To determine which setup best demonstrates how energy spreads from a source, let's analyze each option in detail.
### Option A:
```
Mirror Thermometer
| |
Candle Thermometer
| |
Mirror
```
- In this setup, we have a candle and two thermometers with mirrors placed around them.
- The mirrors might reflect the energy, but this setup doesn't clearly indicate how energy is spreading from the candle to the thermometers.
### Option B:
```
Candle Thermometer
Thermometer
Thermometer
```
- This setup involves a candle as the energy source and multiple thermometers placed at different distances from the candle.
- This arrangement is ideal for observing how the temperature changes (a measure of energy from the heat source) as the distance from the candle increases.
- This clearly shows the spreading of energy from a single point source.
### Option C:
```
Thermometer Flashlight
```
- This setup includes a flashlight and a single thermometer without additional information on the distances or placements.
- This doesn't provide a detailed view of how energy spreads or changes with distance.
### Option D:
```
Mirror Flashlight
| |
Mirror Mirror
```
- This setup consists of a flashlight and several mirrors but no thermometers to measure the energy.
- This setup might reflect the light but doesn't show the spread of energy effectively.
### Analysis:
The best setup to show how energy spreads from a source should allow for measuring energy distribution at various distances from that source.
### Conclusion:
Option B is the most appropriate setup for demonstrating how energy spreads from a heat source (the candle) using multiple thermometers positioned at different distances.
So, the correct answer is Option B.
