Question

8.) warming up by standing close to a campfire is an example of a. radiation b. conduction c. convection 9.) frying an egg on a hot pan is an example of a. radiation b. conduction c. convection 10.) the circular movement of “lava” in a lava lamp is an example of a. radiation b. conduction c. convection 11.) a material that allows heat to move easily through it is called a. an insulator b. a conductor c. a current 12.) a material that blocks the movement of heat is called a. an insulator b. a conductor c. a current directions: record whether each object below is a conductor or an insulator. 13.) winter coat ____________ 17.) rubber tire __________ 14.) steel nail __________ 18.) iron pan __________ 15.) copper coin __________ 19.) plastic jug __________ 16.) wood block __________ 20.) metal spoon ____________

Explanation:

• Question 8: Heat transfer from a camp - fire to a person standing close is through electromagnetic waves, which is radiation.
• Question 9: When frying an egg on a hot pan, heat is transferred from the pan to the egg through direct contact, which is conduction.
• Question 10: The circular movement of "lava" in a lava lamp is due to density differences caused by heating and cooling, which is convection.
• Question 11: A material that allows heat to move easily is called a conductor.
• Question 12: A material that blocks the movement of heat is an insulator.
• Question 13 - 20: Winter coat, rubber tire, wood block, and plastic jug are insulators as they prevent heat transfer well. Steel nail, copper coin, iron pan, and metal spoon are conductors as they allow heat to pass through easily.

Answer:

1. A. radiation
2. B. conduction
3. C. convection
4. B. a conductor
5. A. an insulator
6. insulator
7. conductor
8. conductor
9. insulator
10. insulator
11. conductor
12. insulator
13. conductor