Section 1 Notes (we've gone over the answers in class!!!!)

Light from the past: The light that we see now left the ____________many _____________ of years ago.

The light and other energy leaving a star forms  _____________________________.

_______________________ is energy that is transmitted from one _________________ to another by ___________________________________ waves.

_________________________________-because of the electric and _____________________ properties of this radiation, it’s called electromagnetic radiation-  this type of radiation carries ______________________ through empty space and ________________________.

Examples: (Fig. 1, pg. 320 and 321) radio waves, visible light, gamma rays, x-rays, __________________________________ waves, infrared waves, _______________________

_____________________-appears when white light passes through a prism.

_________________  _________________-mechanical waves that can’t travel through empty space.

Electromagnetic  ___________________________ -arrangement of electromagnetic radiation.

Theses waves vary in __________________________-which is the number of times a wave __________________________ per unit of time measured.

The ________________ the wavelength, the more __________________________ occur.

One tool for studying electromagnetic radiation from distant sources is a ______________________________.

Optical Telescopes:

____________________________ telescope-uses convex lenses, which are curved outward like the surface of a ______________.

___________________________telescope- uses a curved __________________ to direct light to a focal point where it forms an ______________________.

____________________________-optical telescopes used by professional astronomers are housed here in ________________shaped roofs that can be opened up for viewing.

___________________ optics-computer corrects for changes in ______________________, mirror distortions, and bad viewing conditions.

_______________________optics-uses a laser to probe the atmosphere and relay information to a _______________________ about air turbulence.

______________________ telescope-used to study radio waves _______________________ through space.