Activity 4.3 Let us investigate Which of the spoons get hotter? Class 7

Activity 4.3 Let us investigate Class 7

Activity 4.3 Let us investigate (Page 47) Class 7

Question 1.

Which of the spoons get hotter? What does this experiment tell us about heat transfer along the two spoons? Class 7

Answer:

Metal spoon is hotter to touch than wooden spoon. Heat transfers through the metal spoon easily, making it hotter. While heat transfers through the wooden spoon poorly. Hence, metals are good conductors of heat, but wood is a poor conductor of heat.

Question 2.

Have you ever seen an electrician using a screwdriver? What type of material is used for making its handle? Class 7

Answer:

Yes. The handle of a screwdriver is usually made of plastic or wood.