Theory

CH5 - THERMAL EFFECTS

(a) A metal ruler with a rectangular cross-section is heated in an oven.(i) State two things that happen to the atoms of the metal.1. ...................

2012 Winter

1

Theory

CH5 - THERMAL EFFECTS

The main parts of a cold store are shown in Fig. 4.1. (a) Explain why the cooling tubes are positioned at the top of the store. [1](b) Suggest why the...

2011 Summer

2

Theory

CH5 - THERMAL EFFECTS

Fig. 5.1 shows a typical laboratory thermometer.(a) Explain why the thermometer has(i) thin walls on its bulb,...........................................

2009 Summer

2

Theory

CH5 - THERMAL EFFECTS

The liquid-in-glass thermometer in Fig. 6.1 has a scale from -10°C to 110°C.(a) Two of the temperatures marked on the thermometer are known as fixed...

2012 Summer

3

Theory

CH5 - THERMAL EFFECTS

(a) In terms of molecules, explain why solids expand when they are heated................................................................................

2012 Summer

3

Theory

CH5 - THERMAL EFFECTS

In Fig. 4.1, the smoke cell consists of an illuminated glass box into which some smoke has been injected.(a) Describe briefly what is seen when the co...

2011 Winter

2

Theory

CH5 - THERMAL EFFECTS

(a) Fig. 5.1 shows the cooling curve for a pure substance. The substance is liquid at A.(i) Describe what is happening to the substance between1. A an...

2009 Winter

2

Theory

CH5 - THERMAL EFFECTS

(a) A crystal that dissolves slowly is put into some water in a beaker, as shown in Fig. 6.1.Fig. 6.1As it dissolves, the crystal colours the water ar...

2012 Winter

2

Theory

CH5 - THERMAL EFFECTS

Energy may be transferred from one place to another by means of conduction, convection or radiation. Which process is involved when energy is transfer...

2011 Summer

2

Theory

CH5 - THERMAL EFFECTS

Solar panels are fitted to the roof of a house. Describe briefly what they do.

2011 Summer

2

MCQ

CH1 - MEASUREMENTS AND UNITS

The diagram shows part of a ruler. The ruler is used to find the length of a nail.What is the length of the nail?

2014 Summer

3

MCQ

CH2 - FORCES AND MOTION

Which distance/time graph represents the motion of an object moving at constant speed?

2014 Summer

2

MCQ

CH2 - FORCES AND MOTION

A car takes 15 minutes to travel along a road that is 20 km long.What is the average speed of the car?

2014 Summer

3

MCQ

CH2 - FORCES AND MOTION

A customer goes to a market and buys some rice. The stallholder pours rice into a dish that hangs from a spring balance. He records the reading on the...

2014 Summer

2

MCQ

CH1 - MEASUREMENTS AND UNITS

The table gives the volumes and masses of four objects. Which object has the greatest density?[Table_1]

2014 Summer

2

MCQ

CH3 - FORCES AND PRESSURE

A wooden bar is pivoted at its centre so that it can rotate freely. Two equal forces $F$ are applied to the bar. In which diagram is the turning effec...

2014 Summer

2

MCQ

CH3 - FORCES AND PRESSURE

A student adds weights to an elastic cord. He measures the length of the cord for each weight. He then plots a graph from the results, as shown. What ...

2014 Summer

2

MCQ

CH4 - FORCES AND ENERGY

In a hydroelectric power station, one form of energy is stored in a lake or reservoir. This energy is then transferred in stages to another useful for...

2014 Summer

2

MCQ

CH4 - FORCES AND ENERGY

A certain machine is very efficient. What does this mean?

2014 Summer

2

MCQ

CH3 - FORCES AND PRESSURE

The diagram shows a simple mercury barometer.Atmospheric pressure decreases. What happens to the level of the mercury at P and what happens to the lev...

2014 Summer

3