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Electrical method
________- forms a temporary magnet, wrap the steel bar with a solenoid.
Kinetic energy
________ which strikes the ground, is lost as heat and sound.
Transverse
________ Waves- transmit energy by motion at right angles to or across the direction in which the energy is moving.
Ultrasound
________- sound waves with a frequency higher than human audibility (20, 000Hz)
Infrasound
________- sound waves with a frequency below human audibility (20Hz)
X rays
________ pass easily through flesh but not through bone.
Electromagnetic induction
________ then occurs in the coil producing the alternative voltage.
opposite reaction
Every action has an equal and ________.
Potential energy
________= weight x change in height.
Specific heat capacity
________= (energy)/mass x temperature.
constant magnetic field
It deflects a pointer in response to an electric current flowing through a coil in a s= ________.
Ray
Reflected ________- light ________ which bounces off the mirror.
longitudinal wave
Sound is a(n) ________.
Lift/Upthrust reaction/normal
upward force
Drag/friction
backward force
thrust
forward force
weight
gravitational force
Mass
Scalar
Weight
Vector
Longitudinal Waves
transmit energy in the same direction as the wave
Transverse Waves
transmit energy by motion at right angles to or across the direction in which the energy is moving
The Normal
the perpendicular to the mirror at the point where the incident ray strikes it
Incident Ray
light ray which hits the mirror
Reflected Ray
light ray which bounces off the mirror
Angle of incidence (i)
the angle between the incident ray and the normal
Angle of reflection (r)
the angle between the reflected ray and the normal
By stroking
stroking an un-magnetized material in one direction only, with a magnet, lines up each domain, so that they are all ‘pointing in the same direction
Magnetic Induction
a magnetic pole induces an unlike pole near it and a like pole away from it
Electrical method
forms a temporary magnet, wrap the steel bar with a solenoid
Infrasound
sound waves with a frequency below human audibility (20Hz)
Ultrasound
sound waves with a frequency higher than human audibility (20,000Hz)
Note 
Flashcard (30)