Bill Nye - Simple Machines Flashcard

Front

What is a pulley?

Back

A pulley is a simple machine that uses a wheel and a rope to lift heavy objects.

Front

What does a screw do?

Back

A screw converts rotational motion into linear motion, allowing it to hold objects together or lift them.

Front

What are gears?

Back

Gears are wheels with teeth that interlock to transmit motion and force.

Front

How does a pulley system reduce the amount of force needed to lift a load?

Back

A pulley system allows you to use more rope (distance), which reduces the amount of force needed to lift the load.

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called a fulcrum.

Front

What is the function of a fulcrum in a lever?

Back

The fulcrum is the pivot point that allows the lever to lift or move a load.

Front

What is a wheel?

Back

A wheel is a circular object that rotates around an axle, allowing for easier movement of loads.

Front

What is the relationship between a ramp and a screw?

Back

A screw can be thought of as a ramp wrapped around a rod, allowing for lifting or holding objects.

Front

What is work in the context of simple machines?

Back

Work is the effort applied to move an object over a distance.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.