Download Describe two energy transfers that happened in the

Plate Tectonics
Catastrophic Events - Lesson 15
Energy Transfer Assessment
The diagram shows Mount St. Helens, a volcano, and the three tectonic plates located in the Pacific
Northwest. Describe two energy transfers that happened in the diagram.
In your description, be sure to:
 Identify the forms of energy before and after each transfer.
 Describe where each energy transfer happened.
You may use words, labeled pictures, and/or labeled diagrams on the diagram below.
One transfer:
Another transfer:
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Plate Tectonics Energy Transfers Rubric
Catastrophic Events Lesson 15
Performance Description
Attributes
A 2-point response demonstrates the student understands the Standard 6-8 PS3A: Energy exists
in many forms: heat, light, chemical, electrical, motion of objects, and sound. Energy can be
transformed from one form to another and transferred from one place to another.
The response describes two energy transfers that happened in the diagram by:
Identifying the forms of energy before and after each energy transfer.
AND
Describing where each energy transfer happened.
Example:
One transfer: Heat energy transfers to kinetic energy in convection currents in the magma.
Another transfer: Heat energy is transferred from the magma to the air in the volcano.
Other examples of energy transfers in this system:
Identifies form(s) of energy before and after
Heat energy to heat energy
Heat energy to kinetic energy
Kinetic energy to kinetic energy
Describes where the energy transfers happened
 Any two objects with different temperatures
that are touching: From magma to air
 During a phase change: From the air to the
ocean water when water evaporates
 Conduction: from a warm specific part of an
object to a cooler specific part of the object
 Convection currents: heat in a substance
causing a fluid to move
 When heat is moving from one object to the
molecules of another object: From magma to
the molecules that form air
Between any two colliding objects:
 Between the Juan de Fuca plate and the
North American Plate
 From molecules of magma to molecules of
water
Kinetic energy to sound energy
From any moving object
Potential energy to kinetic energy
In any falling object
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A 1-point response demonstrates the student has partial understanding of the GLE.
2–3
A 0-point response demonstrates the student has little or no understanding of the GLE.
0–1
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Earth System Energy Transfers Rubric (continued)
Attributes of Energy Transfers
Note: The italicized print is the part of the “Example” credited for the attribute.
Description
Attributes
One transfer: Heat energy transfers to kinetic energy in convection currents in the magma.
Attribute Note: This attribute may only be credited with an attempt to describe where the transfer happened
(e.g. heat energy moves through the Earth system).
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Where transfer happened: Heat energy transfers to kinetic energy in convection currents in the
magma.
Attribute Notes:
1 This attribute may only be credited when the response attempts to identify the energy forms involved
(e.g. energy increased in the volcano).
2 This attribute may only be credited when the response describes a plausible location (e.g. energy
transferred from the ocean to Mount St. Helens is not plausible).
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Another transfer: Heat energy is transferred from the magma to the air in the volcano.
Attribute Note: This attribute may only be credited with an attempt to describe where the transfer happened
(e.g. heat energy moves through the Earth system).
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Where transfer happened: Heat energy is transferred from the magma to the air in the volcano.
Attribute Notes:
1. This attribute may only be credited with the response attempts to identify the energy forms involved
(e.g. energy increased in the volcano).
2. This attribute may only be credited when the response describes a plausible location (e.g. energy
transferred from the ocean to Mount St. Helens is not plausible).
Total Possible Attributes
1
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Scoring Techniques:
1. A maximum of two “Transfer” attributes and two “Where transfer happened” attributes may be credited per response.
Responses must be credited as “Transfer/Where transfer happened” pairs. When responses include more than two
pairs, the two pairs with the most attributes should determine the “Total Possible Attributes.” Therefore, the only way
a response can be credited 3 attributes is with one complete description of an energy transfer/transformation.
2. Responses describing two of the same type of energy transfers may be credited as “One transfer” and “Another
transfer” if “Where the transfer happened” is appreciably different in the given system (e.g. for a system with several
trees and some grass, light changes into chemical energy in a tree and grass may be credited for two transfers but
light changes into chemical energy in tree#1 and tree #2 should be credited as one transfer.
3. Responses describing an energy transfer unrelated to the given system should not be credited (e.g. in a Sun-EarthMoon system, heat changes into electricity in some devices should not be credited).
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Earth System Energy Transfers Rubric (continued)
General Notes:
1.
Incorrect Transfers/Transformations: Responses describing a correct and an incorrect energy transfer
or transformation may not receive credit for the corresponding attribute, transfer or where transfer
happened (e.g. light changes to heat and chemical energy in water, no credit for transfer). However,
responses may use the terms transfer and transformation interchangeably.
2.
Transfers: Responses may be credited as correctly describing energy being transferred from one object to
another by identifying the two objects and the energy form (e.g. heat energy is transferred from magma to
the volcano.)
3.
Transformations: Responses may be credited as correctly describing energy being transformed from one
form to another by identifying one object, and identifying the energy forms before and after the
transformation (e.g. light energy is transformed into heat energy in ocean water).
4.
Energy Terms as Verbs: Responses using a verb when describing an object’s energy change may not be
credited as identifying the energy form (e.g. the Sun heating the water cannot be credited as identifying
heat energy).
5.
Wave Phenomena: To be credited, responses describing waves as energy transfers must include an
interaction with matter such as reflection, refraction, or transformations of wave energy from or into other
energy forms (e.g. light waves transfer energy from the Sun to Earth then change into heat energy).
a)
Reflection can be credited as an energy transfer when the description includes the source or direction of the
wave before and after the reflection (e.g. sunlight is reflected off the aluminum foil to the can).
b) Refraction can be credited as an energy transfer when the description includes the medium for the wave before
and after the refraction (e.g. light is transferred through the air into the ocean).
6.
Synonyms for Energy Forms: Responses may be credited as correctly identifying an energy form when
the following acceptable terms are used.
a) heat energy: heat, thermal energy
b) sound energy: sound, sound waves, vibration energy
c) light energy: light, sunlight, light waves, light beams, radiant heat, light rays, solar/Sun energy, gamma rays,
x-rays, ultraviolet, infrared, microwaves, radio waves, electromagnetic waves
d) electrical energy: electricity, voltage, electric current, electric charge, electrical power
e) kinetic energy: energy of motion, mechanical energy (work may be credited for mechanical energy when used
appropriately)
f) potential energy: energy of position, elastic energy, gravitational energy, mechanical energy (work may be
credited for mechanical energy when used appropriately)
g) chemical energy: bond energy, food energy, food, glucose, ATP, energy-rich molecules, sugar, starch, protein,
fat, carbohydrate
h) nuclear energy: radioactive energy, radioactivity, fission energy, fusion energy, atomic energy
i) wave energy: light energy, sound energy
7.
Naming an Energy Form: Responses identifying an energy form in an object without describing a
transfer or transformation may not be credited any attributes for that transfer (e.g. magma has heat energy
and the plate has kinetic energy).
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