Telescopes

Who invented the telescope?

• Galileo
• Plato
• Ptolemy
• it's unknown

What was Galileo's contribution to the telescope?

• He invented it
• He patented it
• He discovered it
• He promoted it

This instrument can be thought of as a large light bucket

• your eyes
• a lens
• a telescope
• a satellite dish

The "collector", or "light-gathering part" of the telescope is called the _____

• objective
• ocular
• eye piece
• refractor

If the collector is made 10 times wider, how much more light is collected?

• 2 times more
• 10 times more
• 20 times more
• 100 times more

When light passes through a lens, it _____

• reflects
• is absorbed
• bounces
• changes direction

The bending of light through a lens is called _____

• reflection
• refraction
• diffraction
• absorption

When the light comes to a focus, using a refracting telescope, it is _____

• upside-down, and flipped left and right
• only flipped left and right
• only upside-down
• unchanged

The image, observed in a telescope, is _____

• bigger than the object
• the same size as the object
• slightly smaller than the object
• much smaller than the object

The ability to separate two objects that are very close together, is called the _____

• orientation
• attitude
• magnification
• resolution