5.4 Thermodynamics

What is the second law of thermodynamics state

• Cold air always rises
• Hot air always rises
• thermal energy can be lost
• Thermal energy always transfers to cooler objects

Tags

NGSS.HS-PS3-4

What is "Entropy"?

• The tendency of objects to warm up
• The tendency of energy to spread out
• The tendency of energy to make heat
• The tendency of objects to do work

Tags

NGSS.HS-PS3-4

In order for energy to be less concentrated what must be done?

• Heat released
• Reduce thermal energy
• Work
• Increase Radiation

Tags

NGSS.HS-PS3-4

What heating system is most common in newer homes?

• Forced air
• A Radiator
• Electrical
• Convection

What do we call the relationship between thermal energy, heat and work?

• Closed System
• Entropy
• Conductors
• Thermodynamics

Tags

NGSS.HS-PS3-4

Why can't a heat engine be 100% efficient?

• Heat is always created
• No work can be done
• Entropy is lost
• Thermal energy decreases

Tags

NGSS.HS-PS3-4

Which would have more entropy?

• Frozen ice cream
• Liquid Ice cream

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In which of the following systems is entropy increasing?

• Putting together a puzzle
• Putting books on a shelf
• Breaking a plate
• Filling a jar of salt

Which of the following describes the first law of thermodynamics?

• The increase in thermal energy equals the work done
• Energy becomes less concentrated over time

How can energy be transferred from a cool object to a warm object?

• Work must be done
• Increase thermal energy
• Use convection
• Q=mTC

Tags

NGSS.HS-PS3-4