Electromagnetic radiation

Which property of light determines its color in the visible spectrum?

• Wavelength (λ)

• Amplitude

• Speed

• Photon count

Tags

NGSS.HS-PS4-1

The energy of a photon is directly proportional to:

• Its wavelength

• Its frequency

• Its mass

• Its speed

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Red light has longer wavelength but lower energy than blue light.

• True

• False

Tags

NGSS.HS-PS4-1

In Bohr’s model, when electrons move from n = 3 → n = 2, they:

• Emit energy as light

• Absorb energy as light

• Stay at the same energy level

• Lose protons

Tags

NGSS.HS-PS4-3

Name one real-world example where emission spectra are used.

• Fireworks, neon lights, analyzing starlight, forensic flame tests

• Measuring air pressure in tires

• Calculating speed of a car

• Determining the boiling point of water

Tags

NGSS.HS-PS4-3

Which transition in hydrogen gives off the highest energy photon?

• n = 5 → n = 4

• n = 4 → n = 3

• n = 3 → n = 2

• n = 2 → n = 1

Tags

NGSS.HS-PS4-3

The Bohr model explains why atoms emit line spectra rather than continuous spectra.

• True

• False

Tags

NGSS.HS-PS4-3

Electrons absorb energy to move to:

• Lower energy levels

• Higher energy levels

• The same energy levels

• The nucleus

Match the following

• The only wavelengths humans can see

• Infrared waves

• Too much can cause sunburn

• X-rays

• Stopped by dense material, like bone

• Ultraviolet Light

• Have the longest wavelengths

• Radio Waves

• Associated with thermal energy

• Visible Light

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

Label the parts of the atom:

a

b

c

d

neutrons

electrons

nucleus

protons

Tags

NGSS.MS-PS1-1