Relating a Star's Brightness to Luminosity

Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Using your knowledge of how distance, apparent brightness, and luminosity relate to one another, then if an imaginary star were to stay the same distance away from us, but all of a sudden we observed a decrease in its apparent brightness, then what must be true?

Create Your Account To Take This Quiz

As a member, you'll also get unlimited access to over 79,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Try it risk-free
Try it risk-free for 30 days. Cancel anytime
Already registered? Log in here for access

1. Using your knowledge of how distance, apparent brightness, and luminosity relate to one another, then if an imaginary star were to move farther away from us, yet maintain its apparent brightness at the same time, then:

2. If you triple the distance to a light source, then the apparent brightness will:

Create your account to access this entire worksheet
A Premium account gives you access to all lesson, practice exams, quizzes & worksheets
Access to all video lessons
Quizzes, practice exams & worksheets
Certificate of Completion
Access to instructors
Create an account to get started Create Account

About This Quiz & Worksheet

Brightness and luminosity are variable attributes of light sources and this quiz and worksheet can help you learn and understand more about both. See how these factors relate to stars and measuring the power of light.

Quiz & Worksheet Goals

These lesson tools will test you on:

  • Concept of apparent brightness
  • The relationship between distance & light
  • Measuring energy
  • Practical application using light & distance scenarios

Skills Practiced

The quiz and worksheet will gauge your skills of:

  • Reading comprehension - ensure that you draw the most important information from the related star brightness and luminosity lesson
  • Defining key concepts - ensure that you can accurately define main topics, such as watt
  • Knowledge application - use your knowledge to answer questions about light and distance

Additional Learning

For more information on this topic, complete the accompanying lesson called Relating a Star's Brightness to Luminosity. This lesson will cover these objectives:

  • Understand how energy is measured
  • Discover the Inverse Square Law
  • Understand how distance relates to visible light
  • Apply knowledge of luminosity, distance & brightness to different examples
Support