Science

What is the electromagnetic spectrum?

• It is the entire range of radiant energy carried by electromagnetic waves
• I don't know this 
• It is the refracting light from the telescope 

Why are telescopes put into space?

• The clouds may block the view.
• This is because the amount of radiation blocks the line of sight. Telescopes can't see anything.

In times past, people used to observe the sky what did they use to help them tell time? 

• earth
• stars
• galaxy
• telescope

What is a refracting telescope?

• A refracting telescope uses a convex lens to concentrate light from a distant object.
• A refracting telescope uses a curved mirror to concentrate light from a distant object. 
• DOGS!

How does the antenna on a radio telescope look like.

• TV radio dish
• Car antenna
• It doesn't have one

People today use what to help them see objects in the sky that people in the sky where not able to see

• stars
• telescope
• earth
• magellan

The shortest electromagnetic waves are called -----------------------------------.

• gamma rays
• radio waves
• earth waves
• visible light

The longest electromagnetic waves are called ---------------.

• gamma rays
• radio waves
• earth waves
• atmoshere

A ----- telescope uses a curved mirror to concentrate light from distant objects.

• refracting
• reflecting
• radio
• optical

Cool stars emit most of their radiant energy as     -------- electromagnetic waves with ------- energy, such as radio waves and infrared waves.

• long; low
• low; long
• visible light; radio waves
• gamma rays; radio waves