Question

two solid blocks are heated to the temperatures shown. the blocks are placed so they touch.

1. which diagram correctly shows the direction heat will flow?

explain your answer.

two identical aquariums were next to an open window. one aquarium had a plastic cover on it, and the other was uncovered. this table shows how the temperature of each aquarium changed over 1.5 hours.

aquarium	initial temperature (°c)	final temperature (°c)
covered aquarium	23.4	17.3

1. during this time, thermal energy was transferred from ________ to ________.

(a) ...the surroundings to each aquarium.
(b) ...each aquarium to the surroundings.
explain your answer using evidence from the information provided.

Explanation:

Question 3 (assuming the blocks have different temperatures, e.g., one hotter, one colder)

Step1: Recall heat flow rule

Heat flows from higher temperature to lower temperature.

Step2: Analyze diagrams

Identify the diagram where arrows go from the hotter block to the colder block (e.g., if first block is 80°C, second 20°C, the correct diagram has heat from 80°C block to 20°C block).

The initial temp of aquariums is 23.4°C, final is 17.3°C (lower). Thermal energy flows from higher temp to lower. Since aquariums cooled, energy transferred from aquariums (higher temp) to surroundings (lower temp, as window is likely cooler). Option B says this.

Answer:

(Depends on diagram temperatures; e.g., if middle diagram shows heat from hotter to colder, "The Middle Graph")

Question 4