The key word in that question is "range" of temperatures. When it's cold, it gets really cold and when it's hot, it gets really
hot. In areas near large bodies of water, there is also water in the atmosphere, (know as "humidity"). There is a property of matter know as "specific heat". A substance with a high specific heat is hard to heat up but also hard to cool down. It is easier for a substance with a high specific heat to maintain a steady temperature. Water has a high specific heat. It is hard to heat it up and hard to cool it down So areas with a lot of water, including atmospheric humidity, are harder to get hot and harder to get cold. In areas where there is little humidity because they're far away from large bodies of water, it is easier to heat up the atmosphere and also easier to cool it off. So you have a larger range of temperatures. In the desert it is hot during the day and cold at night. In the rain forest, (where there is very high atmospheric humidity) it can be very hot during the day and stay hot at night.
Get it?
Temperature difference occurring in various terrains is due to terrain construction.
Explanation:
As it is rule of nature that every material is different in physical and chemical properties to others. Sand has very high absorption capability of gases and heat. As the day shines desert get hot because sand consisting of various materials mostly glass and silicon reflects the light and due to which humidity level decreases and day become hot. In night there is no light so internal vibrational momentum of atoms comes on its original pace it means that their drift decreases so night is cold.
Forests on other hand face humidity and sunlight in the day and in night humidity level does not considerably decreases and heat gets trapped which is absorbed in the day.
