Thermal Properties And Temperature
Muhtasari
Bridges are built with gaps so they do not buckle in summer, kettles stay at 100 degrees while they boil, and a wet finger feels cold in a breeze. All three are thermal physics in action: expansion, change of state, and the cooling caused by evaporation.
In this lesson you will explain thermal expansion of solids, liquids and gases, describe melting, boiling, condensation and evaporation in terms of particles and energy, and calculate energy changes using specific heat capacity. You will also see why evaporation cools and how to speed it up.
Malengo
- [Core] Describe, qualitatively, the thermal expansion of solids, liquids and gases at constant pressure
- [Core] Describe evaporation in terms of the escape of the more energetic particles from the surface of a liquid
- [Core] Know that evaporation causes cooling of a liquid
- [Supplement] Explain some of the everyday applications and consequences of thermal expansion
- [Supplement] Describe how temperature, surface area and air movement over a surface affect evaporation
Maelezo ya Somo
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Tathmini ya Somo
Hongera kwa kukamilisha somo la Thermal Properties And Temperature. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- For the same temperature rise, the greatest expansion is shown by: A. solids B. liquids C. gases D. all expand equally Answer: C
- During boiling, the energy supplied is used to: A. raise the temperature B. break the bonds between particles C. increase the pressure D. cool the liquid Answer: B
- Evaporation cools a liquid because: A. the slowest particles escape B. the most energetic particles escape, lowering the average energy C. the liquid gains energy D. the temperature rises Answer: B
- How much energy raises 2 kg of water by 10 C? (c = 4200 J/(kg C)) A. 8400 J B. 21 000 J C. 84 000 J D. 4200 J Answer: C
- Water boils at standard atmospheric pressure at: A. 0 C B. 50 C C. 100 C D. 273 C Answer: C
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Thermal Properties And Temperature? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
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