Methodical recommendation:
Textbook Questions
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Hearing sound | Other | easy | 2 m. | This exercise contains two key questions and answers, which hold one mark each. The student has to choose the best answers. As an outcome of this exercise, the student will learn about production of sound and condition for hearing sound. |
| 2. | Echo receiver | Other | medium | 2 m. | This exercise contains one key question and answer, which holds three marks. The student has to choose the best answers. As an outcome of this exercise, the student will learn to calculate the depth of the sea. |
| 3. | Ultrasonic waves | Other | medium | 2 m. | This exercise contains one key question and answer, which holds three marks. The student has to choose the best answers. As an outcome of this exercise, the student will learn to calculate the depth of the sea. |
| 4. | Speed of sound in sea water | Other | hard | 2 m. | This exercise contains one key question and answer, which holds three marks. The student has to choose the best answers. As an outcome of this exercise, the student will learn to calculate the distance between the whale and the predator. |
| 5. | Sound absorbent | Other | hard | 2 m. | This exercise contains two key questions and answers, which hold one mark each. The student has to choose the best answers. As an outcome of this exercise, the student will learn about the property of sound waves. |