NC Standards
PSc.3.1.1
• Infer the ability of various materials to absorb or release thermal energy in order to conceptually relate mass, specific heat capacity, and temperature of materials to the amount of heat transferred. (Calculations with should be used to aid in conceptual development through laboratory investigation and analysis, not as problem-solving exercises.)
• Compare thermal energy, heat, and temperature.
• Relate phase changes to latent heat that changes the potential energy of particles while the average kinetic energy of particles (temperature) remains the same. (Link to PSc.2.1.2)
• Compare conduction, convection, and radiation as methods of energy transfer.
PSc.3.1.2
• Exemplify the relationship between kinetic energy, potential energy, and heat to illustrate that total energy is conserved in mechanical systems such as a pendulum, roller coaster, cars/balls on ramps, etc.
• Relate types of friction in a system to the transformation of mechanical energy to heat.
PSc.3.1.3
• Explain scenarios in which work is done, identifying the force, displacement, and energy transfer- work requires energy; when work is done on an object, the result is an increase in its energy and is accompanied by a decrease in energy somewhere else.
• Compare scenarios in which work is done and conceptually explain the differences in magnitude of work done using the relationship .
PSc.3.1.4
• Infer the work and power relationship:
• Determine the component simple machines present in complex machines – categorize a wedge and screw as variations of an inclined plane; a pulley and wheel & axle as variations of a lever.
• Explain the relationship between work input and work output for simple machines using the law of conservation of energy.
• Define and determine ideal and actual mechanical advantage:
• Define and determine efficiency of machines:
• Explain why no machine can be 100% efficient.
• Infer the ability of various materials to absorb or release thermal energy in order to conceptually relate mass, specific heat capacity, and temperature of materials to the amount of heat transferred. (Calculations with should be used to aid in conceptual development through laboratory investigation and analysis, not as problem-solving exercises.)
• Compare thermal energy, heat, and temperature.
• Relate phase changes to latent heat that changes the potential energy of particles while the average kinetic energy of particles (temperature) remains the same. (Link to PSc.2.1.2)
• Compare conduction, convection, and radiation as methods of energy transfer.
PSc.3.1.2
• Exemplify the relationship between kinetic energy, potential energy, and heat to illustrate that total energy is conserved in mechanical systems such as a pendulum, roller coaster, cars/balls on ramps, etc.
• Relate types of friction in a system to the transformation of mechanical energy to heat.
PSc.3.1.3
• Explain scenarios in which work is done, identifying the force, displacement, and energy transfer- work requires energy; when work is done on an object, the result is an increase in its energy and is accompanied by a decrease in energy somewhere else.
• Compare scenarios in which work is done and conceptually explain the differences in magnitude of work done using the relationship .
PSc.3.1.4
• Infer the work and power relationship:
• Determine the component simple machines present in complex machines – categorize a wedge and screw as variations of an inclined plane; a pulley and wheel & axle as variations of a lever.
• Explain the relationship between work input and work output for simple machines using the law of conservation of energy.
• Define and determine ideal and actual mechanical advantage:
• Define and determine efficiency of machines:
• Explain why no machine can be 100% efficient.
Vocabulary
energy
heat
specific heat
temperature
conduction
convection
radiation
kinetic energy
potential energy
work power
wedge
lever
screw
inclined plane
pulley
wheel & axle
work input
work output
ideal mechanical advantage
actual mechanical advantage
efficiency
law of conservation of energy
heat
specific heat
temperature
conduction
convection
radiation
kinetic energy
potential energy
work power
wedge
lever
screw
inclined plane
pulley
wheel & axle
work input
work output
ideal mechanical advantage
actual mechanical advantage
efficiency
law of conservation of energy
Online Text
Work and Power
Learning Target
I can explain work and give examples of work.
I can explain how energy is involved when work is done.
I can explain how energy is involved when work is done.
ps_work_and_power.pptx__physical_science_spring_2015___physical_science_fall_2015___physical_science_fall_2015___physical_science_fall_2015_.pptx | |
File Size: | 60 kb |
File Type: | pptx |
Work and Machines
Learning Targets
I can explain the law of conservation of energy using work input and work output.
I can compare work and power and understand their relationship.
I can compare work and power and understand their relationship.
ps_work_and_machines.pptx__physical_science_spring_2015___physical_science_fall_2015___physical_science_fall_2015___physical_science_fall_2015_.pptx | |
File Size: | 267 kb |
File Type: | pptx |
img_5083.m4v | |
File Size: | 256 kb |
File Type: | m4v |
Mechanical Advantage and Efficiency
Learning Target
I can describe and calculate ideal and actual mechanical advantage.
I can describe and calculate the efficiency of a machine.
I can describe and calculate the efficiency of a machine.
ps_mechanical_advantage_and_efficiency.pptx__physical_science_spring_2015___physical_science_fall_2015___physical_science_fall_2015___physical_science_fall_2015_.pptx | |
File Size: | 62 kb |
File Type: | pptx |
Simple Machines
Learning Targets
I can identify simple machines and simple machines within complex machines.
ps_simple_machines__1_.pptx | |
File Size: | 252 kb |
File Type: | pptx |
Energy
Learning Targets
I can analyze a system and show how energy is conserved.
I can calculate kinetic energy and potential energy.
I can calculate kinetic energy and potential energy.
potential_and_kinetic_energy.ppt | |
File Size: | 3830 kb |
File Type: | ppt |