test

Question 1

Optical telescope

Answer 1

picks up the longest waves on the electromagnetic spectrum

Question 2

Radio telescope

Answer 2

produces more clear images than similar telescopes on earth because of the lack of interference from our atmosphere.

Question 3

Interferometry

Answer 3

Optics. a device that separates a beam of light into two ray beams, usually by means of reflection, and that brings the rays together to produce interference, used to measure wavelength, index of refraction, and astronomical distances.

Question 4

Electromagnetic Radiation

Answer 4

radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Question 5

Hubble Telescope

Answer 5

a telescope launched into orbit around the earth in 1990 to provide information about the universe in the visible, infrared, and ultraviolet rangesAlso called: Hubble space telescope

Question 6

Refracting telescope

Answer 6

a telescope which uses a converging lens to collect the light.

Question 7

Reflecting telescope

Answer 7

a telescope in which a mirror is used to collect and focus light.

Question 8

Solar Eclipse

Answer 8

an eclipse in which the sun is obscured by the moon.

Question 9

Lunar Eclipse

Answer 9

an eclipse in which the moon appears darkened as it passes into the earth’s shadow.

Question 10

Red Shift

Answer 10

the displacement of spectral lines toward longer wavelengths (the red end of the spectrum) in radiation from distant galaxies and celestial objects. This is interpreted as a Doppler shift that is proportional to the velocity of recession and thus to distance.

Question 11

Blue Shift

Answer 11

the displacement of the spectrum to shorter wavelengths in the light coming from distant celestial objects moving toward the observer.