the heat is on!

Jan. 14-18

Deadline to Retake Summatives: Energy Forms & Transformations is Tuesday, 15th and for Energy Resources is Friday, 25th

goals of the week:

research and debate the advantages and disadvantages of using fossil fuels, nuclear, biomas, solar, wind, hydropower and geothermal

investigate the methods of thermal energy transfer, including conduction, convection, and radiation

verify through investigations that thermal energy moves in a predictable pattern from warmer to cooler until all the substances attain the same temperature such as an ice cube melting

warm up:

Monday– 

Using the graph above, what is the most significant way to decrease energy consumption in a household according to the graph provided?

  • Turn off computers and other electronics when they are not in use 
  • Increase the temperature of a house in warm months, and decrease it in cool months 
  • Turn off lighting that is not necessary, or when the household is empty
  • Keep the refrigeration door closed as much as possible to avoid letting cold air out.

TuesdaySome renewable energy resources produce more energy at certain times of the day or year. Which combination of energy resources are renewable resources that can produce a steady flow of energy 24 hours a day, year-round?

  • Geothermal energy and natural gas
  • Solar and Petroleum
  • Hydroelectric and Geothermal
  • Solar and Wind

Wednesday: Conduction can only occur between two objects when –

  • one object is less dense than the other.
  • both objects are in physical contact with each other.
  • one of the objects is made of a metal.
  • both objects are exactly the same temperature.

Thursday: click on this PDF for the warm up, convection demo

Friday: In an investigation a student places a frozen ice pack inside a beaker of hot water. The student records the temperature of the water over a time of 5 minutes. What observation is the student most likely to make and why?

  • Cold will transfer from the ice pack to the water through radiation decreasing the temperature of the water.
  • Thermal energy will transfer to the hot water through convection and it will increase in temperature.
  • Cold will transfer from the ice pack to the water through conduction decreasing the water’s temperature.
  • Thermal energy will transfer from the water to the ice pack through conduction decreasing the water’s temperature.

in class on…

Monday- students took their energy resources DCA, a formative.

Tuesday- students took their energy resources summative.

Wednesday, students learned how they did on both assessments above. Afterwards, we began our new unit watching this clip called Heat by StudyJam. Afterwards students began making their GKW for this unit. These words & definitions are found on my Google Classroom as a  Quizlet. This Friday, students will be have a quiz over them and they’ll be able to use their notebook in which these GKWs are to be written.

Thursday, students began and will finish tomorrow a fold-able, convection, conduction and radiation (see below). Students also received a homework assignment: Reading Science- Convection, Conduction and Radiation. See Google Classroom to download, if needed.

front
inside

homework:

Tuesday, begin working on their GKWs in prep for this Friday’s quiz over them.

the good, bad and ugly of energy

Jan. 8-12

this week’s goal(s):

research and debate the advantages and disadvantages of using fossil fuels, nuclear, biomas, solar, wind, hydropower and geothermal

warm ups:

Tuesday: As a renewable resource, hydroelectricity is generating more attention as environmental concerns rise.  What is one advantage of using this as an energy source?  Hydroelectric energy –

  • reservoirs can be used for irrigation of crops.
  • may divert water and alter normal water flow.
  • might disrupt the movements of migrating salmon.
  • sometimes causes flooding in surrounding areas.

Wednesday: One disadvantage to using coal to produce electricity is that coal –

  • forms in a short amount of time.
  • is abundant over a wide area.
  • is not environmentally friendly.
  • is relatively quite affordable.

Thursday: Natural gas is a fossil fuel formed within oil fields and coal beds.  What is an advantage of using natural gas as an alternative form of energy?

  • It releases relatively low emissions compared to other fossil fuels
  • The stored energy is less concentrated, so more needs to be burned
  • There is a limited supply since it is a non-renewable resource
  • it tends to be more expensive compared to other fossil fuels

Friday: A student was asked to give the disadvantages of using biomass as an energy source and stated that there are no disadvantages.  Which of the following best evaluates the response of the student? 

  • Incorrect, because biomass is available almost everywhere since it a byproduct
  • Correct, because biomass is a renewable fuel source if the biomass is harnessed properly 
  • Incorrect, because biomass is a less concentrated form of energy, making it inefficient
  • Correct, because the amount of harmful emissions released is less than other fuel sources

in class on…
Tuesday,
students watched this cool animation, introducing the topic of energy resources transforming into electricity. They were taught how to use my links under Energy Stuff found on my Cool Science Sites of this website. They began learning some advantages of converting fossil fuels into electricity. 

Wednesday-Friday, students will be given time to research the advantages and disadvantages of the resources used to provide usable energy. They are the resources mentioned in the goal of the week. To find a completed list of advantages and disadvantages go to my class notes/handouts/resources page. Under Energy, it’ll be posted. 

homework:

Thursday, complete the advantages and disadvantages for each resource for tomorrow.

Weekend, study the advantages and disadvantages info for the Energy Resources DCA on Tuesday, 15th summative.