Science Unit 6 Study Guide

What is Friction?

A force that slows down objects when surfaces rub together.

How does friction affect your edible car project?

It influences wheel movement and axle performance.

How to reduce unwanted friction in your car?

Use smooth materials, ensure axles are straight, and avoid unnecessary contact.

What role does grip play in car wheel performance?

Wheels need the right amount of grip to roll instead of sliding on the surface.

What is a force?

A push or pull that can make something move, stop, or change direction.

How are balanced forces characterized?

When forces are equal, resulting in no movement or constant speed.

What happens with unbalanced forces?

The object either speeds up, slows down, or changes direction.

What is Newton’s First Law of Inertia?

Objects stay still or keep moving the same way unless a force changes their motion.

What is air resistance?

A type of friction from air that slows things down.

What is velocity?

How fast something moves in a certain direction.

What is acceleration?

How quickly velocity changes, either by speeding up or slowing down.

What does a downward slope on a speed-time graph indicate?

It means that the object is slowing down.

Why is ice considered very slippery?

It has low friction, making it very slippery.

What is the effect of lubricants on friction?

They reduce friction to allow for smoother movement.

What would happen without friction?

Objects would keep moving without slowing down.