MHSB - 7 - Science :: Heat

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MSCERT-Sci-Grade 7

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Course content
Textbook
Teaching learning resources

Course Content / Subtopic list:

Transfer of heat
Modes of heat transfer : Conduction, convection and radiation
Good and bad conductors of heat
Expansion and contraction of a solid substance due to heat
Expansion and contraction of liquids due to heat
Expansion and contraction of gasses due to heat
Thermos flask (Dewar Flask)

English Medium

English medium textbook

Marathi Medium

Marathi medium textbook

Lesson Plan

[Contributor - Prachi Sawant]

Dear Volunteer,

Please find below the detailed lesson plan and PPT for this chapter in the language mentioned against the respective link. While the lesson plan will give an overall flow of the lesson, the PPT will include lesson flow as well as the presentations for the class.

https://drive.google.com/open?id=1H4jtOIw2E7kS9qLzlQqp1YMiS0EUyOgO (Lesson Plan - English)

https://drive.google.com/open?id=1BliTuoPyeZn1hxai5OOtQXIoU9NenK02 (PPT - Marathi)

You may use the content as it is or download and modify them to suit the students requirements.

If you feel any major modifications or additions are carried out by you in the form of adding any new activity, presentations, videos etc. we request you to send the modified version to submitcontent@evidyloka.org for enabling upload the modified version.

The worksheets of the lesson can be accessed from the worksheet tab.

Kindly rate the lesson plan and share your suggestions and comments on the lesson plan in the comments box below. Your valuble suggestions and comments will help us to improve the content.

Videos

[Contributor - Kripa S]

https://www.youtube.com/watch?v=c8yUG71WasA (Effects of heat)

[Contributor - Prachi Sawant]

Lesson Plan version 1.1 videos

https://www.youtube.com/watch?v=NiG3V7KXVxw (Conduction)

https://www.youtube.com/watch?v=x0N5HVrX4IA (Convection)

https://www.youtube.com/watch?v=54omR6h1WXY (Radiation - English)

https://www.youtube.com/watch?v=a3jf31qzWYE (Radiation - Hindi)

https://www.youtube.com/watch?v=ne8oPFTM_AU (Expansion and contraction)

https://youtu.be/5M_XtIVE_u4 (Balloon expansion)

https://www.youtube.com/watch?v=rRDyioqL8AI (Working of Thermometer)

https://www.youtube.com/watch?v=2BMRx45Nt5I (Working of thermos flask)

Images

[Contributor - Anu Nived]

https://previews.123rf.com/images/semenovigor/semenovigor1402/semenovigor140200004/26024518-Digital-Thermometer-instrument-for-measuring-temperature-Stock-Photo.jpg (digital thermometer)

http://s3-ap-southeast-1.amazonaws.com/subscriber.images/physics/2016/10/01131353/63.png (conductors and insulators)

https://schoolworkhelper.net/wp-content/uploads/2010/08/Convection-Conduction.jpg (transfer of heat)

Activities

[Contributor - Arshea Bimal]

1. Ask the students to name a few things that are hot, cold.

2. Take three large mugs. Label them as A, B and C. Put cold water in mug A and hot water in mug B. Mix some cold and hot water in mug C. Now dip your left hand in mug A and the right hand in mug B. After keeping the hands in the two mugs for 2–3 minutes, put both the hands simultaneously in mug C. Do both the hands get the same feeling?

[Contributor - Prachi Sawant]

Lesson Plan version 1.1 activities

1. Ask children to rub their palms against each other and put them on their cheeks. What do they feel?

2. Get a glass full of hot water. Dip a spoon or steel ruler in it for some time and remove. Touch the end of the spoon.

3. Take three rods and apply wax spots on equal distances. Stick one pin upright on each wax spot. Heat one end of the rods using a candle. Observe

4. Heat some water in a beaker and add few potassium permanganate crystals. Observe carefully.

5. Take water in a test tube and heat it near the mouth of test tube. Drop an ice cube wrapped with wire gauge in the text tube. Observe.

6. Colour and its ability to absorb Radiation. Take two aluminum tins of same size. Colour outer surface of a tin black. Place one glass of water in each tin and close the lid. Place in sun for few hours. Measure the temperature of water in both glasses.

7. Get a glass full of hot water. Dip a spoon, plastic ruler, pencil, divider, etc. in it for some time. Then touch the other end. Ask them to enter their observations in the tabular format

8. When two almost equal size bowls get stuck in each other, we heat the outer bowl to separate them. If possible take a demo.