Simulation

Siemens Stiftung

Proportion of water in various organisms

Animation:
Water is the original building block of all life on Earth. This is also shown by the relatively high water content in humans, animals and plants.

People are about 70% water - babies even 75%. Water is in every body cell, it forms the basis for our blood, for every type of tissue cell and for the entire human brain.

Information and ideas:
Students can first guess how much water there is in humans, animals and plants.
This interactive graphic can be the starting point for working on the topics "role of water in the body" and "water intake and loss in people".

Simulation

Siemens Stiftung

Sound propagation velocity in different materials

Simulation:
Sound velocity dependent on different materials.

The speed of sound is the speed at which sound waves propagate in a medium like air or water.
It is measured in m/s.

Information and ideas:
Various experiments on the speed of sound can be done with the students in Physics lessons.

Relevant for teaching:
Sound/acoustics: parameters
Vibrations and waves
Measuring of sound

Medientypen

Simulation

Lernalter

11-18

Schlüsselwörter

Sound Wave (physics)

Sprachen

Englisch

Dieses Material ist Teil einer Sammlung

Simulation

Siemens Stiftung

Distribution of world precipitation

Information module, with charts:
Annual precipitation in selected cities in various climatic zones, data on precipitation and temperatures.

The total annual precipitation of the individual cities can be compared with each other. The precipitation and temperature curves indicate the climates. The precipitation and temperature data are from 1961-1990.

Information and ideas:
Students learn how to read climate diagrams and should be able to assign the individual locations to the various climates.
From the diagrams, students can draw conclusions on the role of water in agriculture in the various regions.

Simulation

Siemens Stiftung

Sound transduction physiological vs. electronic

Animation:
Shows that ear and microphone function in a similar way.

Sound transduction in the ear is based on the same principle as in a microphone: It codes the information.
In the ear the sound waves are converted into electrical impulses in the brain.
In a microphone the signal is also converted into electric currents.

Information and ideas:
The animation makes it clear that technical devices are often based on natural "models". Students can be asked to think of other examples of technology imitating nature.

Relevant for teaching:
Vibrations and waves
Structure and functions of a sensory organ
Reception of stimuli and transmission of information
Functions of senses

Medientypen

Simulation

Lernalter

11-18

Schlüsselwörter

Electroacoustics Sound

Sprachen

Englisch

Dieses Material ist Teil einer Sammlung

Simulation

Siemens Stiftung

Construct eardrum - experiment

Animation:
Experiment where the students can understand how the eardrum transmits sound waves.

Simple experiment which demonstrates how the eardrum works.
Experiment setup:
Thin paper or foil is fastened over the end of a cardboard tube. Grains of sand are put on the paper.
If something is said into the open end of the tube, it can be observed how the grains of sand move.

Information and ideas:
To prepare or back up the subject. An experiment that can be done easily in the classroom.

Variation of the experiment:
Fit sort of membrane at the top and bottom of the tube. Tighten membrane with rubber bands. Put grains of salt at the top end and then strike the foil at the bottom end.
It can be observed that the grains of salt move (= the pressure was conveyed through the air!).

Relevant for teaching:
The human body
Structure and function of a sensory organ
Acoustic phenomena

Medientypen

Simulation

Lernalter

6-15

Schlüsselwörter

Sound

Sprachen

Englisch

Dieses Material ist Teil einer Sammlung