# Refraction

In this lesson we will be looking at what may happen when a wave moves from one medium to another. We will look at how we can measure the effect of refraction and also how to explain it.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

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## Q5.A photograph of a length of string shows 4 waves. If the string has a length of 42 cm and the vibration generator is set to 3 Hz. What is the wave speed of the waves on the string?

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

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3/5

4/5

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Refraction

This quiz will test your understanding of the topic in the lesson, and prior knowledge from earlier in this topic.

## Q1.What are the two requirements for refraction?

Select two (2) boxes

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## Q4.When a wave slows down as it crosses a material interface, which of the following is true?

Select two (2) boxes

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## Q5.Revision: What is the wavelength of the wave?

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Refraction

This quiz will test your understanding of the topic in the lesson, and prior knowledge from earlier in this topic.

## Q1.What are the two requirements for refraction?

Select two (2) boxes

1/5

2/5

3/5

## Q4.When a wave slows down as it crosses a material interface, which of the following is true?

Select two (2) boxes

4/5

5/5

# Lesson summary: Refraction

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