_____11. Which is NOT a simple machine?

A. screw B. lever C. pulley D. fulcrum

_____12. Which is NOT true about wedges?

A. It is a simple machine. B. It cuts or splits an object apart.

C. It has a fixed point called fulcrum. D. It is made up of two inclined planes.

_____13. What do you call a two disc of different diameters mounted so they can rotate around the same axis?

A. Wheel and axle B. inclined plane C. lever D. Screw

_____14. What simple machine has been believed to be used in structuring ancient structures with heavy stones?

A. screw B. lever C. inclined plane D. fulcrum

_____15. What kind of simple machine is a scissor?

A. pulley and wedge C. wedge and lever

B. lever and pulley D. lever and screw

pls po patulong.
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