Question

apply: work individually
how will the heat flow in the following cases:

1. a book from the cold room is brought outside under the sun.
2. a hot cup of tea is placed on a table.
3. a refrigerator door is kept open for a while.
4. object a (25°c) and object b (25°c) are kept side by side.
5. between the core and the mantle.

Explanation:

1. Heat flows from the sun (hotter) to the book (colder).
2. Heat flows from the hot tea (hotter) to the table (colder).
3. Heat flows from the room (hotter) into the refrigerator (colder).
4. No heat flow as both objects are at the same temperature.
5. Heat flows from the core (hotter) to the mantle (colder).

Answer:

1. From the sun to the book.
2. From the tea to the table.
3. From the room to the refrigerator.
4. No heat flow.
5. From the core to the mantle.