## Lesson Plans: What's the Frequency, Roy G. Biv? Wrap-up Worksheet

# What's the Frequency, Roy G. Biv?

## Wrap-up Worksheet

Name: _________________________________________

Date: ______

Class: _______________________

Today you examined the relationship between wavelength and frequency of light. Fill out this worksheet with the results of your experiments. Each student is responsible for completing this worksheet.

- Compare the wavelengths and frequencies of the three waves. Write about any patterns you notice in their relationship.
- Which color has the shortest wavelength? ____________

Which color has the longest wavelength? _____________ - Which color has the highest frequency? ____________

Which color has the lowest frequency? _____________ - What is the relationship of the red
**wavelength**to the green? __________________________________________

Red to the violet?_________________________________ - What is the relationship of the red
**frequency**to the green? __________________________________________

Red to the violet?_________________________________ - From your answers to the questions
above, name the relationship between
**wavelength**and**frequency**in waves that travel at the same velocity like the waves measured in this lab. - Remember that velocity = distance / time. What was the velocity of the waves in this lab?
- Multiply the wavelength of the red wave by its frequency. Do
this for the blue and green waves also and write the answers
below.
- red ________________
- green ______________
- violet ______________

- What do you notice about the results?
- Write an new equation for the velocity of waves in terms of wavelength and frequency instead of distance and time.

**Note**: the actual velocity of light c = 2.99 x
10^{8} meters per second, but for our purposes in this lab,
it will appear only as fast as the Time Keeper is pulling the adding
machine tape.