Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Browse exam papers

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

Describe an experiment comparing thermal conductivity of metals

Describe an experiment comparing thermal conductivity of metals.

Answers

Experiment: Comparing thermal conductivity of metals.

Procedure:
1. Obtain four identical rods of copper, iron, aluminium and brass.
2. At one end of each rod attach a matchstick using paraffin wax and let it solidify.
3. Place the rods on a tripod stand with the free ends close to one another as shown.
4. Heat the free ends strongly with a Bunsen burner.
5. Observe what happens.

Discussion:
When done correctly and carefully the matchsticks will fall off in the following order: copper, aluminium, brass and finally iron. This shows that different metals conduct heat at different rates.

raphael answered the question on October 11, 2018 at 05:06

Answer Attachments

Next: Describe the unusual expansion of water, with aid of diagrams

Previous: Describe experiments to show convention in gases; model chimney (smoke box) and revolving paper-vane experiments

View more Physics Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

Describe the unusual expansion of water, with aid of diagrams (Solved)

Describe the unusual expansion of water, with aid of diagrams.

Date posted: October 11, 2018 . Answers (1)
Describe with aid of diagrams 5 types of thermometers (Solved)

Describe with aid of diagrams 5 types of thermometers

Date posted: October 11, 2018 . Answers (1)
Describe an experiment to show expansion of gases (Solved)

Describe an experiment to show expansion of gases

Date posted: October 11, 2018 . Answers (1)
Describe the applications of the expansion of solids (Solved)

Describe the applications of the expansion of solids.

Date posted: October 9, 2018 . Answers (1)
Describe the experiment to investigate actual expansion of solids, using a bimetallic strip (Solved)

Describe the experiment to investigate actual expansion of solids, using a bimetallic strip.

Date posted: October 9, 2018 . Answers (1)
Describe the bar-breaker experiment (Solved)

Describe the bar-breaker experiment.

Date posted: October 9, 2018 . Answers (1)
Describe the ball and ring experiment (Solved)

Describe the ball and ring experiment.

Date posted: October 9, 2018 . Answers (1)
Outline ways in which matter can be changed (Solved)

Outline ways in which matter can be changed.

Date posted: October 9, 2018 . Answers (1)
Application of pressure in gases and liquids (Solved)

Application of pressure in gases and liquids.

Date posted: October 9, 2018 . Answers (1)
With the aid of diagrams, describe four devices used in measuring pressure (Solved)

With the aid of diagrams, describe four devices used in measuring pressure

Date posted: October 9, 2018 . Answers (1)
A man blows into one end of a U-tube containing water until the levels differ by 40.0 cm. if the atmospheric pressure is 1.01 ×... (Solved)

A man blows into one end of a U-tube containing water until the levels differ by 40.0 cm. if the atmospheric pressure is 1.01 × 105 N/m² and the density of water is 1000 kg/m³, calculate his lung pressure.

Date posted: October 9, 2018 . Answers (1)
The height of the mercury column in a barometer is found to be 67.0 cm at a certain place. What would be the height of... (Solved)

The height of the mercury column in a barometer is found to be 67.0 cm at a certain place. What would be the height of a water barometer at the same place? (Densities of mercury and water are 1.36 × 104 kg/m³ and 1.0 × 103 kg/m³ respectively.)

Date posted: October 9, 2018 . Answers (1)
A diver is 10 m below the surface of water in a dam. If the density of water is 1,000 kgm^-3, determine the pressure due... (Solved)

A diver is 10 m below the surface of water in a dam. If the density of water is 1,000 kgm^-3, determine the pressure due to the water on the diver. (Take g = 10 Nkg )

Date posted: October 9, 2018 . Answers (1)
A rectangular brick of weight 10 N, measures 50 cm × 30 cm × 10 cm. calculate the values of the maximum and minimum pressures... (Solved)

A rectangular brick of weight 10 N, measures 50 cm × 30 cm × 10 cm. calculate the values of the maximum and minimum pressures which the block exert when resting on a horizontal table.

Date posted: October 9, 2018 . Answers (1)
The length of a spring is 16.0 cm. its length becomes 20.0 cm when supporting a weight of 5.0 N. calculate the length of the... (Solved)

The length of a spring is 16.0 cm. its length becomes 20.0 cm when supporting a weight of 5.0 N. calculate the length of the spring when supporting a weight of: (a) 2.5 N (b) 6.0 N (c) 200 N

Date posted: October 9, 2018 . Answers (1)
Outline the types of forces (Solved)

Outline the types of forces

Date posted: October 9, 2018 . Answers (1)
State three properties of gamma rays which differ from that of alpha and beta particles (Solved)

State three properties of gamma rays which differ from that of alpha and beta particles.

Date posted: September 20, 2018 . Answers (1)
The speed of sound in air is 340 m/s.A loudspeaker placed between two walls X and Y, but nearer to wall x than wall y,... (Solved)

The speed of sound in air is 340 m/s.A loudspeaker placed between two walls X and Y, but nearer to wall x than wall y, is sending out constant sound pulses.How far is the speaker from wall Y if it is 200 m from wall X and the time between the two echoes received is 0.176 s.

Date posted: September 17, 2018 . Answers (1)
The ship sends out an ultrasound whose echo is received after 10s. If the wavelength of the ultrasound in water is 0.05 m and the... (Solved)

The ship sends out an ultrasound whose echo is received after 10s. If the wavelength of the ultrasound in water is 0.05m and the frequency of the transmitter is 50kHz, calculate the depth of the ocean

Date posted: September 17, 2018 . Answers (1)
A cog wheel rotating uniformly produces sound of wavelength 1.65 m. If it makes 10 revolutions/second, find the number of teeth on the wheel, given... (Solved)

A cog wheel rotating uniformly produces sound of wavelength 1.65 m. If it makes 10 revolutions/second, find the number of teeth on the wheel, given that the velocity of sound in air is 330 m/s.

Date posted: September 17, 2018 . Answers (1)