# Class 9 Science NCERT: Force, Motion, Tissues, Atoms Quiz

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## 10 Questions

### Which topic in the Class 9 NCERT curriculum focuses on the smallest unit that makes up every element and the formation of molecules?

Atoms and Molecules

### What is the primary function of epithelial tissues in the body?

Form the outermost layer of the skin

### What is the role of atoms in forming molecules?

Atoms bond together to create molecules

Molecules

### What provides students with a solid foundation for more advanced chemistry topics in the future?

Learning about covalent and ionic bonding

### What does Newton's first law of motion state?

An object at rest tends to remain at rest unless acted upon by an unbalanced force

### In biology, what are tissues made up of?

Similar cells that work together to perform a specific function

### Which type of tissue is responsible for providing support and structure in the human body?

Connective tissue

### What happens to an object's motion according to Newton's second law of motion?

The object accelerates in the direction of the net force applied to it

Isaac Newton

## Force and Laws of Motion

Ever wondered why you can't walk on ice like you do on a solid surface? Or why a car's acceleration increases when you press harder on the gas pedal? The answers to these questions lie in the realm of Force and Laws of Motion, a fundamental part of our understanding of the physical world.

Through the NCERT curriculum, students are introduced to Sir Isaac Newton's laws of motion, which describe the relationship between an object's motion, mass, and force. For instance, Newton's first law, the Law of Inertia, states that an object at rest tends to remain at rest and an object in motion tends to remain in motion with the same velocity in a straight line unless acted upon by an unbalanced force.

In the Force and Motion chapter, students also learn about Newton's second and third laws, which lay the foundation for understanding the relationship between mass, force, and acceleration.

## Tissues

In the world of biology, tissues are a collection of similar cells that work together to perform a specific function. Tissues are the building blocks of organs, and understanding their structure and functions is vital to comprehending the human body. The NCERT textbook covers the five main types of tissues: epithelial, connective, muscle, nerve, and glandular.

In this chapter, students learn about the structures, functions, and characteristics of each type of tissue, along with their specific roles in the body. For example, epithelial tissues form the outermost layer of the skin, act as a protective barrier, and serve as a boundary between the body and the external environment.

## Atoms and Molecules

The concept of atoms and molecules, which forms the foundation of chemistry, is another essential part of the Class 9 NCERT curriculum. Atoms are the smallest unit that makes up every element and combine to form molecules. In this chapter, students are introduced to the periodic table and learn about the properties of elements and their role in chemical reactions.

The chapter also covers the structure of atoms, including the atomic nucleus, protons, neutrons, and electrons, as well as the concepts of covalent and ionic bonding. Understanding these topics provides students with a solid foundation for more advanced chemistry topics in the future.

In summary, the Class 9 NCERT curriculum delves into the concepts of Force and Motion, Tissues, and Atoms and Molecules, exploring the fundamental building blocks of our physical and biological world. By studying these topics, students acquire the knowledge and skills to understand the world around them and appreciate the interconnectedness of various scientific disciplines.

Explore the fundamental concepts of Force and Laws of Motion, Tissues, and Atoms and Molecules as per the Class 9 NCERT curriculum. Test your knowledge on Sir Isaac Newton's laws of motion, different types of tissues in the human body, and the basic structure of atoms and molecules.

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