Force, Energy and Simple Machines

A pair of tongs is an example of _______

• Lever

• Inclined plane

• Wedge

• Screw

Ramp at the hospital is an example of ________

• Pulley

• Wedge

• Inclined plane

• Screw

Wheel connected to a rod is called ________

• Screw

• lever

• Pulley

• Wheel and axle

Where can you find a pulley?

• Elevators

• Wells

• Cranes

• All of these

What can hold a piece of wood firmly?

• Nail

• Screw

• Screwdriver

• None of these

__________ force is used by machines.

• Muscular

• Elastic

• Mechanical

• Friction

The force exerted by a magnet is called _________

• Magnetic

• Electrostatic

• Gravitational

• Muscular

On what surface will it be easy to slide?

(a)  

A moving vehicle has (a)   energy due to its motion

Energy change in a Microwave

• Electrical energy - Mechanical energy

• Electrical energy - Heat energy

• Mechanical energy - Light energy

• Sound energy - Heat energy