The dome shaped house made of snow is called Igloo.

An Igloo is a traditional Inuit (Eskimo) dwelling made of snow blocks. These snow blocks are carefully cut and shaped to form a dome-shaped structure, providing excellent insulation against the cold weather outside.

Key Points:
- Igloos are primarily built in areas with heavy snowfall, such as the Arctic regions.
- The word "igloo" comes from the Inuit word "iglu," which means "house" or "shelter."
- Igloos are designed to withstand the extreme cold temperatures and harsh weather conditions of the Arctic.
- The unique dome shape of an igloo helps to distribute the weight of the snow evenly, making it structurally stable.
- The thick walls of the igloo provide insulation, trapping the warm air inside and keeping the cold air out.
- The entrance of an igloo is usually located at the bottom, which helps to prevent the cold air from entering directly into the living space.
- Inside the igloo, there is a central space called the "kitchen" where a small fire is lit for cooking and heating.
- The rest of the igloo is divided into separate sleeping compartments, providing privacy for each family member.
- Igloos are also equipped with small ventilation holes near the top to allow for air circulation and prevent the buildup of carbon dioxide.
- Traditional igloos are built using only snow and ice, but modern versions may include additional materials like wood or plastic for reinforcement.
- Igloos are well-suited for survival in the Arctic because they can be easily constructed using the available snow and provide an efficient shelter against the freezing temperatures.

Conclusion:
The term "igloo" refers to the dome-shaped house made of snow, primarily used by the Inuit people in the Arctic regions. These structures are designed to withstand extreme cold temperatures and provide insulation against the harsh weather conditions. Igloos are a remarkable example of human adaptation to the environment and have been used for centuries as efficient shelters in snow-covered areas.