Friday, December 13, 2013 Text Size    Parent Category:
Educational   flash_light_md_blk
hard_hat_yellow_light_on_off_md_blk lava_lamp_blue_md_blk
light_bulb_md_blk moth_attracted_to_light_md_blk
multiple_cfl_lights_turn_on_md_blktraffic_light_green_md_blk
stagelights_flashing_yellow_md_blk 1.  Light is the name for a
range of electromagnetic radiation that can  it is also referred
to as electromagnetic radiation.  2.  Light is a beam of energy
that moves in a wave.  3.  A light wave consists of energy in
the form of electric and magnetic fields. and at right angles to
each other.  4.  Light waves come in many sizes. The size of the
wave,  the distance between two wave peaks, is called a
wavelength.  5.  The wavelengths of the light that most people
can see ranges from 400 to 700  billionths of a meter.  6.  The
human eye needs light to see.  7.  Light travels very fast and
in a straight line, until something bends it. The straight waves
of light are called light rays.  8.  Light travels at about
186,000 mile