KSSR Year 3 Science Machine

Which of the following is a simple machine?

• Knife

• Car

• Refrigerator

• Computer

A seesaw is an example of which type of simple machine?

• Lever

• Wheel and axle

• Pulley

• Wedge

What is the main purpose of a pulley?

• To cut objects

• To change the direction of a force

• To move objects in circles

• To stop objects from moving

A screwdriver is an example of which simple machine?

• Lever

• Inclined plane

• Wheel and axle

• Pulley

Which of the following tools uses a wedge?

• Hammer

• Knife

• Scissors

• Both B and C

Which part of the human body acts like a lever?

• Neck

• Elbow

• Finger

• Shoulder

An inclined plane helps by:

• Reducing effort to move an object

• Lifting objects vertically

• Increasing the weight of objects

• Rotating objects faster

Which machine is commonly used to lift water from a well?

• Pulley

• Lever

• Screw

• Wedge

What type of simple machine is a bottle opener?

• Inclined plane

• Lever

• Pulley

• Screw

Which type of machine is a ramp?

• Pulley

• Screw

• Inclined plane

• Wedge