The Universe Vocabulary

2. A disturbance that travels transporting energy from one location to another location
4. Scientists use light years to measure distances in space
5. our Sun is located in a spiral galaxy called the Milky Way
8. no particular shape to the stars and rare
10. The most widely accepted theory that the universe began as a single point that exploded and continues to expand
11. Is an increase in the frequency of those sound waves as the siren approaches you, and a decrease in frequency as the sound leaves you.
12. Waves that can pass through atmosphere and transmit info on Earth. Used in weather radars.
14. When the stripes shift towards the blue end of the spectrum. The color blue has a shorter wavelength, this means that the object they were looking at is moving towards from Earth.
17. Waves that have the longest wavelength and a slowest frequency. Used in TV, radio, cell phones
19. the amount of energy produced by a celestial body, how bright a celestial body is.
20. is a group of billions of stars
24. how bright stars seem to be when we look at them in the sky.
25. Waves that come from the sun, most are blocked by ozone layer, but those that reach earth cause sunburns.
27. the speed at which the wave travels
28. Require a medium for energy to travel and include transverse (seismic waves) and compressional waves (Sound Waves)

1. objects in space such as the sun, moon, planets, and stars.
3. A type of galaxy that looks like a pinwheel and is the most common.
6. How high or low the tone of sound is.
7. When the stripes shift towards the red end of the spectrum. the color red has a longer wavelength, this means that the object they were looking at is moving away from Earth
9. Waves that transfer energy a and can travel through empty space
13. oval shaped galaxy dense center of stars
15. organizes stars based on their physical characteristics, luminosity and temperature.
16. Waves that can reveal information about stars, comets, black holes for scientists to study
18. The only EM waves we can see. All of the colors that we are able to see.
21. the size (length) of one wave
22. Waves that are generated by radioactive atoms and nuclear explosions. Can be used to treat cancer.
23. Waves that can transfer heat and be used in remote controls
26. Occurs when waves are bent as they travel through different mediums. When the waves are visible light waves, white light gets separated into the individual colors that it consists of: Red, Orange, Yellow, Green, Blue, Indigo, Violet