Answer:1.C2.D3.A4.B5.B6.A7.A8.B9.A10.B11.D12.C13.B14.B15.C16.A
1. Charcoal - When heated, charcoal burns and produces heat. It is often used for cooking, grilling, or providing warmth.2. Sun - The sun is a giant source of heat. It radiates heat and light, which warms the Earth and provides energy for plants and other living things.3. Oven - An oven is a kitchen appliance that uses heat to cook food. It can bake, roast, or broil food at controlled temperatures.4. Hair iron - A hair iron, also known as a flat iron or curling iron, uses heat to style hair. It can straighten, curl, or add waves to hair.5. Electric kettle - An electric kettle uses heat to boil water. It has a heating element that heats the water until it reaches its boiling point.