1
science
the SI unit for force
Newton
when you use a flag pole, you are using what kind of simple machine
fixed pulley
interference
the electromagnetic wave that includes saunas, satellites, remote control, and warmth of fire
infrared
physical science is the study of
matter and energy
when an object changes position over time
motion
the fixed point that a lever pivots around
fulcrum
an electric current will always follow
the path of least resistance
shows the entire range of electromagnetic frequencies
electromagnetic spectrum
a possible explanation for a set of observations or answer to a specific question
hypothesis
tendency of an object to resist change in motion
inertia
velocity is the
speed and direction of an object
build up of charges on an obejct
static electricity
the specific frequency used for a radio broadcast
carrier wave
Write 99 in scientific notation
9.9 x 101
a graph of speed vs time with a straight line shows
a constant acceleration
an inclined plane wrapped around a cylinder
screw
type of current produced by a battery
direct current
the strength of the force between magnets depends on the _ between them
distance
a standard for comparison
control
energy is measured in units called
joules
a compressed spring has ________ energy
elastic potential
List the waves of the electromagnetic spectrum from lowest frequency to highest.
radio, microwave, infrared, visible light, ultraviolet, x rays, gamma rays
what is GPS and how does it transmit radio signals?
Global Positioning system: System of satellites, ground stations and receivers that receive high frequency microwave signals, amplify it and return it to Earth.