Care of the boys


The care of the boys the females and little men can divide. However, can have young also completely from the little man are supplied that mostly applies when the female must look after the construction the other nest.
Food
Worms, molluscs, insects, and fruits eat food the redbreasts. If they insects go hunting they sit on a branch up to six metres about the ground if it discovers then his prey on the ground, it immediately catches the prey and consumed then on a branch what it sits down on. They hunt her prey also on the ground, while they move hopping and turn the recumbent sheets on the ground. Their food exists in winter of seed and berries and at the hatching time from worms. But supposedly were also observed to red cups with how they have caught successfully fish.


District behaviour


To defend district behaviour around the district a district defence song is begun singing. But if this is not sufficient, a very aggressive behaviour originates towards intruders, because then the red cups lift the tail, spread out her wings and fluff up themselves on. But the redbreast is mostly very tolerant if the intruders look only for food.




Song


the red cups begin with singing ordinarily one hour before the sunrise and one hour before the sundown then they stop. The little men mostly sing between March and May. Under this link you can sound the song of a redbreast.
Link: http://www.limmatau.ch/siteVogeluhr.htm



Age


most redbreasts will be 1 year old just, but if they have well got over the first year, can become from three to four years old most up to.

Wärmekapazität von Wasser

Durch einen Versuch wollten wir die Wärmekapazität von Wasser herausfinden.


Anfang: Wir maßen das Gewicht des Gasbrenners.
343,64g


Dann erhitzten wir mit diesem Gasbrenner 400ml Wasser und maßen pro Minute die Temperatur ( Anfangstemeratur: 22°C).



















nach 1 min 35°C


2 min 44°C


3 min 52°C


4 min 60,6°C

5 min 71°C


6 min 78°C


7 min 86°C

8 min 89°C


Das Wasser wurde um 67°C erhöt.


Ab der 9. Minute machten wir den Brenner aus. Die Temperatur blieb kurz gleich, dann sank sie wieder.



Nach der Messung maßen wir das Gewicht des Gasbrenners erneut.
336,30g

Es wurden also 7,34g verbraucht.


Dann errechneten wir die Wärmekapazität des Wassers durch die freigesetzte Wärmeernergie (0.36J), der Masse(400g) und der Temeraturdifferenz in K( 67°C).


Rechnung: 360J/0,4kg∙ 67K = 13,43 J/Kg∙K


Nach der Literatur beträgt die Wärmekapazität von Wasser 4,183 J/Kg∙ K



Nach dem wir überlegt hatten an was es liegen könnte dass unsere Werte so unterschiedlich zum Literaturwert sind, sind wir zu folgenden Schlüssen gekommen:

• besser isolieren


• von innen heizen