Forces
What is the force that keeps us from floating away to space?
Gravity
In an energy flow diagram, energy either transfers or ______ to the next source
Transforms
A mechanical device that changes the direction or magnitude of a force is the definition of what?
A simple machine
In a force diagram, gravity is also known as F of _____
Earth
Energy is the ability to do ____
A complex contraption that is made to do a simple task is called a _____ _______ machine
Rube Goldberg
If I drop a tennis ball, what are 2 forces that could be acting on it?
Gravity, Air resistance, Wind
Name the 5 kinetic energy types
Kinetic, thermal (heat), electrical, electromagnetic (light), sound
If you combine at least 2 simple machines you get a what?
Complex machine
Force is required to do what
Move energy
Name the 4 potential energy types.
Gravitational, chemical, nuclear, elastic
Name the 6 simple machines
Pulley, lever, screw, inclined plane, wedge, wheel & axle
Friction is the force that opposes the relative motion of surfaces sliding or rolling against each other. What causes friction?
Microscopic bumps on surfaces catching on eachother
In an energy flow diagram the ultimate source is the ______
Sun
A lever is a simple machine that has a fixed hinge or ______
Fulcrum