You will learn
- Say that sound is caused by vibrations.
- Observe vibrations.
- Explain how loud and quiet link to vibrations.
- Describe how sound reaches ears.
Version 0.2 · expanded edition · built from cited public sources Content is based on the official frameworks and sources listed under Sources and standards. No official endorsement is claimed. Written in the style of common primary school assessments. No exam result is promised.
Student lesson
- Sound is made by vibrations.
- Vibrating objects make air vibrate.
- Vibrations reach our ears.
- Bigger vibrations make louder sounds.
Words to know
a quick back-and-forth movement
to move back and forth quickly
the part of the body we hear with
to move from one place to another
1. Discover: The ruler twang
Kojo holds a ruler over the edge of his desk and flicks the end. The ruler wobbles fast and makes a buzzing sound. When he stops it with his hand, the sound stops. “The ruler is vibrating,” says his teacher. “That is what makes the sound.”
Think: What happened when he stopped the ruler?
2. Understand: Vibrations
Idea 1: What is vibration?
A vibration is a quick back-and-forth movement. A guitar string, a drum skin and a ruler all vibrate when they make sound.
Idea 2: Reaching our ears
The vibrating object makes the air around it vibrate. The vibrations travel through the air to our ears.
Idea 3: Loud and quiet
Bigger vibrations make louder sounds; smaller vibrations make quieter sounds. When the vibration stops, the sound stops.
3. Worked examples
Example 1 (I show you): Feel
Hand on throat.
- Say “ah”.
- Feel buzzing.
- Vibration.
Answer: Your throat vibrates when you speak.
Example 2 (We do it together): Stop
Hand on a bell.
- Sound stops.
- Vibration stops.
- No sound.
Answer: No vibration means no sound.
Example 3 (You try): Louder
Hit drum harder.
Show the steps and answer
- Bigger vibration.
- Louder.
- Link.
Answer: Bigger vibrations make louder sound.
Did you know?
Bats and dolphins use sound vibrations to find their way, a method called echolocation.
Why this matters
Understanding vibrations helps us make instruments and protect hearing.
4. Explore: Feel the vibrations
Feel vibrations on throat, drum and rubber-band guitar.
- Touch your throat and hum.
- Tap a drum with rice on top.
- Pluck a rubber band on a box.
- Describe what you feel.
Think about it: what did you notice?
What did you notice? Sounds made things shake.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- Sound is made by ___.
- A vibration is a quick ___ and forth.
- Vibrations travel through the ___.
- When it stops, the sound ___.
Guided practice
Question 1. What makes sound?
Vibrations.
Question 2. What is a vibration?
Quick back-and-forth movement.
Question 3. What carries it to ears?
Air.
Independent practice
Level 1: Start
- What makes sound?
- What is a vibration?
- What carries it to ears?
- What happens when vibration stops?
- Name something that vibrates.
Level 2: Grow
- Why does rice jump on a drum?
- Why does a thin ruler make a high sound?
- Why do we feel throat buzzing?
Level 3: Stretch
- Draw a vibrating string.
- Explain how we hear.
- Make a rubber band guitar.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
What vibrating things are near you?
Show a sample answer
Radios and phones.
Another one. Tell a family member one thing from this lesson. Use the words you learned.
Show a sample answer
A clear sentence that uses at least one word from Words to know.
7. Common mistakes
Fix: They travel in vibrations.
Fix: By vibrations.
8. Lesson summary and revision card
- I can say that sound is caused by vibrations.
- I can observe vibrations.
- I can explain how loud and quiet link to vibrations.
- I can describe how sound reaches ears.
9. Check and master
Answer all 14 questions. You will see feedback after each one.
Your result appears here after you answer every question.
10. Key takeaways
- Sound is made by vibrations.
- Vibrating objects make air vibrate.
- Vibrations reach our ears.
- Bigger vibrations make louder sounds.
11. Next lesson
Next lesson: Sound and distance. Keep going with the next idea in this course.
Exam practice
These questions are written in the style of common school and international primary assessments. Try them on your own, without looking back. Then check your answers in the marking guide. The marks are shown in brackets.
- What makes sound? [1 mark]
- What is a vibration? [1 mark]
- How does sound reach our ears? [2 marks]
- Link loud sound to vibration. [2 marks]
- Describe a test. [3 marks]
Total: 9 marks.
Marking guide and model answers
- Vibrations [1]
- Quick back-and-forth movement [1]
- Air vibrates [1]; reaches ears [1]
- Bigger vibration [1]; louder [1]
- Object [1]; feel or see [1]; conclusion [1]
Score guide: 8 to 9 = secure. 6 to 7 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.
Printable worksheet
- What makes sound?
- What is a vibration?
- What carries it to ears?
- What happens when vibration stops?
- Name something that vibrates.
- Why does rice jump on a drum?
- Why does a thin ruler make a high sound?
- Why do we feel throat buzzing?
- Draw a vibrating string.
- Explain how we hear.
