everything that exists

device that collecrs light

bending waves that go from one substance to another

bouncing of waves off a surface

is the measured in meters

measured in cycles per second or hertz

different ranges of wavelength

complete spine on the axis in 24 hrs

one hour difference in time zones

located on 180 degree longitude

One complete trip

The shape or lighten part of the moon

Blocking view of the moon

blocking view of the moon because of the sun

regular rise and fall of the water level

Colby Bailey