1 What can a force do to an object? A Change its shape B Change its speed C Change its direction D All of these
2 Which simple machine helps reduce effort by changing direction of force? A Lever B Pulley C Ramp D Wheel
6 Which force acts even when objects are not touching? A Friction B Muscular force C Gravitational force D Push force
8 What happens when two equal forces act in opposite directions? A Object moves faster B Object changes shape C Object remains at rest D Object flies away
9 Which instrument is used to check if something is vertical? A Thermometer B Plumb line C Ruler D Clock
11 Which force is involved when iron sticks to a magnet? A Gravity B Friction C Magnetic force D Muscular force
12 Which scientific instrument helps measure temperature? A Balance B Thermometer C Plumb line D Pulley
13 Which force keeps us on the ground? A Magnetic force B Muscular force C Gravitational force D Friction
14 Which force is used when we push or pull an object by hand? A Muscular force B Magnetic force C Gravitational force D Electrical force
15 Which force pulls objects toward the Earth? A Magnetic force B Muscular force C Friction D Gravitational force
19 Which are uses of simple machines? A Lifting loads B Changing direction of force C Increasing effort D Making work easier