EM Waves

The main source of electromagnetic radiation on Earth is:

• The Moon

• The Sun

• The Stars

• Artificial satellites

Which EM wave is used in cell phone communication?

• Gamma rays

• Infrared

• X-rays

• Microwaves

Which EM wave is used in TV remote controls?

• Ultraviolet

• Microwaves

• Infrared

• Gamma rays

The energy of an electromagnetic wave is carried by its:

• Electric and magnetic fields

• Amplitude

• Frequency

• Wavelength

Which EM wave is mostly absorbed by the ozone layer in Earth’s atmosphere?

• Infrared

• Ultraviolet

• Radio waves

• Gamma rays

Which EM wave is used to detect broken bones?

• X-rays

• Infrared

• Gamma rays

• Radio waves

Which type of electromagnetic wave is used in thermal imaging cameras?

• Gamma rays

• Infrared

• Microwaves

• X-rays

Which EM wave is used in microwave ovens to heat food?

• Radio waves

• Infrared

• Microwaves

• Gamma rays

Which type of electromagnetic wave has the longest wavelength?

• Gamma rays

• Radio waves

• X-rays

• Ultraviolet

What type of EM wave is responsible for causing sunburn?

• Infrared

• Visible light

• Microwaves

• Ultraviolet