What form of energy are produced when a phone rings?

Which form of energy travels through empty space and in all directions?

You are listening to your favorite music in your cellphone. Which form of energy is present?

Sun is the main source of energy on Earth. The energy transfers in space through radiation. What are the forms of energy present?

Solar panels do not make use of costly fuel and make no noise or pollution. Which energy does it get from the sun?

As solar panels get enough energy from the sun, which form of energy does it produce?

Our body is considered as a heat engine. Which situation uses heat energy in our body?

Which of the following uses electrical, heat, and sound energy in order to work?

Which energy causes us to perspire during summer days?

We use headphones when we are talking to someone in a cellphone. What are the forms of energy present in headphones? Single out