← All lessons
🔬 Science - Class 9
EN
नेपाली
Home
›
Class 9
›
Science
›
Unit 10: Wave
›
Wave
Unit 10 · Wave
Wave
Science
Subject
8 min
Estimated read
📖
Note
📚
Vocabulary & Grammar
🔬
Activity
⭐
Points to Remember
✏️
Practice Questions
🧪
Practice Test
🖥️
Presentation
Question 1 of 12
1
What is a wave?
Only the rings seen on the surface of water
The process of molecules travelling from one place to another
A periodic disturbance that transmits energy
The steady flow of air in one direction