Patterns in Motion & Friction Review

What is an example of a low-friction surface?

• Sandpaper

• Ice

• Concrete

• Grass

What is a balanced force?

• Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

• Balanced forces are unequal in size and act in the same direction, causing acceleration.

• Balanced forces are forces that do not act on an object, resulting in no motion.

• Balanced forces are forces that are always in motion, regardless of their size.

What is the effect of blowing on a rolling ball?

• It will speed the ball up.

• It will keep the ball rolling at the same speed.

• Blowing on the ball will slow it down.

• It will make the ball change direction.

What is the effect of gravity on motion?

• Gravity has no effect on motion.

• Gravity pulls objects toward the Earth, affecting how they move.

• Gravity only affects objects in space.

• Gravity makes objects move faster in a straight line.

How can you increase friction?

• By using smoother surfaces

• By using rougher surfaces

• By reducing the weight of the objects in contact

• By increasing the distance between the objects

What is the role of mass in motion?

• Mass determines the speed of an object in motion.

• Mass affects how much force is needed to move an object and how it responds to forces.

• Mass has no effect on the motion of an object.

• Mass only influences the direction of motion.

What is the relationship between force and motion?

• A force applied to an object can cause it to start moving, stop moving, or change direction.

• Force is only necessary to start motion, not to stop it.

• Motion occurs without any force acting on an object.

• Force and motion are unrelated concepts.

What is friction?

• A force that accelerates an object when it moves against another surface.

• A force that opposes the motion of an object when it rubs against another surface.

• A type of energy that is generated when two surfaces touch.

• A force that increases the speed of an object in motion.

How can two students balance a seesaw?

• They can each sit at the same distance from the center of the seesaw.

• One student can sit at the end while the other sits in the middle.

• They can both jump at the same time to create balance.

• One student can hold weights to balance the seesaw.

Which materials create a lot of friction?

• Silk and satin

• Wood and plastic

• Carpet and sandpaper

• Glass and metal