Theory

CH4 - FORCES AND ENERGY

Electricity can be obtained from different energy resources.Which energy resource is used to obtain electricity without producing heat to boil water?A...

2009 Summer

Theory

CH4 - FORCES AND ENERGY

Four people of equal weight on a beach use different routes to get to the top of a sea wall. Which person produces the greatest average power?[Table_1...

2009 Summer

Theory

CH4 - FORCES AND ENERGY

A wind turbine has blades, which sweep out an area of diameter 25 m.(a) The wind is blowing directly towards the wind turbine at a speed of 12 m/s. At...

2009 Summer

Theory

CH4 - FORCES AND ENERGY

The diagram shows a microphone being used in an interview.Which energy change takes place in the microphone?[Table_1] | | input energy | output ene...

2009 Winter

Theory

CH4 - FORCES AND ENERGY

The table shows the times taken for four children to run up a set of stairs. Which child's power is greatest?[Table_1: mass of child / kg and time / s...

2009 Winter

Theory

CH4 - FORCES AND ENERGY

The table shows the times taken for four children to run up a set of stairs.Which child’s power is greatest?[Table_1]| | mass of child / kg | time /...

2009 Winter

Theory

CH4 - FORCES AND ENERGY

The diagram shows a microphone being used in an interview. Which energy change takes place in the microphone?input energyoutput energyA chemicalelectr...

2009 Winter

Theory

CH4 - FORCES AND ENERGY

A farmer uses an electric pump to raise water from a river in order to fill the irrigation channels that keep the soil in his fields moist.Every minut...

2009 Winter

Theory

CH4 - FORCES AND ENERGY

A farmer uses an electric pump to raise water from a river in order to fill the irrigation channels that keep the soil in his fields moist. Every m...

2009 Winter

Theory

CH4 - FORCES AND ENERGY

Energy is stored in a battery and in a box of matches. Which type of energy is stored in each of them?[Table_1]| | a battery | a box of matches ...

2010 Summer

Theory

CH1 - MEASUREMENTS AND UNITS

The diagram shows an enlarged drawing of the end of a metre rule. It is being used to measure the length of a small feather. What is the length of the...

2011 Summer

Theory

CH2 - FORCES AND MOTION

An object moves initially with constant speed and then with constant acceleration. Which graph shows this motion?

2011 Summer

Theory

CH6 - WAVES AND SOUNDS

A tennis player hits a ball hard and 0.40 s later hears the echo from a wall. The speed of sound in air is 330 m/s.How far away is the player from the...

2011 Summer

Theory

CH2 - FORCES AND MOTION

Which statement about mass and weight is correct?A. Mass and weight are both forces.B. Neither mass nor weight is a force.C. Only mass is a force.D. O...

2011 Summer

Theory

CH3 - FORCES AND PRESSURE

The diagram shows a balance being used to find the weight of a baby. The weight of the basket can be ignored.At equilibrium, the pivot is nearer to th...

2011 Summer

Theory

CH1 - MEASUREMENTS AND UNITS

A cube of side 2.0 cm is placed on a balance. What is the density of the cube? A. 0.90 g/cm³ B. 1.2 g/cm³ C. 1.8 g/cm³ D. 3.6 g/cm³

2011 Summer

Theory

CH3 - FORCES AND PRESSURE

Objects with different masses are hung on a spring. The diagram shows how much the spring stretches.The extension of the spring is directly proportion...

2011 Summer

Theory

CH4 - FORCES AND ENERGY

Which row gives an example of the stated form of energy?[Table_1]form of energy | exampleA gravitational | the energy due to the movement of a train a...

2011 Summer

Theory

CH4 - FORCES AND ENERGY

Which energy resource is used to generate electricity by first boiling water? A. hydroelectric B. nuclear fission C. tides D. waves

2011 Summer

Theory

CH4 - FORCES AND ENERGY

Two farmers use an electrically powered elevator to lift bales of hay. All the bales of hay have the same mass. As sunset approaches, they increase...

2011 Summer