astronomy Flashcards
1
Q
Astronomy
A
The study ao the universe.
2
Q
Year
A
The time required for the Earth to orbit once around the sun.
3
Q
Month
A
A division of the year that is based on the orbit of the moon around the Earth
4
Q
Day
A
The time required for earth to rotate once on it’s axis.
5
Q
Telescope
A
An instrument that collects electromagnetic radiation from the sky and concentrates it for better observation.
6
Q
Refracting Telescope
A
A telescope that uses a set of lenses to gather and focus light from distant objects.
7
Q
Reflecting Telescope
A
A telescope that uses a curved mirror to gather and focus light from distant objects.
8
Q
Electromagnetic Spectrum
A
All of the frequencies or wavelengths of electrom agnetic radiation.
