Question

1 ms hugon’s science team is traveling on school buses from their competition. some of the students place their hands on the cool window and feel the difference in thermal energy between their hands and the glass. when they are touching the glass, what type of heat transfer are they experiencing? a insulation b radiation c convection d conduction 2 a bunsen burner is used to heat a substance in a glass beaker, as shown in the diagram. what type of energy transfer is occurring in area 3? a convection b conduction c radiation d insulation

Explanation:

1. For question 1: Heat transfer through direct physical contact between two objects (hands and glass) is conduction. Insulation prevents heat transfer, radiation is transfer via electromagnetic waves, and convection is transfer via fluid movement.
2. For question 2: Area 3 is the space between the Bunsen burner and the stand; heat is transferred through this empty space via electromagnetic waves, which is radiation. Conduction needs direct contact, convection needs fluid movement, and insulation prevents transfer.

Answer:

1. D. Conduction
2. C. Radiation