What is the cause of sparks from a titanium golf club head when it touches the grass?

Question

What is the cause of sparks from a titanium golf club head when it touches the grass?

Answer 1

small rocks from the grass and the sand put on divots

Answer 2

Small rocks and sand in the grass. At Wente in livermore, you can't use titanium clubs out of the fescue during the summer. It has started fires./

Answer 3

static electricity

Answer 4

sure theres no rocks in the grass?

Answer 5

That would be from the sand that they use to fill divots with.

Answer 6

friction...between the metal on the clubhead and the sand in the ground.