FINAL Purcaro ENERGY TRANSFER, HEAT, MATTER, THERMAL ENERGY

24. What is thermal equilibrium?

• When two objects are at rest at the same time
• Potential energy
• When objects reach boiling point
• When two objects reach a common temperature

12. If two objects have different temperatures, heat will flow from the warmer object to the cooler object until ___________?

• They both have an equal temperature
• One object runs out of energy
• One object reaches a temperature of zero

11. When a substance changes from solid to gas and does not go through the liquid phase it is called what?

• Evaporation
• Condensation
• Freezing
• Sublimation

8. Why can liquids not be compressed easily?

• The particles are in a random arrangement
• The particles are closely packed
• The particles are free to move over each other

1. Solid particles are

• Loosely bonded and flowing
• Tightly packed
• Free to fly around
• Very hot

30. After testing, you may decide to modify your device. This is known as __________.

• Prototype
• Control
• Trial One
• Redesigning

16. What is the measurement of average kinetic energy of the particles in a substance?

• Celsius
• Kelvin
• Weight
• Temperature

14. What is thermal energy?

• A form of energy that shows brightness
• Potential energy
• A form of energy that is transferred between systems and objects
• A form of energy that you can hear

21. When you pick up an ice cube, what happens?

• Thermal energy flows from the ice cube to your hand
• Thermal energy flows from your hand to the ice cube
• Energy flows back and forth between your hand and the ice cube
• The ice cube sublimates

32. What type of heat transfer does a thermos prevent?

• Convection
• Radiation and conduction
• Convection and radiation