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Grade 7 Science – Heat Transfer

Objectives: Students will be expected to…

Compare transmission of heat by conduction, convection, and radiation (308-5)

Activity Description:

Using the provided cards, students must place each photograph, definition, or situational description in the related column, according to the method of heat transmission (conduction, convection, radiation).

Possible Activity Extension for Assessment:

Have the students explain a situation where all 3 methods of heat transfer may be present (ie boiling water on a wood stove in a one-room cabin during the winter and burning yourself on the handle of the pot).

Photos obtained from the following websites:

http://www.roasterproject.com/2010/01/heat-transfer-the-basics/ http://coraifeartaigh.wordpress.com/2010/02/09/heat-transfer/ http://www.ehow.com/about_5157531_latent-heat-transfer.html http://www.gni.ca/insulation-101.cfm http://mamontoff.org/science-heat-transfer.htm http://kids.britannica.com/comptons/art-53415/heat-flows-from-the-

hot-end-to-the-cool-end http://www.finecooking.com/articles/convection-ovens.aspx http://www.ifood.tv/blog/how-to-clean-convection-oven http://www.vernier.com/location/?redirect=%2Finnovate%2Fheat-

conduction%2F http://keltechnologies.com/preview/index.php/facts-about/

understanding-heat-transfer.html

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When hot air fills a hot air balloon, the balloon rises.

Leaving a metal spoon in a cup of hot chocolate and the handle becomes too hot to touch.

Submerging yourself into cold water and you feel cold.

Lying on the beach on a sunny summer day and feeling warmth from the sun.

The blobs in a lava lamp rising and falling.

When a glassblower puts a wad of glass into a fire to heat up before shaping.

How your microwave heats up your food.

The reason your basement is cooler in the summer than the upstairs.

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CONDUCTION CARDS

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CONVECTION CARDS:

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RADIATION CARDS:

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