S1 Light and Astrobiology Flashcards
What is refraction?
The bending of light
What happens to rays of light when they travel through a CONVex lens?
They CONVerge to a focus point
What happens to rays of light when they travel through a concave lens?
They diverge (spread apart)
What is the name of the family of waves that visible light is a part of?
The electromagnetic spectrum (EM spectrum for short)
What is the name of the object we use to split white light up into a rainbow?
A triangular prism
What are all the memebers of the EM spectrum?
Radiowaves
Microwaves
Infrared
Visible light
Ultraviolet
X-rays
Gamma rays
What is the name for a planet that orbits around a star that isn’t our sun?
Exoplanet
What is the ‘habitable zone’ around a star?
The region around a star at which liquid water could exist on the surface of an orbiting planet.
What are 4 conditions that need to be just right for life to exist?
Water
Oxygen
Temperature
Atmosphere
What is the name of the part of the eye which protects the eye?
Sclera
What is the name of the muscle that controls how much light enters the eye?
Iris
Which part of the eye allows light to enter?
Pupil
Which part of the eye detects light?
Retina
Which part of the eye focuses light?
Lens
Which part of the eye sends signals to the brain?
Optic nerve
