CBSE Class 7 Science Worksheet Set C

 

1 Milk of magnesia contains ------------hydroxide

 

a) Sodium                                     b) Potassium

 

c) Magnesium                                d) ammonium

 

2 Rain fall is measured in

 

a) millimeters                                b) Centimeters

 

c) Foot                                          d) Meters

 

 

3 Percolation water of water is highest in

 

a) Sandy soil                                b) Clayey soil

 

c) Loamy soil                                d) Mixed soil

 

4 Why is it necessary to excrete waste materials?

 

5 What is meant by weathering of rocks? 

 

6 List the factors that affect the climate of a place. 

 

7 a) What will happen if indigestion is not controlled?

 

b) What happens if there is excess of acid in the stomach?

 

8 a) What are tusks? How does an elephant make use of tusks for its survival?

 

b) Why do toucan birds have long beaks?

 

9 a) What is the function of air present in the spaces between the soil particles?

 

b) Why is loamy soil best for growing crops?

 

10 a) Draw the diagram of human heart and label it.

 

b) Draw and explain the diagram of human excretory system.