Friction also generates heat, resulting in the wastage of a lot of energy in the form of ______

Options

A. heat
B. electricity
C. energy
D. light

Answer

To solve the question, we need to identify the form of energy that is wasted due to friction. Here’s a step-by-step breakdown:

### Step 1: Understand the concept of friction
Friction is the resistance that one surface or object encounters when moving over another. It is a force that opposes motion.

### Step 2: Identify the effects of friction
When two surfaces rub against each other, friction causes several effects. One of the primary effects is the generation of heat.

### Step 3: Recognize the energy transformation
As objects move and experience friction, the kinetic energy (the energy of motion) is transformed into thermal energy (heat). This transformation is a result of the frictional force acting between the surfaces.

### Step 4: Determine the form of energy wasted
The question specifically asks for the form of energy that is wasted due to friction. While friction can also produce sound and a small amount of light, the major portion of energy lost is in the form of heat.

### Step 5: Conclude the answer
Therefore, the correct answer to the question is that friction generates heat, resulting in the wastage of a lot of energy in the form of **heat**.

### Final Answer:
Friction also generates heat, resulting in the wastage of a lot of energy in the form of **heat**.

---