Understanding Lasers

Understanding Lasers

Assessment

Interactive Video

Physics, Science

6th - 10th Grade

Practice Problem

Hard

Created by

Lucas Foster

FREE Resource

The video explains how lasers work, highlighting that laser beams are high-energy light beams with photons of the same frequency. It describes how atoms can absorb energy and release photons, creating a 'choir of light.' The process of creating a laser involves excited atoms, mirrors, and an initial photon. The video also touches on the history of lasers, noting their initial perception as a 'solution in search of a problem' and their widespread use today.

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6 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is unique about the photons in a laser beam?

They all have the same frequency.

They are high-energy particles.

They have different frequencies.

They are invisible to the human eye.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when a photon with the right frequency interacts with an excited atom?

The atom releases a perfect copy of the photon.

The atom absorbs the photon and remains excited.

The atom becomes unstable.

The atom changes its energy level.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT needed to create a laser beam?

A prism

A photon to start with

Mirrors

A box of excited atoms

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the original photon multiplied in a laser setup?

By splitting into multiple photons

By bouncing between mirrors and atoms

By being absorbed and re-emitted by atoms

By passing through a series of lenses

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the initial perception of lasers when they were first built?

A groundbreaking discovery

A dangerous technology

A solution in search of a problem

A tool for scientific research only

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In what year was the first laser built?

1980

1970

1960

1950

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