Motion
The rate at which an object moves
What is speed?
The force that pulls objects towards the Earth
What is gravity?
True or False: The Earth is not a magnet
What is FALSE?
A seesaw is an example of this type of simple machine
What is a lever?
True or False: Sound waves travel faster in gases.
What is FALSE?
The study of motion
What is mechanics?
This force has to do with both magnetism and electricity
force = mass x acceleration (f= m x a)What is electromagnetic force?
Any object that attracts or repels certain metals
What is a magnet?
A simple machine is a device that either __________ or ___________ force.
What are multiplies and redirects?
When something travels faster than the speed of sound (767 mph), we can say that it is moving at this speed.
What is supersonic?
The speed of an object in a given direction
What is velocity?
This math sentence represents Newton's 2nd Law of Motion
force = mass x acceleration (f= m x a)
Tiny magnets that make up larger magnets
What are domains?
These 2 simple machines look almost exactly the same but are used differently.
What are the inclined plans and the wedge?
The high spots on the wave are called this
What are crests (or peaks)?
An object in motion (or at rest) will stay in motion (or at rest) unless acted upon by an outside force.
What is Newton's First Law of Motion?
A closed path through which electric current flows
What is an electric circuit?
Domains are _________ when their south poles are pointed in the same direction and the north poles are pointed in the opposite direction.
What is aligned?
You bought a new couch. You may want to use this machine to help move it into your apartment because you live on the 8th floor of a building that has no elevators.
What is a pulley?
The amount of times a sound wave occurs in a given amount of time is called this
What is frequency?
A fixed object or location used to describe the position and motion of another object.
What is a reference point?
Newton's 3rd Law
What is for "for every action, there is an equal and opposite reaction"?
Nearly anything with electrons can form a __________
___________.
What is magnetic field?
The vertical distance between the threads of a screw is called this
What is the pitch?
This word means to decrease the intensity of something.
What is dampen (or dampening)?