Mr. Meles' Blog
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Tuesday, 7 June 2016
Chapter 1 Links for Review
1.1 Crossword
https://sciencesource.pearsoncanada.ca/puzzles/puzzle_01_1/
1.2 Crossword
https://sciencesource.pearsoncanada.ca/puzzles/puzzle_01_2/
1.3 Crossword
https://sciencesource.pearsoncanada.ca/puzzles/puzzle_01_3/
1.1 Quiz
https://sciencesource.pearsoncanada.ca/quizzes/quiz_01_1SLjG2.htm
1.2 Quiz
https://sciencesource.pearsoncanada.ca/quizzes/quiz_01_2vRCiM.htm
1.3 Quiz
https://sciencesource.pearsoncanada.ca/quizzes/quiz_01_35YRu2.htm
Read about food chains
http://www.vtaide.com/png/foodchains.htm
Food Chain Examples
http://www.coolantarctica.com/Antarctica%20fact%20file/wildlife/whales/food-web.php
Brain Pop Video on Food Chains
https://www.brainpop.com/science/ecologyandbehavior/foodchains/
Brain Pop Food Chain Game
https://www.brainpop.com/games/foodchaingame/
Desert Food Web Example
http://www.vtaide.com/png/desertBiomes.htm
Boreal Forest Food Web Example
http://www.vtaide.com/png/taiga.htm
Temperate Rain Forest Example
http://www.vtaide.com/png/temperateBiomes.htm
Practice Food Webs
Meadow
http://www.harcourtschool.com/activity/food/meadow_activity.html
Arctic
http://www.harcourtschool.com/activity/food/arctic_activity.html
Pond
http://www.harcourtschool.com/activity/food/pond_activity.html
Study Guide for Grade 7 Chapter 1 Test
Key Terms
□ abiotic
□ bacteria
□ biotic
□ carnivores
□ chlorophyll
□ community
□ consumers
□ decomposers
□ detritivores
□ ecosystem
□ food chain
□ habitat
□ herbivores
□ nutrients
□ omnivores
□ organic matter
□ oxygen
□ photosynthesis
□ populations
□ predator
□ prey
□ producers
□ scavengers
□ species
· Examples of biotic – biotic, abiotic – biotic, and biotic – abiotic interactions
· The process of photosynthesis
· The five basic needs of living things
· The roles of producers
· Predator-prey relationships
· Food chains and food webs
Friday, 27 May 2016
Chapter 10 Links for Review
10.1 Quiz
https://sciencesource.pearsoncanada.ca/quizzes/quiz_10_1paqKt.htm
10.2 Quiz
https://sciencesource.pearsoncanada.ca/quizzes/quiz_10_2KLylM.htm
10.3 Quiz
https://sciencesource.pearsoncanada.ca/quizzes/quiz_10_3YEEdN.htm
10.4 Quiz
https://sciencesource.pearsoncanada.ca/quizzes/quiz_10_4fY7Rd.htm
10.1 Crossword
https://sciencesource.pearsoncanada.ca/puzzles/puzzle_10_1/
10.2 Crossword
https://sciencesource.pearsoncanada.ca/puzzles/puzzle_10_2/
10.3 Crossword
https://sciencesource.pearsoncanada.ca/puzzles/puzzle_10_3/
10.4 Crossword
https://sciencesource.pearsoncanada.ca/puzzles/puzzle_10_4/
Chapter 10 Review Quiz
http://wps.pearsoned.ca/ca_school_ontarioscience_7-8/102/26141/6692106.cw/content/index.html
Chapter 10 Matching Terms
https://sciencesource.pearsoncanada.ca/resources/gr7_matchquiz_ch10/
Chapter 10 Labeling Practice
https://sciencesource.pearsoncanada.ca/resources/gr7_labelquiz_ch10/
Convection Example Video
https://sciencesource.pearsoncanada.ca/resources/battlingbottles.php
Heat Radiation Animation
https://sciencesource.pearsoncanada.ca/resources/radiation.swf
Conduction, Convection, Radiation Animation
http://www.wisc-online.com/objects/heattransfer/
Pop-Can Implosion Video
https://sciencesource.pearsoncanada.ca/pgs/video.php?id=12
Adding Heat to Particles Activity/Animation
https://sciencesource.pearsoncanada.ca/resources/slg.swf
Forms of Energy Matching
https://sciencesource.pearsoncanada.ca/resources/03_forms.swf
Thermal Radiation Face Matching
http://spaceplace.nasa.gov/ir-matching/en/
Energy Transformation Activity
http://www.phschool.com/webcodes10/index.cfm?fuseaction=home.gotoWebCode&wcprefix=cad&wcsuffix=1020
Information About Energy Transformations
http://www.energykids.eu/energy-transform
Types of Energy PowerPoint
https://sciencesource.pearsoncanada.ca/pgs/resource.php?found=slideshow_gr7_pg283_energyforms.ppt&plevel=7
Energy Transformation PowerPoint
https://sciencesource.pearsoncanada.ca/pgs/resource.php?found=slideshow_gr7_pg284_transform.ppt&plevel=7
How a Thermometer Works
http://www.energyquest.ca.gov/how_it_works/thermometer.html
What is an Expansion Joint
http://en.wikipedia.org/wiki/Expansion_joint
Beat the Heat! Game
http://spaceplace.nasa.gov/beat-the-heat/en/
Infrared Image Game
http://spaceplace.nasa.gov/ir-photo-album/en/
Wednesday, 25 May 2016
Chapter 10 Test Study Guide
Chapter 10
Test Study Guide
Review the
following:
Textbook Section
10.1
1. All 10 forms of energy
2. How energy can be transformed from on type of energy to another; e.g., a candle burns chemical energy and it is changed to light energy and thermal energy.
