1. | vibration |
振動
|
|
2. | solid |
固体
|
|
3. | wonder |
不思議に思う
|
|
4. | tunnel |
トンネル
|
|
5. | nerve |
神経
|
1. | Sound comes through your ears. |
2. | It may be a human voice, the singing of birds, or music. |
3. | But what is sound? |
4. | What happens in your ear when you hear something? |
5. | First, let’s think about what sound is. |
6. | A sound is a vibration and moves in waves. |
7. | We call such waves “sound waves.” |
8. | Sound waves are made when something vibrates. |
9. | Sound waves can move through air, water, and solid materials. |
10. |
Sound waves travel at 343 m/s (meters per second) through the air, but they go faster through water and solid materials. |
11. | You may wonder why. |
12. | If you imagine dominos falling one after another, you’ll see why. |
13. | Now, let’s look into how we hear. |
14. |
When you hear something, sound waves enter your ear and go through a small tunnel in the ear. |
15. | These sound waves pass through the tunnel to the small bones in the middle ear. |
16. | These small bones vibrate. |
17. | Then, in your inner ear, nerves catch the sound waves and send messages to your brain. |
18. | Finally, your brain tells you what kind of sound you are hearing. |
First, let’s think about what sound is. A sound is a vibration and moves in waves. We call such waves “sound waves.” Sound waves are made when something vibrates. Sound waves can move through air, water, and solid materials. Sound waves travel at 343 m/s (meters per second) through the air, but they go faster through water and solid materials. You may wonder why. If you imagine dominos falling one after another, you’ll see why.
Now, let’s look into how we hear. When you hear something, sound waves enter your ear and go through a small tunnel in the ear. These sound waves pass through the tunnel to the small bones in the middle ear. These small bones vibrate. Then, in your inner ear, nerves catch the sound waves and send messages to your brain. Finally, your brain tells you what kind of sound you are hearing.
1. | What is sound? |
Answer: | |
2. | How are sound waves made? |
Answer: | |
3. | Where can sound waves move? |
Answer: | |
4. | How fast can sound travel through air? |
Answer: |
1. | What kind of sound do you usually hear? |
Answer: | |
2. | What sound do you consider relaxing? |
Answer: | |
3. | What kind of sound bothers you? |
Answer: | |
4. | What technologies we use are based on sound? |
Answer: |
Score: | Please check the description of each score. |
1. | strongly disagree | |
2. | disagree | |
3. | undecided | |
4. | agree | |
5. | strongly agree |
Criteria: | Please give the score by looking back on today’s lesson. |
1. | The student was able to use appropriate phrases to express his/her ideas. | |
2. | The student was able to correct the lapses he/she made. | |
3. | The student was able to speak in a confident manner. | |
4. | The student was able to express his/her ideas in a logical way. | |
5. | The student was able to tell his/her thoughts to the tutor properly. | |
6. | The student was able to speak in a consistent way. | |
7. | The student was able to react to the tutor’s questions well. | |
8. | The student didn’t continue the subtle pauses and silence he/she made. | |
9. | The student was able to maintain a fluent and natural flow of speaking. |