. Safety precautions for experiments are highlighted, and additional resources are offered for further learning.

What is the primary factor that differentiates one type of electromagnetic wave from another?

• The direction of the wave

• The color of the wave

• The wavelength of the wave

• The speed of the wave

Which of the following is NOT a source of visible light?

• Fireflies

• The Sun

• A light bulb

• A mirror

Why can't we see a laser beam in clear air?

• The laser beam is absorbed by the air

• The laser beam is too dim

• The laser beam is too fast

• The laser beam travels in a straight line without scattering

Which of the following statements about lasers is true?

• Lasers emit a focused beam of light

• Lasers produce light of multiple wavelengths

• Lasers emit light in all directions

• Lasers are dimmer than other light sources

What happens to light when it hits a mirror?

• It is absorbed

• It is reflected

• It is refracted

• It is scattered

What causes a spoon to appear bent when placed in water?

• Absorption

• Refraction

• Diffraction

• Reflection

What is the reason we see a rainbow when sunlight passes through mist?

• The mist creates colors

• The mist reflects the sunlight

• The mist absorbs some colors

• The mist separates the colors in sunlight

How does a solar panel generate energy from light?

• By reflecting light

• By absorbing light and converting it to heat

• By refracting light

• By converting light energy into electrical energy

Why is black paper hotter than white paper when exposed to sunlight?

• Black paper reflects more light

• Black paper absorbs more light energy

• Black paper refracts light

• Black paper is made of a different material

What is the role of prisms in relation to white light?

• They create white light

• They absorb white light

• They separate white light into its component colors

• They reflect white light