Light and Sound Waves

When scientists talk about white light, they are MOST likely referring to light that is

• a combination of all of the colours in the visible region of the electromagnetic spectrum.

• the unabsorbed refracted light produced by a black light.

• the narrow band corresponding to white light in the electromagnetic spectrum.

• a combination of all the types of electromagnetic radiation.

Which colour of light is produced when all of the colours of visible light in the electromagnetic spectrum are combined?

• gray

• white

• black

Which of the following statements BEST describes visible light?

• Light is an electromagnetic wave of a single frequency that makes up a small part of the electromagnetic spectrum.
• Light is an electromagnetic wave of a single frequency that makes up most of the electromagnetic spectrum.
• Light includes a range of electromagnetic waves that make up a small part of the electromagnetic spectrum.
• Light includes a range of electromagnetic waves that make up most of the electromagnetic spectrum.
  

Visible light is which type of wave?

• seismic
• mechanical
• longitudinal
• electromagnetic

Which of these describes a small range in the electromagnetic spectrum?

• gravity
• radiation
• electricity
• light

Which statement BEST describes the relationship between visible light and the electromagnetic spectrum?

• Visible light and the electromagnetic spectrum are different names for the same phenomenon.
• Visible light occupies about half of the electromagnetic spectrum.
• Visible light is a narrow band in the electromagnetic spectrum.
• Visible light and the electromagnetic spectrum have a small area of overlap.
  

Light waves are arranged in the electromagnetic spectrum by

• wavelength and brightness.

• speed and color.

• brightness and colour.

• wavelength and frequency.

Which of these colors of visible light has the shortest wavelength?

• red
• green
• violet
• yellow

Scientists use large optical telescopes to obtain information about the planets in the solar system. What wavelengths of electromagnetic radiation provide this information?

• gamma radiation
• infrared radiation
• radio waves
• visible light
  

As the loudness of a sound wave increases, which will also increase?

• amplitude
• frequency
• velocity
• wavelength