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Learning Set 4 (Part Two)

Across
Cells responsible for vision in dim light
Circular opening in center of eye that controls amount of light that enters the eye
Change in direction of a wave when it enters a new medium with a different wave speed
Opening between middle and inner ear
First bone in middle ear
Nerve that carry signals from eye to brain
Layer at back of eye with cells that respond to light and color
Connects inner ear with brain and carries impulses
Radiant energy that can travel through a vacuum or matter in the form of waves
Layer of tissue that acts as a covering, connection, or lining
Flat, colored, ring-shaped membrane in eye
Instrument used to detect and record seismic waves
Caused by an earthquake or vibrations inside Earth
Down
Ability of a wave to spread out or change direction as it passes through an opening or around an obstruction
Structure that changes shape to focus light and images on retina
Continuous range of wavelengths that includes all types of electromagnetic waves
Turn back from a hard surface
When medium and energy in a wave is turned back from a hard surface
Tiny particle or packet of light energy
Membrane that separates outer ear from middle ear
Region in a longitudinal wave where particles of the medium have highest density
Second bone in middle ear
Third small bone in middle ear
Distance a wave travels in a given period of time
Bounce off or deflect in different directions
Time required to complete one cycle of a wave