FOR GRADE 6

What simple machine is this?

• wedge

• inclined plane

• lever

• screw

WHICH OF THE FOLLOWING IS TRUE ABOUT WHEEL AND AXLE?

• The wheel turns a long distance while the axle turns a short distance

• The wheel turns a short distance while the axle turns a long distance

• Both wheel and axle turn the same distance

• The wheel moves in a greater magnitude while axle has no particular distance

WHAT CLASS OF LEVER IS THIS?

• FIRST CLASS

• SECOND CLASS

• THIRD CLASS

THE FOLLOWING ARE SECOND CLASS LEVERS, EXCEPT_________.

• 
• 
• 
• 

Which of the following has both lever and wedge?

• stairs

• seesaw

• doorknob

• scissors

What reduces machine efficiency?

• Friction

• Gravity

• Air resistance

• Acceleration

When a person is in water, the water pushes the person forward while the person pushes the water back, both affect each other. This is an example of___________.

• 1st law of motion

• 2nd law of motion

• 3rd law of motion

What is the function of an inclined plane?

• To lift heavy objects vertically

• To reduce the effort needed to lift objects

• To increase the distance over which a force must be applied

• To change the direction of a force

Which simple machine is a doorknob an example of?

• Lever

• Pulley

• Wheel and axle

• Screw

What is the principle behind a pulley system?

• It reduces the amount of work needed to lift an object

• It increases the speed at which an object is lifted

• It changes the direction of the force applied

• It allows for multiple people to lift an object simultaneously