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Natuurwetenskappe

Energie-oordrag en kragte

Opvoeders afdeling

Memorandum

1. Kilojoule.

2. Word bepaal deur jou massa, ouderdom en energieverbruik.

3. So ‘n persoon sal nie genoeg energie hê om te presteer nie aangesien hy nie geëet het nie.

Leerder afdeling

Inhoud

Aktiwiteit: om inligting oor voedingswaarde in voedselsoorte te versamel [lu 1.2]

Versamel ‘n paar omhulsels of verpakkings van voedselsoorte. Bestudeer die gegewens daarop aangedui:

1. In watter eenheid word energie gemeet? _________________________________

2. Hoeveel van hierdie eenhede behoort jy daagliks in te neem? _________________

3. Probeer nou verduidelik waarom ‘n persoon wat op ‘n eetstaking is, nie gekies moet word om aan die marathon deel te neem nie.

_____________________________________________________________________

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_____________________________________________________________________

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2. waar kom energie vandaan?

Ons kry omtrent al ons energie indirek van die son af. Die son straal hitte en lig uit en het nog genoeg kernkrag oor om vir die volgende 5 000 miljoen jaar te skyn.

Net soos die mens kos as bron van energie gebruik, gebruik ‘n bus of ‘n trein brandstof om passasiers van een plek na ‘n ander te vervoer.

Brandstof is ‘n stof waarin energie opgesluit lê.

Assessering

Leeruitkomste 1: Die leerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

Assesseringstandaard 1.2: Dit is duidelik wanneer die leerder ondersoeke uitvoer en data versamel: organiseer en gebruik toerusting of bronne om inligting in te versamel en aan te teken.

Questions & Answers

calculate molarity of NaOH solution when 25.0ml of NaOH titrated with 27.2ml of 0.2m H2SO4
Gasin Reply
what's Thermochemistry
rhoda Reply
the study of the heat energy which is associated with chemical reactions
Kaddija
How was CH4 and o2 was able to produce (Co2)and (H2o
Edafe Reply
explain please
Victory
First twenty elements with their valences
Martine Reply
what is chemistry
asue Reply
what is atom
asue
what is the best way to define periodic table for jamb
Damilola Reply
what is the change of matter from one state to another
Elijah Reply
what is isolation of organic compounds
IKyernum Reply
what is atomic radius
ThankGod Reply
Read Chapter 6, section 5
Dr
Read Chapter 6, section 5
Kareem
Atomic radius is the radius of the atom and is also called the orbital radius
Kareem
atomic radius is the distance between the nucleus of an atom and its valence shell
Amos
Read Chapter 6, section 5
paulino
Bohr's model of the theory atom
Ayom Reply
is there a question?
Dr
when a gas is compressed why it becomes hot?
ATOMIC
It has no oxygen then
Goldyei
read the chapter on thermochemistry...the sections on "PV" work and the First Law of Thermodynamics should help..
Dr
Which element react with water
Mukthar Reply
Mgo
Ibeh
an increase in the pressure of a gas results in the decrease of its
Valentina Reply
definition of the periodic table
Cosmos Reply
What is the lkenes
Da Reply
what were atoms composed of?
Moses Reply
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Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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