EM Spectrum
True or False: Electromagnetic waves can travel through empty space.
What is TRUE? Other waves cannot (like sound waves)!
These telescopes gather and focus visible light.
What are optical telescopes?
The sun is a medium-sized ______ about which Earth and other planets revolve and is emits mostly this kind of light.
What is a star that emits mostly visible light?
This is the name of our galaxy.
What is the Milky Way galaxy?
This was the first country to launch a satellite into space. Also give the satellite'e name.
What is Russia (USSR) and the Sputnik I satellite?
What is radiant energy?
This telescope uses a convex lens to concentrate light on distant objects.
Humans see a small part of the electromagnetic spectrum called this.
What is visible light?
This is a planet that is not located in our solar system.
What is an exoplanet?
This was the USA's first satellite launched into space.
What is the Explorer I?
The shortest electromagnetic waves are _____ and the longest electromagnetic waves are ______.
What are gamma waves (shortest) and radio waves (longest)?
This telescope uses a curved mirror to concentrate light from far away objects.
What is a reflecting telescope?
ROYGBIV is...
What is the visible light spectrum that humans see and stands for "red, orange, yellow, green, glue, indigo, violet."
Rockets must overcome this force in order to travel into space.
What is gravity?
List 3 uses of satellites in orbit today.
What is weather, telephone/tv signals, GPS, defense, internet, airplane navigation?
Cool stars emit....
What is high wavelengths and low energy?
(infrared, radio waves)
These telescopes look like huge antenna dishes and use radio waves and microwaves from distant objects.
What is a radio telescope?
We can see the the other planets and the moon because of this.
What is they reflect light from the sun? THEY DO NOT EMIT THEIR OWN LIGHT!!
What is a satellite?
NASA stands for _____. It's purpose is to ____.
What is the National Aeronautics and Space Administration? It was established in 1958 to oversee all US space operations.
Hot stars emit...
What is short wavelengths and high energy?
(Gamma rays, x-rays)
These 3 telescopes in orbit we discussed in class have captured amazing images of our universe.
What is the Hubble telescope, the Spitzer telescope, and the James Webb telescope?
The speed of light is ...
What is 300,000 km/sec (186,000 miles/sec)?
These are used to launch satellites.
What are rockets?
List 2 reasons why space travel is dangerous to humans.
What is exposure to radiation and effects of weightlessness on the human body?