Year 9 Light and EM Spectrum Revision

Which of the following is represented by number 1 on the diagram?

• Iris

• Pupil

• Cornea

• Lens

Which of the following correctly describes the pathway of light in the image

• Moving from air into glass

• Moving from glass into air

What is the name of this type of lens?

• Concave

• Diverging

• Convex

What is the name given to the process where white light spreads into its seven different colours after travelling through a prism?

• Reflection

• Diffraction

• Polarisation

• Dispersion

Which region of the electromagnetic spectrum has the longest wavelength?

• Gamma

• X-ray

• Microwaves

• Radio

All EM Radiation can travel in a vacuum.

• True

• False

Toasters, grill and heaters use which region of the EM Spectrum?

• Gamma

• X-ray

• UV

• Infrared

All sounds can travel in a vacuum.

• True

• False

Which medium do sounds travel fastest in?

• Solids

• Liquids

• Gases

• Vacuum

Which of the following are parts of the human ear?

• Pinna

• Ear Drum

• Retina

• Cochlea

• Cornea