The blue section of the wave is measuring _________________.

• wavelength
• crest
• trough
• amplitude 

Tags

NGSS.HS-PS4-1

Certain blue lights have a frequencey of 6.91x10¹⁴Hz. What is the wavelength? (λ=c/v)

• 4.34x10²¹
• 4.34x10^-21
• 4.34x10^-7
• 2.07x10²³

Tags

NGSS.HS-PS4-1

A light has a wavelength of 5.06x10^-7m. What is the frequency of the light? What is the color of light? (v=c/λ)

• 16.87Hz, Red
• 5.93Hz, Orange
• 5.93x10^-14Hz, Blue
• 5.93x10¹⁴Hz, Green

Tags

NGSS.HS-PS4-1

When atoms _____________ energy, their electrons move to higher energy levels. These electrons _____________ energy by emitting light when they return to lower energy levels.

• lose, absorb

• absorb, lose

• lose, lose

• absorb, absorb

Tags

NGSS.HS-PS1-2

Each element on the periodic table can be identified by its

• classification as a solid, liquid or gas.

• location on the table.

• ability to react to form compounds.

• unique spectral "fingerprint."

Tags

NGSS.HS-PS1-1

Which wave in the diagram has the greatest wavelength?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS4-1

Which property of light decreases as its wavelength increases?

• frequency

• speed

• intensity

• amplitude

Answer explanation

The property of light that decreases as its wavelength increases is frequency. This is because the speed of light is constant, so if the wavelength increases, the frequency must decrease to compensate. This is based on the formula for wave speed, which is speed equals frequency times wavelength. Therefore, the correct answer is frequency.

Tags

NGSS.HS-PS4-1

What is the unit of frequency in the electromagnetic spectrum?

• hertz

• watt

• volt

• ampere

Answer explanation

The unit of frequency in the electromagnetic spectrum is hertz. Hertz (Hz) is used to measure the number of cycles per second of a wave, such as electromagnetic waves. The other options, watt, volt, and ampere, are units of power, electric potential, and electric current, respectively, and are not related to frequency.

Tags

NGSS.HS-PS4-1

What is the unit of wavelength in the electromagnetic spectrum?

• meters

• inches

• kilometers

• seconds

Answer explanation

The unit of wavelength in the electromagnetic spectrum is meters. Wavelength is a measure of the distance between two consecutive points of a wave, such as the distance between two consecutive crests or troughs. In the electromagnetic spectrum, this distance is typically measured in meters, although other units like nanometers or angstroms may be used for specific ranges of the spectrum.

Tags

NGSS.HS-PS4-1

The relationship between wavelength and frequency is λ=c/f.  Calculate the wavelength of light that has a frequency of 5.2 x 10¹² Hz. (The ones with dots go on the formula.)

d

e

f

g

h

i

5.8 x 10 -7 m

c=5.19 x 10 14 m

v=1.56 x 10 23 m

Tags

NGSS.HS-PS4-1