J.J. Thomson's Cathode Ray Tube (CRT): Definition, Experiment & Diagram


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question 1 of 3

The cathode and anode in a cathode ray tube carry which of the following charges?

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1. What was discovered about cathode rays and the electric charge in a CRT with J. J. Thomson's first experiment?

2. In J. J. Thomson's 2nd experiment, he discovered that the charge in the cathode rays was negative. How did he find this out?

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About This Quiz & Worksheet

Cathode ray tubes (CRTs) enabled the discovery of electrons. This quiz and worksheet combination will help you improve your understanding of the experiments that helped J.J. Thomson discover the existence of electrons. The questions on the quiz will help you test your understanding of the composition of a CRT and the experiments Thomson performed using them.

Quiz & Worksheet Goals

In these assessments, you'll be tested on:

  • How CRTs work
  • The three experiments that Thomson performed
  • The discovery of the electron

Skills Practiced

This quiz and worksheet will allow you to test your skills in the following areas:

  • Reading comprehension - ensure that you draw the most important information about CRTs and J.J. Thomson's experiments from the related lesson
  • Critical thinking - apply relevant concepts to examine information about electricity in a different light
  • Interpreting information - verify that you can read information regarding Thomson's experiments and his findings and interpret it correctly
  • Knowledge application - use your knowledge to answer questions about Thomson's experiments and what they revealed about electricity and CRTs

Additional Learning

To learn more about CRTs, review the accompanying lesson called J.J. Thomson's Cathode Ray Tube (CRT): Definition, Experiment & Diagram. This lesson covers learning objective such as:

  • Define CRTs
  • Describe how CRTs work
  • Describe and differentiate between J.J. Thomson's three experiments
  • Understand how the electron was discovered during Thomson's experimentation with CRTs