17. Which of the following materials is made through hammering after
heating?
A. Bamboo chairs
B. Metal chain
C. Sword/bolo
D. Wheel
18. Bamboo made furniture is a great way to make use of our abundant
bamboo in the Philippines, which process can be applied in making a
bamboo chair?
A. Bending
B. Cutting
C. Hammering
D. all the three process
object
19. What is the most observable change in the physical property of an
when we cut?
A. Size and shape
B. Volume and size
C. Shape and texture
D. Texture and volume
20. When does physical change happen? Physical change happen when
A. Matter changes its property chemically.
B. Matter changes its shape, size and color.
C. Matter changes its property and and also chemically.
D. Matter changes its property but not its chemical nature.