Test
Temperature & Heat
Preguntas del test (19)
1What direction does heat flow spontaneously (happening apparently)?
- Acold → hot
- Bhot → cold
2What is temperature compared to thermal energy (difference)?
- ATemperature: overall or random amount of energy/heat (°F, °C, °K) , Thermal Energy: directly measured (Joules)
- BTemperature: directly measured (°F, °C, °K) , Thermal Energy: overall or random amount of energy/heat (Joules)
- CTemperature: directly measured (Joules) , Thermal Energy: overall or random amount of energy/heat (°F, °C, °K)
- DTemperature: overall or random amount of energy/heat (Joules) , Thermal Energy: directly measured (°F, °C, °K)
3Is work 100% efficient?
- AYes; it is ALWAYS lost
- BYes; it is NEVER lost
- CNo; friction gets ALL of the energy lost
- DNo; friction gets SOME of the energy lost
4What is conduction?
- AEnergy transferred by 2 things TOUCHING
- BEnergy transferred through the movement of liquid or through CURRENTS
- CEnergy transferred from an energy source and DOESN'T have to travel through MATTER
5What is radiation?
- AEnergy transferred by 2 things TOUCHING
- BEnergy transferred through the movement of liquid or through CURRENTS
- CEnergy transferred from an energy source and DOESN'T have to travel through MATTER
6What is convection?
- AEnergy transferred from an energy source and DOESN'T have to travel through MATTER
- BEnergy transferred through the movement of liquid or through CURRENTS
- CEnergy transferred by 2 things TOUCHING
7What is thermodynamics?
- AThe study of heat and thermal energy
- BThe study of conversions between heat and other forms of energy
- CThe study of particle movement
8What is the 1st law of thermodynamics?
- AWe can never reach absolute zero
- BEnergy con never be created or destroyed and therefore must be conserved
- CEnergy flows from hot → cold (to go from cold → hot, you must do work)
9What is the 2nd law of thermodynamics?
- AEnergy flows from hot → cold (to go from cold → hot, you must do work)
- BEnergy con never be created or destroyed and therefore must be conserved
- CWe can never reach absolute zero
10What is the 3rd law of thermodynamics?
- AEnergy flows from hot → cold (to go from cold → hot, you must do work)
- BWe can never reach absolute zero
- CEnergy con never be created or destroyed and therefore must be conserved
11What does thermal energy depend on? (more than one answer)
- Atemperature
- Bvolume
- Cdensity
- Dphase
- Emass
12Most substances _____ when they freeze and _____ when heated. However, water _____ when it freezes _____ when it is heated.
- Acontrast; expand; expand; contrast
- Bcontrast; expand; contrast; expand
- Ccontrast; contrast; expand; expand
- Dexpand; expand; contrast; contrast
13What is specific heat?
- AWhen 2 different objects reaching the same temperature
- BAmount of heat needed to raise 1 gm of material 1°C
- CAmount of energy an object can sustain
- DChange in temperature
14What is water's specific heat?
- A3.98 J/g°C ≈ 4 J/g°C
- B4 J/g°C (exactly)
- C2.98 J/g°C ≈ 3 J/g°C
- D1.98 J/g°C ≈ 2 J/g°C
15Is water's specific heat high or low compared to other materials?
- Ahigh; temperature raises less when energy is added
- Blow; temperature raises less when energy is added
- Chigh; temperature raises more when energy is added
- Dlow; temperature raises more when energy is added
16What is thermal equilibrium?
- AWhen 2 different objects reaching the same temperature
- BAmount of heat needed to raise 1 gm of material 1°C
- CChange in temperature
- DAmount of energy an object can sustain
17What do engines or motors do?
- AThey are machines designed to make electricity by making a turbine turn
- BThey are machines designed to make electricity by burning fuel
- CThey are machines designed to convert mechanical energy into other forms of energy
- DThey are machines designed to convert energy into mechanical energy
18What is internal combustion?
- AFuel sprayed into a cylinder which is then ignited and drives the piston (happening all together and inside motor)
- BFuel that is ignited outside of the motor along with combustion
- CBurning happening inside a engine
19What is external combustion?
- AFuel that is ignited outside of the motor along with combustion
- BBurning happening outside an engine
- CFuel sprayed into a cylinder which is then ignited and drives the piston (happening all together and inside motor)
Información
- Descripción
- Biology (HS Physical Science) Science Test sobre Temperature & Heat, creado por Selam H el 21/11/2013.
- Autor
- Selam H
- Idioma
- English
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- 573
- Etiquetas
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