space
what is vision
Detection of light
what is the retina
where images are formed.
what is lgiht reflection
when waves encounter a surface that does not absorb its energy
what is the law of reflection
Angle of incidence equals angle of reflection.
what is light refraction
Bending of light
what is visibke lifht
colors composing white light.
what is the optical system
system forming images on the retina.
what is astronomy
Study of space
what can you ibserve in the night sky
stars
what are the sun and planets
Central star and celestial bodies orbiting it.
how is the earth structure
mantle
what are the forces on earth
Tectonic forces shaping the Earth's surface.
what is a natural satalite
Orbits the Earth.
what are artifical satelites
Orbit Earth for various purposes.
what are soace missions
Exploring outer space for scientific research.