ESL Science: Sound - ESL worksheet by danmyster - Free Printable

Problem Analysis:

The worksheet focuses on the concept of sound and its properties. The task involves using the provided words to complete sentences, identifying characteristics of sound, and applying knowledge to a practical experiment.

Solution:

#### Part (A): Use the words in the box to finish the sentence
The words in the box are: sound, vibrate, volume, pitch, ear.

1. When objects move back and forth very fast, they _________.
- Answer: vibrate
- Explanation: When objects move back and forth rapidly, they create vibrations, which is the fundamental mechanism for producing sound.

2. Sound causes small parts to vibrate in your _________.
- Answer: ear
- Explanation: Sound waves travel through the air and cause the eardrum and other structures in the ear to vibrate, allowing us to hear.

3. The highness or lowness of a sound is called _________.
- Answer: pitch
- Explanation: Pitch refers to how high or low a sound is, determined by the frequency of the sound wave.

4. _________ describes how loud or quiet something is.
- Answer: volume
- Explanation: Volume (or loudness) refers to the intensity or amplitude of the sound wave, determining how loud or quiet it is.

5. _________ is a form of energy that comes when objects vibrate.
- Answer: sound
- Explanation: Sound is a form of energy produced by vibrating objects, traveling through a medium such as air.

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#### Part 6: Draw a circle around something that is both loud and high.
- Options:
1. A person singing loudly.
2. A trumpet.
3. A violin.

- Analysis:
- A person singing loudly can produce both loud and high-pitched sounds.
- A trumpet typically produces loud and high-pitched sounds.
- A violin can also produce loud and high-pitched sounds.

- Answer: Circle either the trumpet or the violin (both are correct based on the context).

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#### Part 7: Glass Tapping Experiment
- Task: Tick below the glass that will make the highest sound when it is tapped. Why?

- Images of glasses with different water levels:
- Glass 1: Empty
- Glass 2: Partially filled
- Glass 3: Half-filled
- Glass 4: Nearly full

- Analysis:
- When a glass is tapped, the sound produced depends on the amount of water inside. The water affects the vibration frequency of the glass.
- An empty glass vibrates at a higher frequency because there is no water to dampen the vibrations, resulting in a higher-pitched sound.
- As more water is added, the vibrations slow down, producing lower-pitched sounds.

- Answer: Tick the empty glass (Glass 1).
- Why? Because an empty glass vibrates at a higher frequency, producing the highest sound when tapped.

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Final Answers:

1. vibrate
2. ear
3. pitch
4. volume
5. sound
6. Circle the trumpet or violin.
7. Tick the empty glass (Glass 1).
Reason: An empty glass vibrates at a higher frequency, producing the highest sound.

Boxed Final Answer:

\[
\boxed{
\text{1. vibrate, 2. ear, 3. pitch, 4. volume, 5. sound, 6. trumpet/violin, 7. empty glass (Glass 1)}
}
\]