Understanding Waves and Light

What is the speed of all electromagnetic waves in a vacuum?

Which of the following is a type of electromagnetic wave?

• Water wave

• Visible light

• Seismic wave

What is the relationship between speed, wavelength, and frequency for a wave?

What unit is frequency measured in?

• Metres

• Hertz

• Seconds

• Joules

What colour is typically associated with the emission of light from strontium salts in fireworks?

• Blue

• Green

• Red

• Yellow

Which of the following is NOT a property of waves?

• Frequency

• Wavelength

• Amplitude

• Mass

What is the speed of light commonly abbreviated as in equations?

Which electromagnetic wave has the shortest wavelength?

• Radio waves

• Microwaves

• Gamma rays

• Infrared