car battery tester What happens when you wrap a ba

What are the results once you wrap battery power tester in aluminum foil?

Lesson Designed by: David Duncan

Sunshine State Standard Assessed: SC.B.1.4.1 – Understands how knowledge of energy is fundamental to every one the scientific disciplines. SC.B.1.4.7 – Understands that the total amount of usable energy always decreases, however the total magnitude of energy is conserved in any transfer. SC.B.2.4.1 – Knows that the structure from the universe certainly is the consequence of interactions involving fundamental particles (matter) and basic forces (energy) and also that evidence points too the universe contains all of the matter and that ever existed.

Lessons Learned – What proved helpful:
Students were keep in mind the energy with the battery tester was being changed to heat energy, thinking that eventually it tester would use up all your energy entirely. Furthermore they found multiple alternatives construct y could test to alter the experiment.

Lessons Learned – Challenges:
To arrive at the understanding, generally students needed individual period to be aware of the concepts where you work.

Materials:
* D battery tester
* Aluminum foil, just right to wrap battery tester.

Experiment:
Hand each group an alkaline D battery tester and a joint of aluminum foil big enough to wrap it in. Have them wrap battery tester and observe it (Look, Listen, Touch, Smell) to find out what are the results. This will take at most 10-20 minutes, and students should unwrap battery tester within A quarter-hour.

So what happened and why: Battery tester should get warmer whilst they may not being no strain on the battery tester. Because energy creation of it tester is actually trivially used, and can’t be returned on the battery tester as rapidly as it would be produced, it is changed to heat,

car battery tester

, which the students can notice by touching it tester.

More in depth why: The particular reason why the battery tester warms a consequence of internal resistance – the resistance battery tester itself carries a strong electric current. Alkaline batteries have a superior internal resistance, therefore take advantage of a large quanity with small resistance (like our aluminum foil) then the vast majority of energy within the battery tester can be expended on the battery tester itself rather than with the circuit attached. This feature also makes alkaline batteries improper for items like saws, while the circuit (the tool) is of lower resistance in comparison to the battery tester itself.

Possible questions/comments:
1. How it happened towards battery tester?
2. Why did the battery tester get warm?
3. (Discussion) What variables could we difference in this activity?

Instances of discussion:
a) Style of battery tester
b) Scale of battery tester
c) Kind of foil
d) Number of foil

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