Investigation 5 Practice ’13-Z
Investigation 5 Practice ’13-Z
Write your answers to the following on a separate piece of
paper. Bring with you to the retake session you
scheduled.
1. Explain how energy transfers between objects of the
same temperature
2. Explain how energy transfers between objects of
different temperatures
3. Energy “flow” is the transfer of energy from one place to
another. Which direction does energy flow?
4. What equation is used to calculate the final temperature
when equal masses of water are mixed?
5. What equation is used to calculate how much heat
energy (calories) is transferred to or from a mass of water?
Write your answers to the following on a separate piece of
paper. Bring with you to the retake session you
scheduled.
3. Explain how energy transfers between objects of the
same temperature
4. Explain how energy transfers between objects of
different temperatures
3. Energy “flow” is the transfer of energy from one place to
another. Which direction does energy flow?
4. What equation is used to calculate the final temperature
when equal masses of water are mixed?
5. What equation is used to calculate how much heat
energy (calories) is transferred to or from a mass of water?
A plastic bottle filled with warm air is submerged in
cold water.
1. What direction does energy flow to cool the
air inside the bottle
2. List the materials the energy would have to
flow through.
3. How does energy transfer actually happen to
cool the air inside the bottle?
4. How long does the energy transfer happen?
A plastic bottle filled with warm air is submerged in
cold water.
5. What direction does energy flow to cool the
air inside the bottle
6. List the materials the energy would have to
flow through.
7. How does energy transfer actually happen to
cool the air inside the bottle?
8. How long does the energy transfer happen?
Write the 3 formulas for finding final temp., change in
temp. and calories transferred.
Write the 3 formulas for finding final temp., change in
temp. and calories transferred.
Stephen mixed 25 mL of water at 15°C and 25 mL of
water at 65°C. Calculate the answers to the following
questions. For each one, list the formula, plug in the
numbers (with units) and record the final answer.
Stephen mixed 25 mL of water at 15°C and 25 mL of
water at 65°C. Calculate the answers to the following
questions. For each one, list the formula, plug in the
numbers (with units) and record the final answer.
What is the final temperature of the water?
What is the change in temperature of the water?
How much heat energy was transferred from the hot
water?
How much heat energy was transferred to the cold water?
What is the final temperature of the water?
What is the change in temperature of the water?
How much heat energy was transferred from the hot
water?
How much heat energy was transferred to the cold water?
When a student mixes 50 mL of water at 15 ºC with 50
mL of water at 80ºC, what happens to the particles?
When a student mixes 50 mL of water at 15 ºC with 50
mL of water at 80ºC, what happens to the particles?
The warm water particles _________________ with the cold
water particles
The warm water particles start to move _____________ and in
the __________________ direction
The cold water particles start to move _____________ and in
the _______________ direction
The warm water particles _________________ with the cold
water particles
The warm water particles start to move _____________ and in
the __________________ direction
The cold water particles start to move _____________ and in
the _______________ direction
How much heat energy transferred from the hot water to
the cold water (3 steps)
How much heat energy transferred from the hot water to
the cold water (3 steps)
A student has two identical glasses of milk except that the
temperature of the milk in one glass is 15 ºC and the
temperature of the milk in the other glass is 80ºC. The
glass of milk at which temperature has more thermal
energy? Explain why…
A student has two identical glasses of milk except that the
temperature of the milk in one glass is 15 ºC and the
temperature of the milk in the other glass is 80ºC. The
glass of milk at which temperature has more thermal
energy? Explain why…
A student has two glasses of milk at the same temperature.
The only difference is that one glass is ½ full and the other
is ¾ full. The glass of milk at which glass has more thermal
energy? Explain why…
Multiple Choice – choose your answer and then SUPPORT
with reasoning or evidence why your answer is correct….
The temperature of a plastic cup is 20ºC. It is filled
with water that is 10ºC. Which of the following
describes how thermal/heat energy is transferred?
Support your answer
A. Heat energy is transferred from the water to the cup
until they are both at 15ºF.
B. Heat energy is transferred from the cup to the water
until they are both at 15ºF.
C. Heat energy is transferred from the cup to the water
until the cup is at 10ºC and the water is at 20ºC.
D. No heat energy is transferred between the cup and
the water, so the cup will stay at 20ºC and the water will
stay at 100ºC.
An empty paper cup is the same temperature as the air
in the room. A student fills the cup with cold water.
Which of the following describes how thermal/heat
energy is transferred? Support your answer
A. Thermal/heat energy is transferred from the cold
water to the cup until they are at the same temperature.
B. Thermal/heat energy is transferred from the cup to
the cold water until they are at the same temperature.
C. Thermal/heat energy is transferred from the cup to
the cold water until the cup has no more thermal
energy.
D. Thermal/heat energy is not transferred between the
cup and the cold water.
A student is holding a cold piece of metal in her hand.
While she is holding the piece of metal, her hand gets
colder. Does the piece of metal get warmer? Why or
why not? Support your answer
A. Yes, the piece of metal will get warmer because some
thermal energy is transferred from the metal to the
student’s hand.
B. Yes, the piece of metal will get warmer because some
thermal energy is transferred from the student’s hand
to the metal.
C. No, the piece of metal will stay at the same
temperature because an equal amount of thermal
energy is exchanged between the student’s hand and
the metal.
D. No, the piece of metal will stay at the same
temperature because thermal energy is not transferred
between the student’s hand and the metal.
A student has two glasses of milk at the same temperature.
The only difference is that one glass is ½ full and the other
is ¾ full. The glass of milk at which glass has more thermal
energy? Explain why…
Multiple Choice – choose your answer and then SUPPORT
with reasoning or evidence why your answer is correct….
The temperature of a plastic cup is 20ºC. It is filled
with water that is 10ºC. Which of the following
describes how thermal/heat energy is transferred?
Support your answer
A. Heat energy is transferred from the water to the cup
until they are both at 15ºF.
B. Heat energy is transferred from the cup to the water
until they are both at 15ºF.
C. Heat energy is transferred from the cup to the water
until the cup is at 10ºC and the water is at 20ºC.
D. No heat energy is transferred between the cup and
the water, so the cup will stay at 20ºC and the water will
stay at 100ºC.
An empty paper cup is the same temperature as the air
in the room. A student fills the cup with cold water.
Which of the following describes how thermal/heat
energy is transferred? Support your answer
A. Thermal/heat energy is transferred from the cold
water to the cup until they are at the same temperature.
B. Thermal/heat energy is transferred from the cup to
the cold water until they are at the same temperature.
C. Thermal/heat energy is transferred from the cup to
the cold water until the cup has no more thermal
energy.
D. Thermal/heat energy is not transferred between the
cup and the cold water.
A student is holding a cold piece of metal in her hand.
While she is holding the piece of metal, her hand gets
colder. Does the piece of metal get warmer? Why or
why not? Support your answer
A. Yes, the piece of metal will get warmer because some
thermal energy is transferred from the metal to the
student’s hand.
B. Yes, the piece of metal will get warmer because some
thermal energy is transferred from the student’s hand
to the metal.
C. No, the piece of metal will stay at the same
temperature because an equal amount of thermal
energy is exchanged between the student’s hand and
the metal.
D. No, the piece of metal will stay at the same
temperature because thermal energy is not transferred
between the student’s hand and the metal.