Card Set Information
prism vibration simple machines
science flash cards for chapter 12
the measure of how much useful work a machine puts out compared to the amount of work put into it.
the number of times a sound source vibrates in one second.
a material that transfers heat well
the transfer of heat through space
the ability to do work
when light strikes a surface and bounces off
when a force is used to move an object a certain distance
the highness or lowness of sound
a material that does not transfer heat very well
the object being lifted or moved by a simple machine
the bending of light as it passes from one material to another
the distance an object moves in a certain amount of time
a range of light waves with different wavelengths and energies
the force that works against motion between surfaces that touch
the energy in a sound wave
words such as above and below, left and right, and north and south give clues about…
Name 4 simple machines
wheel and axle, wedge, pulley, inclined plane, lever
A rock rolling down a hill has…
Sources of heat such a coal, oil, and natural gas
Lenses are tools that _______ light.
Frequency (the number of times a sound source vibrates in one second) determines…
Sound carries ______ because energy is needed to start an object vibrating to make a sound.
The opposite of an insulator
A range of all light waves with varying wavelengths.
A push or pull that makes a object start moving, stop moving , speed up, slow down, or change directions
The principal of Newtonian physics that describes the tendency of an object to stay at rest or to stay in motion.
Energy of motion is also called...
A wheel with teeth
A flat slanted surface
How much force you use to move something
Two inclined planes back to back
A machine made up of two or more simple machines
A inclined plane twisted around a spiral
A simple machine that is not attached to anything, but it increases the force to move an object, but it does not change the direction of the force.
A movable pulley
A bar that can turn or pivot on a fixed point called the fulcrum.
A simple machine that you might use to move a heavy box into a truck.
Two things you can save by using tools.
Time and energy
The transfer of energy by the flow of liquids and gases
The transfer of energy when one particle bumps into another.
The distance from the top of one wave to the top of the next wave.
Any smooth, shiny object that reflects almost all the light that falls on it.
Light waves with a shorter wavelength differ from those with a longer wavelength because they have...
White light can be separated into colors that make it up by passing it through a...
A back-and-forth movement
An area of crowded particles followed by an area of widely spaced particles.
If you tighten or loosen guitar strings you are adjusting the pitch of the sound by changing the...
frequency of the sound waves
What simple machines would help to load objects onto a truck if they are too heavy to lift.
A wheel and axle and a ramp.