Answer
7. It is a form of energy that travels in a straight line.
A. light
B. wind
C. sound
D, head
- Light is a energy that have a ray that may it cause to travel it in a straight line.
8. is a triangular shaped tool, and is a portable inclined plane, and one of the six simple machines.
A. wedge
B. pulley
C. Screw
D. lever
- Wedge is an example of triangular shaped tool.. is a portable iñclined plane, and one of the six example machines.
9. It is a simple machine that has a long and thin metal shaft with threads spiralling along its length
A. screw
B. lever
C. pulley
D. wedge
- Screw is simple machine that has long and thin metal shaft with threads spiralling along its length.
10. What simple machine is made by looping a rope over one or more wheels?
A. inclined plane
B. wedge
C. lever
D. pulley
- Inclined plane is some example of simple machine that is made by looping that have a roop over one or more wheels.
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