Sharp as a Laser

What is one of the common uses of lasers in science fiction movies?

• Creating intense heat

• Streaking across space

• Cutting through metal and fabric

• Decoding information stored in CDs

How are lasers used in decoding information stored in CDs, DVDs, and bar codes?

• By breaking up molecules

• By spreading out in every direction

• By amplifying light waves

• By creating intense heat

What is the main job of lasers in medicine?

• Creating intense heat

• Aiming at very specific targets

• Making clean and precise cuts

• Sealing up blood vessels

How does a laser beam work similar to sunlight passing through a magnifying glass?

• By focusing light onto one tiny spot

• By creating intense heat

• By breaking up molecules

• By spreading out in every direction

What is the main difference between white light from a bulb and light from a laser?

• White light is all the wavelengths of color combined

• Light from a laser is a combination of heat and light

• Light from a laser is all the different wavelengths spreading out

• White light is a single wavelength of light

What happens inside a laser to amplify light waves?

• Light creates intense heat

• Light breaks up molecules

• Light spreads out in every direction

• Light bounces back and forth between mirrors

Why are lasers considered precise and clean tools in medical procedures?

• They create intense heat

• They prevent bleeding

• They seal up blood vessels

• They carry bacteria and germs

How do lasers used in eye surgery make cuts without damaging delicate tissues?

• By sealing up blood vessels

• By creating intense heat

• By breaking up molecules

• By spreading out in every direction

What is the purpose of cauterizing the burnt tissue surrounding a cut made by a laser?

• To amplify light waves

• To spread out in every direction

• To create intense heat

• To prevent bleeding

What is the advantage of using lasers in medical procedures over metal cutting tools?

• Lasers prevent bleeding

• Lasers carry bacteria and germs

• Lasers create intense heat

• Lasers are imprecise