Investigation 5 TEST: Energy Transfer

Name: ______Period: ______

Vocabulary (3 pts.)

ConductionEquilibriumMilliliters (mL)

TemperatureHeatDegrees Celcius (0C)

______Average kinetic energy of particles

______A unit of volume

______A unit of temperature

______Transfer of energy between particles that are touching.

______A form of energy that is related to kinetic energy.

______The condition when no observable changes are occurring.

  1. (1 pt.) Things heat up and cool down as a result of energy transfer. Which direction does energy flow during energy transfer events? (Circle the one best answer.)

A. Energy flows from hot materials to cold materials.

B. Energy flows from cold materials to hot materials.

C. Energy flows in both directions.

  1. (1 pt.) What happens when you put ice in a warm drink? (Circle the one best answer.)

  1. Heat flows from the ice to the drink.
  2. Heat flows from the drink to the ice.
  3. Cold flows from the ice to the drink.
  4. Cold flows from the drink to the ice

  1. (2 pts.) Mixing Equal Volumes of Water: A student mixed 50 mL of water at 0°C with 50 mL of water at 60°C. What is the final temperature of the water?

1. COPY / 2. SUBSTITUTE / 3. SOLVE AND LABEL
  1. (1 pt.) June put a vial of plain water into a container of ice. She put the container into a freezer. The starting temperatures are listed below.

Water in vial (small container in center) = 22°C

Ice = 0°C Freezer (Surroundings) = -17°C

In the box on the diagram, draw arrows to show the direction of energy transfer.

  1. (2 pts.) A cube of iron at 1200C is placed into a cup of water at 100C to cool. Explain the energy transfer in this system. Make sure to include when the overall energy transfer will stop.

______

  1. (2 pts.) Explain what is meant by “energy is conserved”. ______

Multiple Choice(5 pts): Choose the one best answer and write it on the line.

  1. ______What is defined as the average kinetic energy of the particles in a substance?

A.specific heatB. massC. conductivityD. temperature

  1. ______How is heat best classified?

A. A gasB. A liquidC. As energyD. As matter

9. ______As the temperature of an object increases, so does the ______of the particles.

A. kinetic energy B. massC. composition (chemical make-up)

10. ______When energy is transferred from one place to another, the amount of energy in the system

A. increases.B. decreases.C. doubles.D. does not change.

11.______