1.  _________ occurs when oxygen combines withanother substance (as fuel) and produces fire with heat and light. It s alsoknown as burning.

2. It is a change in position of an object with respectto time.

3. It is a numerical description of how far apart objects are

4.  It is what a clock reads. In classical non-relativistic physics, it is a scalar quantity and the length, mass and charge, is usually described as a fundamental quantity.

5. It is the rate at which an object covers distance.

6. It is a point used to find or describe the location ofsomething.

7. Iron, nails,cans and other metals with iron when exposed to moisture may develop____________.

8. The followingactivities cause a change in matter. Which of these has a bad effect on theenvironment?

9. Many families use wood as fuel in cooking food. What is the bad effect on the environment of this activity?

10. What is the external sex organ of males that has columns  of erectile

tissue filled with blood?

11. Which of the following is considered a ductile material?

12. Which property is being described when it has theability to decompose by microorganisms?

13. Which is TRUE about chemical change?

14. What is the fundamental units of length base on the International Systems of Units (SI)?

15. Which item is  part  of  a  circuit?

16. What is  the  earth's only  natural satellite?

17. Whyis it important to use the 5Rs technique?

18. Whichof the following situations shows chemical change?

19. What are the components of 5Rs techniques?

20. The reaction of iron with moisture and oxygen present in the air is called ________.