This lesson explores the nature of light, discussing its wave-particle duality, the photoelectric effect, and the electromagnetic spectrum. It explains how to calculate wavelength, frequency, and energy of light, and differentiates between luminous and illuminated objects. The lesson includes practical problem-solving examples and suggests further resources for deeper understanding.

What is a key characteristic of waves that helps differentiate them from particles?

• They move in straight lines.

• They always travel at the speed of light.

• They can diffract and create patterns.

• They do not interact with barriers.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

What did Thomas Young's experiment demonstrate about the nature of light?

• Light travels faster than sound.

• Light is composed of particles only.

• Light does not interact with barriers.

• Light creates a diffraction pattern, indicating it behaves as a wave.

Tags

NGSS.HS-PS4-3

What phenomenon did Einstein explain that showed light behaves as particles?

• Diffraction

• Reflection

• Refraction

• Photoelectric effect

Tags

NGSS.HS-PS4-3

What are the particles of light called?

• Photons

• Neutrons

• Protons

• Electrons

Tags

NGSS.HS-PS4-3

Which type of electromagnetic radiation has the highest energy?

• Gamma rays

• Microwaves

• Radio waves

• Ultraviolet rays

Tags

NGSS.HS-PS4-4

What is the relationship between the frequency and energy of light?

• They are inversely proportional.

• They are directly proportional.

• They are unrelated.

• They are equal.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What symbol is commonly used to represent wavelength?

• C

• H

• Lambda (λ)

• Nu (ν)

Tags

NGSS.HS-PS4-1

How is the speed of a wave calculated?

• By adding wavelength and frequency.

• By subtracting frequency from wavelength.

• By multiplying wavelength by frequency.

• By dividing wavelength by frequency.

Tags

NGSS.HS-PS4-1

What type of objects create their own light?

• Luminous objects

• Reflective objects

• Illuminated objects

• Opaque objects

If an object appears red, what color is it most likely absorbing?

• Orange

• Green

• Yellow

• Blue

Tags

NGSS.HS-PS4-3