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Abeka Grade 9 Science Test 2
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Avg score: 50% • Most missed: “A visible spectrum in the sky produced by falling raindrops is a ________.”
Abeka Grade 9 Science Test 2
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25 Questions

1. The type of ultraviolet radiation that causes suntans and sunburns is ________.

2. A visible spectrum in the sky produced by falling raindrops is a ________.

3. Find the speed of a wave that has a wavelength of 1.5 m and a frequency of 4.0 Hz.

4. The theory stating that light has characteristics of both particles and waves is the _______ theory of light.

5. What term refers to any change in speed, direction or both?

6. The branches of physics developed since 1900 are called ______ physics.

7. A vector showing the combined effect of two or more vectors is a ______.

8. Which group of instruments includes the clarinet?

9. What type of machine is a combination of fixed and movable pulleys?

10. What color is NOT a color of the visible spectrum?

11. The spreading out of a wave after it passes through a narrow opening is ________.

12. the velocity of an object does not change unless the object is acted upon by an external force

13. A beam of light containing waves that all vibrate in the same direction is ________.

14. A physical quantity that has both magnitude and direction is a ______ quantity.

15. What is the average speed of a person who walks 28 km in 7.0 hrs?

16. What is the mutual reinforcement or cancellation that occurs when two or more waves meet?

17. In what phenomenon does light knock electrons loose from the atoms of certain metals?

18. The speed of light is constant in a _________.

19. the angle of incidence is equal to the angle of reflection

20. when the overall external force acting on a system is zero, the momentum of the whole system remains constant

21. A lever that has the input force between the fulcrum and the output force is a ________.

22. The illusion of water covering a hot highway in the distance is an example of a ________.

23. any two objects attract each other with a force that depends on their masses and the distance between them

24. for every action there is an equal and opposite reaction

25. Name the scientist who predicted stimulated emission and formulated the theory of relativity?

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