The sun is creating heat because of the radiant energy
I'm heating up coal
Radiant energy can transform into thermal energy because radiant energy can travel through the waves, so this picture shows that the suns rays create heat, which is thermal.
Chemical energy can be converted to thermal energy. When you use coal, you heat it up right? This means that the atoms and molecules begin to move faster and create more heat.
This is a nuclear power plant (they didn't have something that looked like one)
Electrical energy can be transformed into mechanical energy using a car because electricity is used to start up the car, then mechanical energy is used because the car will move.
Electrical energy can turn into thermal energy. When you get shocked by electricity, you may feel burn and heat. Electricity burns happen when you touch electrically live objects.
Nuclear energy can convert to thermal energy. In a nuclear power plant, the nuclear energy splits uranium atoms, also called fission. This process makes heat to produce steam. A turbine generator generates electricity so the thermal energy converts to electrical energy.
Electrical energy can be transformed into sound energy. When we use our phones, there are electromagnetic waves inside and is transferred into the air and creates vibration waves to create sound.