Viewing the universe
Describe the volcabulay
What is Astronomy
Studies celestial bodies and the universe as a whole.
Objective
Identify the visible and nonvisible parts of the electromagnet spectrum.
Compare refracting telescopes and reflecting telescopes.
Explain how telescopes for nonvisible electromagnetic radiation differ from light telescopes.
Astronomy Vocabulary
Light year
Light years are used outside the solar system and its approximately 9.46 trillion kilometers.
Galaxy
A collection of of stars, dust, and gasbound together by gravity.
Asronomical Unit
The average distance between the earth and the sun; approximately 150 million kilometers (symbol A.U).
Electromagnetic spectrum
All of the frequence or wavelength if electromagnetic radiation.
Refracting telescopes
A refracting telescope is a telescope that uses a set of lense to gather and focused light from distant objects.
refracting telescopes
The reflecting telescope uses a curved mirror to gather and focuses light from distant objects.