EM Spectrum

The part of the electromagnetic spectrum we can detect with our eyes is called

• radio waves
• ultraviolet light
• infra-red

• visible light

Which of these radiations has the longest wavelength?

• Radio waves
• X-rays
• Gamma rays
• Ultraviolet rays

Which of the following is a use for microwaves?

• Treating cancer

• Heating food
• Charging a phone
• Watering plants

Which of these radiations has the shortest wavelength?

• Ultraviolet rays
• Gamma rays
• X-rays
• Infrared rays

Which of the following radiations from the sun can cause sunburn and skin cancer?

• Visible light

• Ultraviolet (UV)

• Radio waves

• Infrared

Which TWO of these radiations can be used to heat food?

• Infrared radiation
• Ultraviolet radiation
• Microwave radiation
• X-ray radiation