1. Slow it down: This is the most common effect of friction. Friction acts as an opposing force to the motion, causing the object to lose energy and slow down. This is why objects eventually stop moving when you stop pushing them.

2. Change its direction: Friction can also change the direction of a moving object. This is particularly evident in cases like a car turning, where friction between the tires and the road provides the force needed to change direction.

3. Generate heat: Friction can cause the object to heat up. This is why rubbing your hands together makes them warmer, and it's why brakes get hot when you apply them to a car.

4. Wear down the object: Friction can cause the object to wear down over time. This is why tires eventually wear out and why metal parts can become scratched or damaged.

5. Create sound: Sometimes, friction can also create sound. This is why you hear the screech of brakes or the rustling of leaves as they move against each other.

In summary: Friction is a force that opposes motion and can have a significant impact on the movement of an object. It can slow it down, change its direction, generate heat, wear it down, and even create sound.