Yes, there are several online resources and study materials available for Class 7 Science. These resources can help students in understanding and revising the concepts taught in the classroom. Here are some of the popular online resources:

1. EduRev: EduRev is a comprehensive online learning platform that provides study materials, videos, quizzes, and solutions for Class 7 Science. It covers all the topics in a structured manner, making it easier for students to learn and revise.

2. National Council of Educational Research and Training (NCERT) website: NCERT is the official organization that develops the curriculum and textbooks for Class 7 Science. The NCERT website provides free access to the NCERT textbooks, which can be downloaded in PDF format. Additionally, the website also offers supplementary materials, such as question banks and sample papers.

3. Meritnation: Meritnation is another popular online platform that offers study materials, videos, interactive exercises, and live classes for Class 7 Science. It covers the entire syllabus and provides a personalized learning experience.

4. BYJU'S: BYJU'S is a well-known online learning platform that provides engaging video lessons, interactive quizzes, and practice tests for Class 7 Science. The content is designed to make learning fun and interesting.

5. Khan Academy: Khan Academy offers a wide range of educational resources, including video lessons, practice exercises, and quizzes for Class 7 Science. The platform follows a step-by-step approach, making it easier for students to grasp complex concepts.

6. Vedantu: Vedantu is an online tutoring platform that provides live classes, study materials, and practice tests for Class 7 Science. The platform offers interactive sessions with expert teachers, allowing students to ask questions and clarify doubts in real-time.

7. YouTube: YouTube is a treasure trove of educational videos on various topics of Class 7 Science. Many educators and channels create high-quality content that simplifies complex concepts and provides visual aids for better understanding.

It is important for students to choose reliable and trustworthy online resources to ensure accurate and relevant information. These platforms can be used as supplementary materials alongside textbooks and classroom teachings to enhance the learning experience. Remember to cross-reference the information and seek guidance from teachers or parents whenever necessary.