Simple Machines
The purpose of all simple machines is to make work easier by reducing this
What is the amount of effort and force used (or just effort/force)?
The fundamental law of stating energy cannot be created or destroyed, only changed in form
What is the law of conservation of energy?
This type of energy is based on an object's motion.
What is kinetic energy?
This type of kinetic energy is caused by vibrating molecules and affects temperature.
What is thermal energy?
The two energy forms released when a cow eats grass.
What are Thermal and Kinetic energy?
This is a simple machine that is a rigid bar or plank with a pivot point known as the fulcrum
What is a lever?
This property of energy stays the same even as energy is converted into different forms.
What is the amount of energy?
This is the kind of energy a ball has when it reaches the top of a hill and is momentarily stopped due to its position.
What is potential energy?
Energy stored in a stretched rubber band or a pulled back bow.
What is Elastic Energy?
In a radio powered by batteries, chemical energy immediately changes to this, before becoming sound.
What is Electrical Energy?
An inclined plane that is movable, like an axe, knife, or doorstop
What is a wedge?
This is the term for the movement of energy between different stages.
What is an energy transfer?
When a moving object slows down and stops, its kinetic energy is transferred into this other type of energy, relative to its new position.
What is potential energy?
The type of potential energy that a skydiver possesses due to their height above the Earth's surface.
What is gravitational energy?
The four forms of energy created by turning on a light bulb, starting from the initial source (batteries or power grid).
What are Chemical, Electrical, Light, and Sound energy?
This class of lever has the fulcrum in the middle, between the load and the effort (e.g., a seesaw)
What is a first class lever?
This is what the Law of Conservation of Energy says can happen to energy, but it can never be destroyed.
What is change forms/transferred?
This is the energy conversion that happens when a ball rolls down a hill.
What is the conversion of potential energy to kinetic energy?
Energy stored in the nucleus of radioactive atoms.
What is nuclear energy?
The energy chain that starts with Electrical Energy and results in Light, Sound, and Thermal energy.
What is a TV Change (or TV being turned on)?
A wheelbarrow is an example of this class of lever because the load is in the middle and the fulcrum is to one side
What is a second class lever?
This is the action that allows us to release stored chemical energy from our bodies and convert it to mechanical energy.
What is movement?
The two factors that influence the amount of potential energy an object possesses.
What are force applied and the distance?
The transfer of energy via molecules bumping into each other to transmit waves.
What is sound energy?
The complete energy conversion chain that occurs in a TV when you turn it on.
What is Electrical to Sound to Light to Thermal energy?