e-Worksheet: The Zeroth Law and First Law of Thermodynamics

The sum of the (Kinetic Energy_Particles + Potential Energy_Particles) in a system, is the _____ _____ of the system.

(a)  

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NGSS.HS-PS3-1

Measuring the average kinetic energy of all the particles in the beaker of water is measuring the (a)   of the water.

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NGSS.HS-PS3-2

_____ _____ is the total kinetic energy of the random motion of the atoms or molecules composing the water.

(a)  

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NGSS.HS-PS3-4

NGSS.HS-PS3-2

One way to change a body's internal energy(U) is to have heat transfer between bodies. In the Figure shown with the lavender blocks in thermal contact, heat transfer would _____.

• flow from left to right

• flow from right to left

• go back and forth between the 2 objects

• not flow between the 2 objects.

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NGSS.HS-PS3-4

The internal energy(U) of a body depends upon which of the following properties? _____.

• Physical State of Matter

• Material Composition

• Temperature

• Internal energy depends upon all of these properties.

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NGSS.HS-PS1-5

Essentially, the (a)   is the Law of Conservation of Energy applied to a thermal system.

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NGSS.HS-PS3-4

A(n) (a)   is a well-defined set of atoms, molecules, particles or objects.

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NGSS.HS-PS3-1

NGSS.HS-PS3-2

NGSS.HS-PS1-3

The mathematical equation, using symbols, representing the First Law of Thermodynamics is _____.

• U₁ + U₂ = W + Q

• Δ U = Q - W

• W₂ - W₁ = Q - ΔU

• Δ U = Q + W

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NGSS.HS-PS3-1

Work(W), a form of energy, is considered as (a)   (word) when work is done on the system.

Which piston in the Figure (b), represents the motion of air particles inside the piston, if it is in thermal contact with a heat source, at the bottom? The _____ piston, represents the motion of heated air particles.

• right

• left

• both

• neither

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NGSS.HS-PS3-4

NGSS.HS-PS3-2