Review Section 10.2
1. The definitions of temperature, heat, and thermal energy. Understand the difference between these three.
Review Section
10.3
1. Review how solids, liquids and gases behave when heated or cooled. (Expansion and Contraction)
2. Understand how we apply our knowledge of solids liquids and gases expanding and contracting in our daily lives; e.g., leaving space for air at the top of sealed bottles of liquids. (Review package worksheets)
10.4
1. Review the three forms of thermal energy transfer (conduction, convection, and radiation) and how they work.
2. Understand how we apply our knowledge of thermal energy transfer; e.g., wearing light clothes on hot days.
Key Terms
1. Review how solids, liquids and gases behave when heated or cooled. (Expansion and Contraction)
2. Understand how we apply our knowledge of solids liquids and gases expanding and contracting in our daily lives; e.g., leaving space for air at the top of sealed bottles of liquids. (Review package worksheets)
10.4
1. Review the three forms of thermal energy transfer (conduction, convection, and radiation) and how they work.
2. Understand how we apply our knowledge of thermal energy transfer; e.g., wearing light clothes on hot days.
Key Terms
□
chemical energy
□
conduction
□
convection
□
convection current
□
elastic energy
□
electrical energy
□
energy
□ energy transformation
□ fluids
□
gravitational energy
□
heat
□
infrared waves
□
light energy
□
magnetic energy
□
mechanical energy
□
nuclear energy
□
particle theory of matter
□ thermometer
□
radiation
□
sound energy
□
temperature
□ thermal
energy
Chapter 10 Notes
Here are some notes for section 10.2 and 10.3
Temperature – The
average speed of the particles in a substance (we use a thermometer to take the
temperature)
Heat – Is the
thermal energy transferred from an area of higher temperature to lower
temperature
Conduction
· The
transfer of heat through a solid or between a solid and another solid, a
liquid, or a gas that is in contact with it
· Conduction
can also occur from liquid to solid and gas to solid.
· Conduction
always occurs from a warmer region to a cooler region.
· Conduction
occurs when warmer particles bump into cooler particles making them vibrate
faster.
· Metals
are better heat conductors than non-metals because free electrons carry heat
quickly through the material.
Convection
· Convection -
The transfer of thermal energy by moving particles in fluids
· As
the particles of fluids (gases and liquids) are heated, they move faster and
expand; this expansion makes the fluids less dense so they rise
· When
warmer fluids rise, cooler fluids move downwards; this creates a “convection
current”
· The
convection current continues in a pot of soup because the warmer soup particles
in a pot cool when they make contact with the air and then sink. These
particles are heated again once they meet the bottom of the pot.
· Convection
currents help heat your home through your furnace heating system.
Radiation
· Radiant
energy is the transfer of energy by invisible waves given off by the
energy source
· These
invisible waves are called infrared waves (a type of electromagnetic wave from
the sun)
· Infrared
waves are given off by all heat sources, including you
· Heat
is radiant energy from the sun that reaches your skin
· Radiant
energy warms up objects when the waves of radiant energy come into contact with
matter making the particles vibrate faster
Answers to Conduction and Radiation Worksheets
Answers to
Conduction Worksheet
1. On a cold winter day, why would an iron post in a park feel much colder to the touch than a wooden bench?
1. On a cold winter day, why would an iron post in a park feel much colder to the touch than a wooden bench?
Iron is a better heat conductor than wood. The
iron will conduct the heat away from your hand faster than wood; this makes
your hand feel colder when you touch iron
2. Potatoes cook from the outside in.
a) Why
does a small potato cook faster than a large potato?
Smaller potatoes have fewer particles, so heat takes
less time to reach the centre.
b) Why
does sticking a metal skewer through the middle of a potato make it cook
faster?
Heat will be conducted through the skewer into the
centre of the potato and it will cook from the inside out.
Answers to Radiation Worksheet
1) Radiation waves are absorbed by the person in front
of you so you do not feel the heat.
2) White clothing reflects infrared radiation and
black clothing will absorb this radiation.
3) The shiny suits will reflect the strong heat
radiation from the sun so the astronauts do not overheat.
4) Insulation is a poor heat conductor and it contains
glass pieces to reflect heat back into your home.
5) In summer, heat is reflected out into the
environment and in winter, heat is reflected back into your home.
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