VÄRMEÖVERFÖRING
Para ihop de svarsalternativ som hör ihop.
Värmen rör sig genom ett material
Värme transporteras från ett ställe till ett annat med hjälp av rörelsen i en vätska eller en gas
TEMPERATUR OCH VÄRME
Temperatur och värme är samma sak
Ja, för när temperaturen är +20 grader Celsiu så är det varmt
Nej, för temperatur är ett mått på värme
Vatten kan bli varmare än +100 grader Celsius
Nej, för när vattnet blir +100 grader Celsius så övergår den i gasform och blir till vattenånga
Ja, om man fortsätter att koka den länge
Para ihop de svarsalternativ som hör ihop.
VAD ÄR VÄRME
Varför blir materia varmt?
När molekylerna sitter tätt ihop blir det varmt, precis som det blir varmt när många människor står tätt ihoppackade.
Värme handlar om partiklarnas rörelse, ju mer de rör sig desto varmare blir det.
Vid den absoluta nollpunkten är temperaturen
grader Celsius.
Värme och meteoroligi
Vilka påståenden är sanna?
Läran om vädret kallas meteorologi
Lågtryck bildas när varm luft stiger uppåt
Högtryck bildas när varm luft stiger uppåt
Vindar bildas när varm luft stiger uppåt
Front kallas gränsen mellan varm och kall luftmassa
Växthuseffekten är bara dålig, vi skulle ha det bättre utan den.
Växthuseffekten beror på att mer värmestrålning kommer in genom atmosfären än vad som släpps ut
Partikelmodellen
Para ihop de svarsalternativ som hör ihop
Används för att förklara saker som vi inte vet tillräckligt mycket om
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