Observe the given picture and answer the following questions:

The picture compares a built-up urban area with a nearby rural area. The urban side contains buildings, concrete surfaces and asphalt roads, while the rural side contains trees, vegetation and natural surfaces. Use the observations from the picture and your understanding of the Urban Heat Island effect.
1. Which area is expected to have a higher temperature? -
2. Why is the rural side likely to remain relatively cooler? -
3. Suppose the picture represents conditions during the afternoon. What happens to the concrete and asphalt in the urban area? -
4. The city shown in the picture experiences very high temperatures during summer. What effect could this have on energy demand? -