The First Law of Thermodynamics

To find the change in thermal energy, we need to use ____

• ΔU = 𝑚𝐶∆𝑇

• ΔU = ∆𝑇

• ΔU = 𝐶∆𝑇

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

A kettle on fire receives 8000 J, the kettle kept shaking with 500 J work. Find the change in the kettle's thermal energy?

• 500 J

• 7500 J

• 8000 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Which law of thermodynamics is also known as the Law of Energy Conservation?

• Zeroth Law

• First Law

• Second Law

• Third Law

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Which of the following is an example of the First Law of Thermodynamics in daily life?

• An ice cube melting at room temperature.

• Riding a bicycle and converting chemical energy into mechanical energy.

• Cooling atoms to extremely low temperatures.

• Using a thermometer to measure temperature.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-3

The first law of thermodynamics is a restatement of the

• Zeroth law of thermodynamics

• law of heat addition

• principle of entropy

• conservation of energy

Tags

NGSS.HS-PS1-4

Which equation represents the First Law of Thermodynamics?

In a closed system, if 500 J of heat is added and 200 J of work is done by the system, what is the change in internal energy?

• 300 J

• 700 J

• 500 J

• 200 J

Tags

NGSS.HS-PS3-1

The First Law of Thermodynamics is also known as the Law of:

• Entropy

• Conservation of Energy

• Heat Transfer

• Thermal Equilibrium

Tags

NGSS.HS-PS3-1

Which of the following processes is an example of the First Law of Thermodynamics?

• A car engine converting fuel into motion

• Water freezing into ice

• A thermometer measuring temperature

• A mirror reflecting light

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

If a system does 150 J of work and its internal energy decreases by 100 J, how much heat was added to the system?

• 50 J

• 250 J

• 100 J

• 150 J

Tags

NGSS.HS-PS3-1