wave and particle properties of light

Which particle is a wave of light?

• proton

• neutron

• electron

• photon

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NGSS.HS-PS4-3

Which type of light has the lowest energy of this group?

• Radio
• Microwave
• Infrared
• Ultraviolet

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NGSS.MS-PS4-1

Which type of light has the largest wavelength of this group?

• X-rays
• Microwave
• Infrared
• Ultraviolet

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NGSS.HS-PS4-1

Which type of light has the smallest frequency of this group?

• red
• yellow
• green
• blue

Tags

NGSS.HS-PS4-1

How does the photoelectric effect demonstrate the particle characteristics of light?

• Light bounces off like a wave, as it shines on the metal surface.

• Light may knock the electrons out of the metal surface as if light were made of particles.

• Intense radiation may (large-amplitude waves) may cause emitted electrons to have more energy.

• The Energy of the electron emitted from metal surface is dependent on the speed of the light that shined on it.

Tags

NGSS.HS-PS4-3

Explain how you we see colors.

• The color we see are the colors absorbed by the object.

• The energy with wavelengths that are too short to see is "bluer than blue".

• When light hits an object, the wavelengths change and are reflected in different direction.

• When light hits an object, some wavelengths are absorbed by that object and the color we see are those that are reflected.

How come we cannot see other EM waves such as infrared, microwave and UV?

• Other lights are invisible and has no color.

• Our eyes are only sensitive and can only detect visible light spectrum.

• Temperature of the surrounding interacts with these lights and makes it difficult for us to notice.

• Ozone layer absorbs most of the energies of these lights thus making it colorless when it reaches the land.

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NGSS.MS-PS4-2

The wave-particle duality of light describes light as...

• a wave only
• a particle only
• both a wave and a particle
• neither a wave nor a particle

Tags

NGSS.HS-PS4-3

The energy of electromagnetic waves comes in pulses called...

• atoms.
• electrons.
• pulsars.
• photons.

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low
• high, high
• low, high
• low, low