What does LASER stand for?

• Light Amplification by Stimulated Emission of Radiation
• Light Applied Scientifically to Super Rangers  
• Local Access Service & Equipment Records
• Light Amplification by Stimulated Energy of Radiation

Tags

NGSS.MS-PS4-2

Which of the following is an advantage of laser?

• Low aspect ration
• High speed and accuracy
• Contact technique 
• All of the above 

which of the following is a property of laser

• monochromatic 
• coherence
• high energy 
• all of the above

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What direction does a LASER move in 

• a straight light
• backwards
• a wave
• none

what is laser made from

• photons
• energy
• light
• wind

Which of the following is a property of LASERS?

• Coherence
• Reflection
• Refraction
• Deflection

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

NGSS.HS-PS4-5

what keeps the photon bouncing back ?

• a mirror at the end tube
• a plastic curved-in piece at the end of the tube
• a mirror at the middle of the tube 
• a mirror at the rear of the tube

Tags

NGSS.MS-PS4-2

Which of the following indicates the application of laser shown?

• CD
• Laser eye surgery
• Cutting metal
• Laser show

Tags

NGSS.HS-PS4-3

LASER travels at speed of

• Sound
• Cars
• Light
• Planes

When electrons return to their ground state, the electrons emit _______.    

• Photons
• Sound
• LASER
• Fusion

Tags

NGSS.HS-PS4-3