Available Answers

1. 1.

   Carefully observe the given image and discuss what is wrong about the picture.

   

2. 2.

   As you know that the density of water is higher than the density of the oil, can you name some more materials that have density less than water? What will happen when you mix oil and water?

3. 3.

   Think of five motions that happen around you. Explain how these motions are useful in various aspects of your day-to-day life.

4. 4.

   Three friends, Riya, Sana and Praveen are having a discussion on weight and mass. Their individual views were as follows.

   Riya: Mass is a constant quantity and is denoted by the symbol 'm'. The SI Unit of mass is gram.

   Sana: Weight is not constant and it varies from place to place. The more the mass, the lesser is the attraction between the body and the earth.

   Praveen:  Mass is a constant quantity and weight is not constant. The weight of an object always acts in the vertically upward direction.

   Identify and correct the errors in their conversation.

5. 5.

   An object may be at rest as well as in the motion at the same time. Explain.

6. 6.

   What do you understand by the following graphs?