Unit 10.Quiz 2.LT 1/2/3/4

[LT 1] All of these beakers of water are at a temperature of 22°C. Select the one with the most thermal energy. Note the volume of water in the captions below each image.

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• They all have the same amount of thermal energy.

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U10.LT 1

[LT 1] Engines lose efficiency due to heat loss due to the 2nd Law of Thermodynamics, which states

• Thermal energy always moves transfers from hotter matter to cooler matter.

• An object will remain in motion until acted upon by an outside force.

• Mechanical energy is the combination of kinetic and potential energies.

• Convection requires fluids to occur.

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U10.LT 1

[LT 1] A measure of the average kinetic energy of the individual particles in an object is called

• Thermal energy

• Conduction

• Convection

• Temperature

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U10.LT 1

[LT 2] In a lava lamp, the heat lamp warms the wax, causing it to rise. Once it rises to the top it begins to cool, then it sinks. This is an example of... 

• groovy vibes

• convection

• conduction

• radiation

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U10.LT 2

[LT 2] Conduction can only occur between two objects when...

• one object is less dense than the other.

• both objects are in physical contact with each other.

• one of the objects is made of a metal.

• both objects are exactly the same temperature.

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U10.LT 2

[LT 2] What does radiation pass through easiest?

• Solids

• Liquids

• Gases

• Vacuums (empty space)

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U10.LT 2

[LT 3] Insulation is rated on how good it is at resisting the transfer of heat. This rating is called its...

• R-Value

• Pink Quotient

• I-Value

• Emissivity Rating

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U10.LT 3

[LT 3] Jenny poured some hot chocolate into a cup and stirred it with a metal spoon.  She noticed the spoon was really warm.  What is the best explanation for this?

• The spoon is a conductor.

• The spoon reflects heat.

• The spoon is an insulator.

• She touched the spoon first and waited to touch the cup.

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U10.LT 3

[LT 3] The rubber that makes up the handle on the pan is considered a thermal ​ (a)   because thermal energy moves slowly through this material.

• insulator
• conductor
• regulator
• temperature

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U10.LT 3

[LT 4] Air ducts are made from shiny, reflective materials to prevent which transfer of thermal energy?

• Conduction

• Convection

• Radiation

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U10.LT 4