Investigation 2 vocabulary

The force that two surfaces put on each other when they rub against each other, slowing them down.

• Friction

• Gravity

• Force

• Newton

a motion's consistent and repeating behaviors

• Friction

• Pattern of motion

• Gravity

• Force

any inclined surface

• Friction

• Wheel

• Ramp

• Axle

the steepness of a surface

• Slope

• Ramp

• Gravity

• Friciton

two or more objects that work together in a meaningful way

• Friction

• Axle

• System

• Wheel

a circular object rotating on an axle

• Cup

• Friction

• Axle

• Wheel

A bar or shaft on which a wheel or wheels turn

• Gravity

• Friciton

• Cup

• Axle

a long, thin bar (in a wheel-and-axle)

• Friction

• Shaft

• Wheel

• Gravity

a simple machine made of a wheel fixed to a shaft, or axle; both the wheel and axle rotate together.

• Gravity

• Ramp

• Wheel-and-axle system

• Cup

A curved line...

• Turns to one side

• Goes straight down

• Zig zags

• Does not move