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Lesson 2.6 Energy Transfer and Heat Capacity Review

Last updated 7 months ago
26 questions
Untitled Section
Required
1

Thermal energy

Required
1

Pick all the phrases that could be used to describe potential energy

Required
1
The law of conservation of energy says that is the energy of the___________ increases, then the energy of the surroundings ______________ by the _________ amount.
Other Answer Choices:
system
decreases
a smaller amount
increases
same
a larger
Required
1
Work and Heat are similar because they both ____________________ .
Other Answer Choices:
can be the total energy of the system
transfer energy
convert mass into energy
involve using a force to move something
Required
1

Chemical Energy is

Required
1
Combustion is an _______________ reaction because heat is _____________ .
Other Answer Choices:
exothermic
endothermic
absorbed
released
23

Match the vocabulary word with its definition

Draggable itemCorresponding Item
Chemical Potential Energy
the energy of moving particles
C
Energy used to move particles in the presence of a force
calorie
pulls particles together
Temperature
pulls particles apart
Law of Conservation of Energy
Energy associated with attractive forces
ΔT
Energy that enters or leaves a system
joule
Energy transfer by particles colliding with each other
Potential Energy
Energy transfer by light energy being absorbed or released
Kelvin
energy associated with attractive forces between atoms or molecules
Absolute Zero
energy is entering the system
Specific Heat Capacity
energy is leaving the system
Work
energy can be neither created or destroyed
ΔQ
Measures the average kinetic energy of the particles in the system
Conduction
the amount of energy needed to increase the temperature of one gram of a substance by one degree Celcius
Calorie
the temperature at which no particles are moving in a system
Heat
temperature scale that starts at absolute zero
Endothermic process
symbol for change in
Radiation
heat the flowed into or out of the system
Repulsive force
change in temperature of the system
Attractive force
specific heat capacity of a substance
Exothermic process
S.I (metric) unit of energy
Kinetic Energy
imperial system unit of energy
Δ
Food calories- is equal to 1000 calories
4

Sort the

  • Heat
  • Kinetic Energy
  • Potential Energy
  • Work
  • Determines the total energy of the system
  • Changes the energy of the system
Revewing Heat Capacity
1

Which substance has the most energy, the brick or the water?

1

How can one substance have more energy than another if they are both the same temperature?

1

Use the slider to turn on the heat. Which substance heats up the quickest.

1

Which substance requires the most energy to change its temperature 1 degree?

1

Assume that the brick and the water have the same mass. Which substance has the highest heat capacity?

10

Design an experiment using the simulation to determine whether the iron or the brick has the highest heat capacity. Be sure to describe your procedure. The evidence that you obtained and then explain how that evidence supports your conclusion. For full points, you must use the definition of heat capacity in your explanation.

1

The coldest temperature in Antartica is

1

If the air above the ice is at -90°C and the ice is not melting how cold is the surface of the ice?

4
All solids, liquids and gasses have a specific heat capacity. In the heating curve below, we are starting with a sample of ice from that very cold ridge in Antartica. Label each part of the curve with the correct name for the energy being absorbed between the two points.
Other Answer Choices:
Heat Capacity
Heat Capacity
Heat of Fusion
Heat of Vaporization
6

Compare the heating curves of these two substances and then chose the substance for which each of the following is true.

Substance 1
Substance 2
Lowest Melting Point
Lowest Boiling Point
Lowest Heat Capacity
Most temperature change for 1 unit of heat
Requires most heat to melt
Requires most heat to change temperature of liquid
Reviewing Energy Transfer
1. Click on the Systems Box.
2. Select the Pipe and the generator and the water.
3. Click on the box for the energy symbols.
If you have it set up correctly, it should look like this.

Open the pipe and watch the energy flow, it should look like this

Watch the simulation and then use your observation to fill in the statements below.
7
The _____________________ of the water is high when it is in the pipe because the water is attracted to the earth. As the water falls, the _____________________ of the water is converted to ___________________ . The ___________________ of the water is converted to _________which is used to turn the wheel. When the right-hand side of the wheel moves it goes from a position with ________ potential energy to a position with _________ potential energy.
Other Answer Choices:
potential energy
low
work
kinetic energy
high
5
The energy entering the water is _________ which is converted to___________________ which increases the __________ of the particles in the system and _________ which reduces the ______________________ between the particles.
Other Answer Choices:
attractive forces
heat
speed
kinetic energy
work
2
An example of energy flowing into the system is the energy blocks being transferring from the __________ to the __________ .
Other Answer Choices:
generator
air
wheel
water
2
An example of energy flowing out of the system is the energy blocks being transferred from the __________ to the ________ .
Other Answer Choices:
generator
water
wheel
air
1
When the temperature of the water is constant, the number of energy blocks entering the water in the container is _____________ the number of energy blocks leaving the containing.
Other Answer Choices:
more than
equal to
less than
1

Click on the spot where the thermal energy is being transformed to mechanical energy.

2

Play with the simulation by changing the sources of energy and the mechanisms of transfer.
What is an example of energy being transferred using radiation?

2

Play with the simulation by changing the sources of energy and the mechanisms of transfer.
What is an example of energy being transferred using conduction?