# 2.4 Om vorms van energie te beskryf

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## Memorandum

a) Elektriese energie/klankenergie/ligenergie.

b) Kinetiese energie/potensiële energie.

c) Ligenergie.

d) Elektriese energie/ligenergie/warmte-energie.

e) Kinetiese energie/warmte-energie.

f) Chemiese energie/warmte-energie/ligenergie.

## Aktiwiteit: om vorms van energie te beskryf [lu 2.3]

Benoem die volgende sketse deur die energievorm wat voorgestel word, in te vul.

(a)

Televisie

(b)

Kisduiweltjie (“Jack-in-the-box”)

(c)

Lighuis

(d)

Weerlig

(e)

Bewegende motor

(f)

Brandende vuur

(a) __________________________________________________________________

(b) _________________________________________________________________

(c) _________________________________________________________________

(d) _________________________________________________________________

(e) __________________________________________________________________

(f) __________________________________________________________________

5. Die oordrag van energie

(a) Geleiding

Geleiding vind plaas wanneer warmte deur vaste stowwe beweeg. Hou ‘n stuk draad in ‘n vlam. Wat gebeur na ‘n rukkie?

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Die hitte is deur middel van geleiding in die draad na jou hand oorgedra. Metale soos koper, yster en aluminium is beter geleiers as nie-metale soos hout, water en kurk. Sekere metale gelei hitte vinniger as ander.

Plak of teken sulke materiale hier.

## Assessering

Leeruitkomste 2: Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Assesseringstandaard 2.3: Dit is duidelik wanneer die leerder inligting interpreteer, bv.: interpreteer inligting deur kernidees in die teks te identifiseer, patrone in aangetekende data te vind en gevolgtrekkings te maak uit inligting in verskeie vorme (bv. prente, diagramme en geskrewe teks).

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