A tea kettle is a container used for boiling water, primarily for making tea. It is typically made of materials like stainless steel, glass, or ceramic and features a spout for pouring. Many tea kettles come with a handle for easy lifting and a lid to keep the heat in while the water boils. Some tea kettles are designed for use on a stovetop, while others are electric and can heat water quickly. The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit), which is essential for brewing different types of tea, such as green tea or black tea.