While working on some home repairs with his uncle, a student helps cut the wood. After the cut is made, she blows off the dust and feels the heat coming up from the wood onto her face. She also smells a slight burning smell. The student asks her uncle, "why did it get so hot?" and her uncle responds with one word: friction. Explain why the blade and wood became so hot while cutting. In your response, be sure to include:

1. A definition of friction.

2. How friction changes the temperature of substances.

3. How the width of the blade and depth of the cut would affect the amount of heat produced and why.

Be sure to consider the completeness of your response, supporting details, and accurate use of terms.