Download mid-summative practice exam 5

MID-SUMMATIVE PRACTICE EXAM 5
Name _____________ Block ____
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1. A plastic bottle filled with cold air is submerged in warm water.
a. What direction does energy flow?
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b. What materials does the energy flow through?
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c. How does energy transfer cool the air inside the bottle?
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2. What happens when you pour cold creamer into hot tea? (mark ALL correct answers)
a. _____ Energy flows to the tea.
b. _____ Energy flows from the tea.
c. _____ Energy flows from the creamer.
d. _____ Energy flows to the creamer.
3. What happens when you put ice in a warm drink? (circle ONE best answer)
a. Heat flows from the drink to the ice.
b. Heat flows from the ice to the drink.
c. Cold flows from the ice to the drink.
d. Cold flows from the drink to the ice.
4. Things heat up and cool down as a result of energy transfer. Which direction does
energy flow during energy transfer events? (answer the following as TRUE or FALSE)
a. _____ Energy flows from cold materials to hot materials.
b. _____ Energy flows from hot materials to cold materials.
c. _____ Energy flows in both direction.
5. A student mixed 50 mL of water at 5 degrees Celsius with 50 mL of water at 55
degrees Celsius. Please show your work.
a. What is the final temperature of the water? ______
b. How much heat energy transferred from the hot water? ______
c. How much heat energy transferred to the cold water? ______
6. A slow moving particle and a fast moving particle collide.
a. Which particle has less kinetic energy? Slow moving or fast moving?
b. Which particle has more kinetic energy? Slow moving or fast moving?
c. What happens to the kinetic energy when the particles collide?
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d. Describe the motion of each particle after the collision.
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7. A piece of metal is sitting at the bottom of a cup of water. The metal and water are
at the same temperature.
a. Which particles have less kinetic energy?
A. The metal particles
B. The water particles
C. Neither
b. Why did you choose this answer?
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c. Describe the energy transfer between the water and the iron.
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8. Phil put a vial of cold water into a container of ice water. She put the container on a
sunny windowsill. The starting temperatures of are listed below.
 Water in the vial
13 degrees Celsius
 Ice water in the container
5 degrees Celsius
 Room temperature
35 degrees Celsius
In the diagram below, draw arrows points to show the direction of energy transfer
between:
a. the room and the ice water
b. the room and the water in the vial
c. the ice water and the water in the vial