In nature, clouds are the tangible result of the huge water cycle on the earth. The sun shines on the surface of the earth, and water evaporates to form water vapor. Once the water vapor is supersaturated, water molecules will gather around the dust in the air, and the generated water droplets or ice crystals will scatter sunlight in all directions, thus creating the appearance of clouds. Clouds can form various shapes, and they are also divided into many kinds because of their different heights and shapes in the sky.
The cloud can provide services and resources for human beings in the following ways:
1. Cloud service: Cloud service is a service that provides computing resources and data storage through the Internet. Users can connect to remote data centers through the network to meet their computing and storage needs without installing and maintaining software and hardware locally. Cloud service providers divide physical resources into multiple virtual resources, and each virtual resource can be assigned to different users independently, and users can choose different virtual resources according to their own needs.
2. Cloud storage: Cloud storage is a service that provides data storage through the Internet. Users can store data in remote data centers so that they can access and use them anytime and anywhere. Cloud storage has strong scalability, which can easily increase storage space and backup data, and also realize data redundancy and disaster tolerance.
3. Cloud computing: Cloud computing is a service that provides computing resources and data storage through the Internet. It can realize the dynamic allocation and management of computing resources, and automatically adjust the quantity and scale of computing resources and services according to the needs of users. Cloud computing can greatly improve the computational efficiency, but also reduce the cost and maintenance difficulty.
4. Cloud education: Cloud education is an online education service based on cloud computing and big data technology. It can integrate educational resources and learning services into a cloud platform, which is convenient for students and teachers to use. Cloud education can greatly improve the utilization efficiency of educational resources and promote the fairness and popularization of education.
5. Cloud security: Cloud security is a network security service based on cloud computing and big data technology. It can build a security defense system in the cloud to protect users' data and applications from network attacks and threats. Cloud security can greatly improve the ability and efficiency of network security protection, but also reduce the security cost and maintenance difficulty.
The role of clouds
1. Clouds can reflect sunlight, thus reducing ultraviolet radiation on the earth's surface and protecting humans, animals and plants from radiation damage. Clouds can regulate the temperature of the earth. Cumulus clouds in winter can prevent the loss of heat on the earth's surface. In summer, if there are no clouds, the ground temperature will rise even higher. Clouds can produce precipitation and provide water for life on earth. Water droplets in the cloud collide with ice crystals and condense into rainwater, which falls on the ground to form rivers, lakes and other water bodies.
2. Clouds can protect the earth's surface from the impact of asteroids and other celestial bodies, because water droplets and ice crystals in the clouds will be adsorbed on their surfaces, slowing them down and eventually falling into the earth's atmosphere. Clouds can also provide many services and resources for human beings. For example, clouds can be used to generate electricity, provide water resources and create rainfall. At the same time, the cloud can also provide scientists with many meteorological and atmospheric science data.