Term 1 Revision Assessment

Which of the following is the example for kinetic energy?

• A boy is sleeping

• A fan is off

• A car is moving

• A girl watching television

........................ is a simple machine that uses grooved wheels and a rope to raise, lower or move a load?

• Lever

• Inclined plane

• wheel and axle

• pulley

Friction can be useful when driving a car. How can friction be reduced in a car?

• Use the rear view mirror when turning

• Check the headlights once a week

• Keep the engine topped up with oil

• Don't let the diesel/petrol fall too low in the tank

The diagram given below depicts which of the processes of the change of state of matter?

• Sublimation

• Evaporation

• Vaporization

• Condensation  

When a substance is cooled, the movement of its particles.

• slows down

• increases

• does not change

• doubles

The decrease in the size of matter on cooling is called

• contraction

• expansion

• evaporation

• melting

The shadow of an object does not show ...........

• the shape of the object

• the outline of the object

• the colour of the object

• none of these

.................... objects do not form shadows.

• translucent

• transparent

• opaque

• all of these

The materials through which some amount of light can pass are called:

• Opaque materials

• Translucent materials

• Transparent materials

• Luminous materials

Why do we sprinkle powder before playing caroms?

• to increase friction

• to decrease friction

• to increase and decrease the friction depending on the type of the game played

• none of these