1. Why does radioactive decay play a very important role in earth's internal heat? A. Radioactive element can be found anywhere in the planet. B. When radioactive element decays, it produces heat. C. Spontaneous nuclear disintegration of radioactive elements produced thermal energy. D. All of the above 2. How does the conduction in the surface of the earth affect the temperature of our atmosphere? A. Air molecules come in contact with the warmer surface of the land and ocean resulting to the in
Answer (1)
1. The correct answer is D. All of the above.Radioactive decay is very important in keeping the Earth warm inside. This is because radioactive elements are found in many places deep within the Earth. When these elements break down or decay, they release heat. This process, called spontaneous nuclear disintegration, gives off thermal energy or heat, which helps keep the inside of the Earth hot.2. The correct answer is A. Air molecules come in contact with the warmer surface of the land and ocean resulting to the increase in temperature.Conduction happens when the heat from the ground or ocean is passed directly to the air that touches it. When the sun heats the Earth's surface, the air near it also becomes warm because it touches the hot ground or water. This is how conduction helps warm the air in our atmosphere.
