Scienece assignment (Class 7)

 

1.     Name the process by which green plants prepare their food.

2.     Which gas is released during photosynthesis?

3.     Define physical change with one example.

4.     What are vertebrates? Give two examples.

5.     Why do objects float or sink in water?

6.     Name the three states of matter.

7.     What is soil erosion, and mention one cause of it.

8.     Which organ in the human body pumps blood?

9.     What type of energy is stored in food?

10.  Why should we conserve forests?