7. The type of energy that is carried by electromagnetic waves is called a) chemical b) electrical c) mechanical d) radiant d) nuclear 8. The flow of energy from the __ supports all life on Earth. 9. What does"doing work" mean when it comes to physics?

## Step1<br />For question 7, we need to identify the type of energy carried by electromagnetic waves. Electromagnetic waves, which include light, radio waves, and X-rays, carry energy that is not dependent on any medium. This energy is referred to as radiant energy.<br /><br />## Step2<br />For question 8, we need to identify the source of energy that supports all life on Earth. The Sun is the primary source of energy for all life on Earth. It provides the light and heat necessary for life to exist.<br /><br />## Step3<br />For question 9, we need to define what "doing work" means in the context of physics. In physics, "doing work" refers to the process of moving an object by applying a force to it. This force must be applied in the same direction as the object's movement. The amount of work done is calculated by multiplying the force applied by the distance the object moves.