Light
What is the order of the sections of EM radiation?
gamma, x ray, uv light, visible, infrared, microwave, radio
Which light has the highest frequency?
Gamma
The purpose of the eye-piece
to magnify the image
Who invented the reflecting telescope
Isaac Newton
Do radio waves have high or low energy?
Low
What is the order of the visible spectrum?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
Which light has the lowest frequency
Radio
What is the purpose of the objective lens?
to collect as much light as possible
In general, where is the best location on Earth for a telescope to be built?
On mountains far away from city or lights
What is a light year?
distance light travels in one year
Compared to blue light, green light has a __________ frequency
lower
What is the unit of wavelength?
Meters
What type of telescope were the earliest telescopes used by astronomers?
Refracting Telescope
Who is credited for inventing the first Refracting telescope?
Hans Lippershey
Apparent shift in position of an object when viewed from different angles
What is parallax?
How do human eyes discern wavelengths of visible light?
As color
What is the unit of frequency?
Hertz
Who was the first person who regularly used a telescope for astronomical observations?
Galileo
What limitations does the atmosphere impose on the usefulness of telescopes?
It creates blurry images
A star that is far from Earth will have a ___________ parallax than a star that is close to Earth
lesser
Compared to microwaves, infrared light as a _____________ wavelength
shorter
At what speed does EM radiation travel?
Speed of light
Which type of telescope uses mirrors to create an image?
Reflecting
What advantage do reflecting telescopes have over refracting telescopes?
No chromatic aberration
What is the Astronomical Unit?
Sun - Earth Distance