Arbeitsblatt

Siemens Stiftung

Assignments relating to efficiency

Worksheet:
Questions and calculation tasks on the subject of efficiency.


In science and technology, the efficiency of a process or a machine is of enormous importance. It is therefore vital to understand efficiency and to be able to calculate it.

Information and ideas:
Well suited for further study of the topic of "efficiency" and for practicing simple physics calculations.
In addition, students can further research the efficiencies of heat engines, power plants, and other energy sources and compile the results as a table of values.
The answers to the assignments can be found on the answer sheet of the same name on the media portal of the Siemens Stiftung.

Übung

Siemens Stiftung

Energy converter

Matching exercise:
What energy forms can be converted into each other?


The energy converter (center) is displayed at random. The associated source energy (left) and useful energy (right) can be selected with a mouse click. If the matches are correct, a success message is displayed.
This exercise provides an entertaining way to promote understanding of energy converters. It also includes a test function with no limit on the number of attempts. The correct answer can be displayed at any time.

Medientypen

Übung

Lernalter

11-18

Schlüsselwörter

Energy Energy supply Physics

Sprachen

Englisch

Anderer Ressourcentyp

Siemens Stiftung

Heat 3: Heated water is mixed with water at room temperature (student instructions)

Experimentation instructions for students in grades 5, 6, and 7:
Detailed instructions and questions for students on conducting the third subexperiment on heat.

The students will learn the principle of heat transfer by mixing heated water with cooler water, measuring the temperature, and recording their results in a table.

The instructions first include a photo and a list of the required apparatus and materials. Text and pictures explain the preparations for the experiment step by step. Then several assignments are presented: The students should express their guesses, conduct the experiment, and note down their observations.

Information and ideas:
· Observe the safety information in these instructions as well as in the teacher information related to the experiment and discuss them with your students.
· Also observe the applicable safety guidelines for your school.

Anderer Ressourcentyp

Siemens Stiftung

Energy utilization chains

Information module:
How are primary energies that occur in nature converted so we can use them in our daily lives?


The energy stored in primary energy sources cannot be used directly for most applications, which is why it needs to be converted into other forms of energy. The term "energy utilization chain" describes the entire conversion process. This information module can be used to interactively visualize possible energy utilization chains. "Building heating" will be used as an example to show that losses occur during each conversion stage. This module provides detailed information for the individual conversion stages for a fuel cell.

Information and ideas:
Does energy always have to be generated across several stages? Students can research examples of opportunities for direct use and think about whether "lost" energy could be better utilized.

Experiment

Siemens Stiftung

Determining the efficiency of a hand-held mixer (teacher information)

Teacher information:
Teaching methods for teachers on the experiments of the experimentation instructions of the same name.

This teaching method provides all information that teachers need to prepare and conduct the experiments. It lists all materials. In addition, it gives safety information and tips for conducting the experiments.

Information and ideas:
Observe the safety information in the instructions as well as the applicable safety guidelines for your school.

Text

Siemens Stiftung

Tracking down "energy hogs? (teacher information)

Teaching methods:
Teaching methods for teachers on the experiments of the experimentation instructions of the same name

These teaching methods provide all the information that teachers need to prepare and conduct the experiments. They list all materials. In addition, they provide safety information and tips for conducting the experiments.

Information and ideas:
Observe the safety information in the instructions as well as the applicable safety guidelines for your school.


Dieses Material ist Teil einer Sammlung

Anderer Ressourcentyp

Siemens Stiftung

Heat 1: Water stores heat 1 (student instructions)

Experimentation instructions for students in grades 5, 6, and 7:
Detailed instructions and questions for students on conducting the first subexperiment on heat.

The students will heat water. They will measure the temperature and record their results in a table and a time/temperature graph.

The instructions first include a photo and a list of the required apparatus and materials. Text and pictures explain the preparations for the experiment step by step. Then several assignments are presented: The students should express their guesses, conduct the experiment, and note down their observations.

Information and ideas:
· Observe the safety information in these instructions as well as in the teacher information related to the experiment and discuss them with your students.
· Also observe the applicable safety guidelines for your school.

Anderer Ressourcentyp

Siemens Stiftung

Guideline for the "Energy conversion" interactive whiteboard content

Guideline:
This document provides an overview of a possible scenario for using the content package for interactive whiteboards entitled "Energy conversion".


This guideline is intended for teachers. It presents all media of the content package and puts them in a meaningful didactic context using examples.

Anderer Ressourcentyp

Siemens Stiftung

Heat 2: Water stores heat 2 (student instructions)

Experimentation instructions for students in grades 5, 6, and 7:
Detailed instructions and questions for students on conducting the second subexperiment on heat.

The students will heat water and allow it to cool again. They will measure the temperature and record their results in a table and a time/temperature graph.

The instructions first include a photo and a list of the required apparatus and materials. Text and pictures explain the preparations for the experiment step by step. Then several assignments are presented: The students should express their guesses, conduct the experiment, and note down their observations.

Information and ideas:
· Observe the safety information in these instructions as well as in the teacher information related to the experiment and discuss them with your students.
· Also observe the applicable safety guidelines for your school.

Anderer Ressourcentyp

Siemens Stiftung

Energy conversion (link list)

Link list:
Many interesting links on the topic of "Energy conversion."


Information and ideas:
Suitable as a source for Internet research for teachers and students alike.