Unit 1 Test Space

2. When light is moving towards us and the frequency gets higher.
3. In the E=mc^2 equation, mass has to be measured in ___.
5. In the E=mc^2 equation, e is __.
8. This scientist came up with the E = mc^2 equation.
10. Energy is measured using ___.
14. This is the oldest type of light radiation.
15. The amount of matter that makes up an object.
17. When light gains energy the wavelength gets __.
18. The brightness of a star depends on distance and __.
20. A substance that allows energy to transfer through it. Ex) Solid, liquid or gas.
21. When light is moving away from us and the frequency gets lower.
24. This is a collection of millions or billions of stars, planets and dust held together by gravity.
26. Type of energy produced from stars.
27. The order of magnitude is the __ in when the number is written in scientific notation.
28. This is a type of energy that needs a medium to travel through.
30. This scientist came up with the laws about planetary motion.
31. This measures the distance from the top of a wave to the next top of a wave.
32. This measures how much energy is in a wave.
33. This is impacts the brightness of a star the most.

1. This determines the color of a star.
4. When visible light gains too much energy it becomes ___.
6. These are positive subatomic particles that make up an atom.
7. This type of element has 2 protons.
9. When visible light loses energy it becomes ___.
11. This is what happens to sound and light when an object is moving causing a change in frequency.
12. This depends on mass and distance. This is also the force of attraction between two objects.
13. When light is too energized it can become this. This is also the type of radiation to kill cancer cells.
16. This value is equivalent to 300,000,000 m/s.
19. This is a measurement of distance that is used for celestial objects.
22. The most accepted theory of the creation of the universe.
23. This is the most abundant type of gas in the universe.
25. When light loses energy the wavelength gets __.
29. This is the cause of the extra expansion of the universe.