Homework
Feel vibrations on your throat, a speaker and a drum at home. Draw them.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What makes sound? | Vibrations. | 1 |
| 2. What is a vibration? | Quick back-and-forth movement. | 1 |
| 3. What carries it to ears? | Air. | 1 |
| 4. What happens when vibration stops? | Sound stops. | 1 |
| 5. Name something that vibrates. | Guitar string. | 1 |
| 6. Why does rice jump on a drum? | The skin vibrates. | 1 |
| 7. Why does a thin ruler make a high sound? | Faster vibrations. | 1 |
| 8. Why do we feel throat buzzing? | Vocal vibrations. | 1 |
| 9. Draw a vibrating string. | Labelled. | 1 |
| 10. Explain how we hear. | Vibrations reach ears. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Vibrations.; 2 Quick back-and-forth movement.; 3 Air.; 4 Sound stops.; 5 Guitar string.. Level 2: 1 The skin vibrates.; 2 Faster vibrations.; 3 Vocal vibrations.. Level 3: 1 Labelled.; 2 Vibrations reach ears.; 3 Test..
Quiz answers: 1 B, 2 C, 3 A, 4 B, 5 C, 6 A, 7 B, 8 C, 9 A, 10 B, 11 C, 12 A, Challenge 1 B, Challenge 2 C.
Mastery and remediation
| Objective | Bronze (Developing) | Silver (Proficient) | Gold (Advanced) |
|---|---|---|---|
| O1 Say that sound is caused by vibrations | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O2 Observe vibrations | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O3 Explain how loud and quiet link to vibrations | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O4 Describe how sound reaches ears | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
Courseversity badge thresholds (overall quiz score): Gold = 90–100%; Silver = 80–89.9%; Bronze = 70–79.9%. A badge is never a full record of progress.
If a learner struggles
- Find the misconception: “Sounds travel in no way.” They travel in vibrations.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Explain how sound is made and heard.
- Guided practice: work through one example together and let the learner try the next one.
- Reassess: use the quiz again or the worksheet.
- Move on when the learner shows Silver-level evidence independently.
For parents and guardians
In this lesson your child discovers that sound is made by vibrations. You do not need to be an expert to help.
- Hum with a hand on the throat.
- Ask, “What is shaking?”
- Make a rubber band guitar.
- Ask “how do you know?” after each answer, and listen.
- Praise effort, not only right answers. Mistakes are how we learn.
- Ten to fifteen minutes a day is better than one long session.
Teacher package
1–5. Objectives, prerequisites, materials, preparation, duration
Lesson objectives. Learners will: say that sound is caused by vibrations; observe vibrations; explain how loud and quiet link to vibrations; describe how sound reaches ears.
Prerequisite knowledge. Grade 1 ideas: light and shadows, sounds around us and what makes sound.
Materials. Rulers, rubber bands, boxes, drums, rice and trays. Low-resource options: use chalk or charcoal on a board or wall, drawings in the sand, and objects from the classroom instead of printed materials.
Preparation. Prepare vibration kits. Prepare trays.
Suggested duration. 45–60 minutes. It can be split into two shorter sessions.
6–9. Teaching procedure, explanation notes, guided and independent activities
Introduction (5 min). Hum with a hand on the throat and ask, “What do you feel?”
Explanation (10 min). Teach vibrations.
Guided activity (10 min). Learners explore.
Independent activity (10 min). Learners explain.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. What is moving? How does the sound reach you?
Teacher explanation notes. Start with real objects and safe, hands-on observation. Then talk about what was seen, then draw and write. Always say “how do you know?”. Keep to the safety notes, and use local, safe materials.
10–12. Differentiation, formative assessment, common misconceptions
Support. Use real objects and pictures, short sentences and a partner. Let learners point, show or draw instead of writing. Extension. Ask learners to find a new example at home and explain how they know.
Formative assessment. Listen to learners read and explain, ask “how do you know?”, and check the independent work.
Misconceptions. “Sounds travel in no way.” They travel in vibrations.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz, the 9-mark exam practice and the worksheet on this page. All answers and marking guides are in the answer sections above. Re-check every answer before use.
16–19. Remediation, enrichment, homework, teacher reflection
Remediation. Explain how sound is made and heard. Enrichment. Look for one new example near your home or school, draw it and explain it to someone. Homework. See above.
Teacher reflection. After teaching, record: which ideas learners understood; which misconceptions occurred; which activities worked; which learners need more practice; and what to improve next time.
Sources and standards
This lesson is based on the sources below, and no official endorsement is claimed. Reference starting points: Next Generation Science Standards, Cambridge Primary Science and the IB Primary Years Programme. Where a standard code is named, it points to the official framework.
Research used to shape this lesson. Courseversity Science curriculum, Grade 2 Unit 9, topic 5; Next Generation Science Standards, waves and energy (1-PS4 light and sound foundations); Cambridge Primary Science Stage 2, light, sound and energy; IB Primary Years Programme, how the world works. These sources informed the lesson.