UV Light Revision

Convert 350mm to m.

• 0.350m

• 3.50m

• 350 000m

• 0.000350

Convert 568 μm to m

• 0.000 568m

• 0.568m

• 568m

• 568 000m

Convert 192 nm to m.

• 0.000 000 192m

• 0.000 192m

• 0.192m

• 192m

For electromagnetic waves travelling through a vacuum, if you increase the wavelength, what happens to the frequency?

• nothing

• it increases too

• it decreases

Which of these is a danger of UV radiation? (tick all that apply)

• sun burn

• increased risk of skin cancer

• eye damage

• premature aging of the skin

Which of the following is NOT a use of UV radiation?

• disinfecting bottled water

• identifying security markings

• fluorescence

• internal body imaging

Which of the following has the shortest wavelength / highest frequency?

• UVA

• UVB

• UVC

Which of the following has the most energy, so would be the most ionising?

• UVA

• UVB

• UVC

What can happen to electrons when they absorb UV radiation?

• nothing

• they fall to a lower energy level / shell

• they jump to a higher energy level / shell

• they fall into the nucleus

Which of the following can result in visible light being emitted from an atom?

• Electrons falling back to a lower energy level / shell

• Electrons jumping up to higher energy levels / shells

• Electrons being removed from an atom

• Electrons being added to an atom