1. A
2. C
3. C
4. C
5. B
6. D
7. B
8. A
9. A
10. C
11.C
12. B
13. D
14. A
15. A
16. A
17. B
18. D
19. A
20. D
21. B
22. A
23. B
24. ESSAY
25. ESSAY
I got 100%. Idk why no one has posted the answers yet ;-;
2. C
3. C
4. C
5. B
6. D
7. B
8. A
9. A
10. C
11.C
12. B
13. D
14. A
15. A
16. A
17. B
18. D
19. A
20. D
21. B
22. A
23. B
24. ESSAY
25. ESSAY
I got 100%. Idk why no one has posted the answers yet ;-;
2B
3A
4A
5C
6A
7D
8D
9A
10D
11B
12B
13C
14B
15C
16B
17C
18D
19A
20B
21C
22D
23D
essay's
(: 100 %
2B
3A
4A
5C
6A
7D
8D
9A
10D
11B
12B
13C
14B
15C
16B
17C
18D
19A
20B
21C
22C
23D
24Essay
25Essay
Your welcome!!!!
2. B
3. A
4. A
5. C
6. A
7. D
8. D
9. A
10. D
11. B
12. B
12. B
13. C
14. B
15. C
16. B
17. C
18. D
19. A
20. B
21. C
22. C
23. D
24. Essay
25. Essay
2B
3A
4A
5C
6A
7D
8D
9A
10D
11B
12B
13C
14B
15C
16B
17C
18D
19A
20B
21C
22D
23D
essay's
1. c
2. b
3. a
4. a
5. c
6. a
7. d
8. d
9. a
10. d
11. b
12. b
13. c
14. b
15, c
16. b
17. c
18. d
19. a
20. b
21. c
22. c
23. d
( these two answers below may be wrong)
24. discovery of radium and polonium
first woman to win a Nobel
discovered that pitchblende has more radioactivity than radium and/or
polonium
assisted making portable X-ray machines
took over her late husbands job as a professor
25. Sonar waves are being used to see underwater
~Boo
2B
3A
4A
5C
6A
7D
8D
9A
10D
11B
12B
13C
14B
15C
16B
17C
18D
19A
20B
21C
22C
23D
essay's
(: 100 %
ok, so these are the correct answers, i promise, essay questions may be incorrect though
1. c
2. b
3. a
4. a
5. c
6. a
7. d
8. d
9. a
10. d
11. b
12. b
13. c
14. b
15, c
16. b
17. c
18. d
19. a
20. b
21. c
22. c
23. d
( these two answers below may be wrong)
24. discovery of radium and polonium
first woman to win a Nobel
discovered that pitchblende has more radioactivity than radium and/or
polonium
assisted making portable X-ray machines
took over her late husbands job as a professor
25. Sonar waves are being used to see underwater
-James Stag
1. A weatherman reports, "The storm waves are about 2 meters high and about 35 meters apart." What properties of waves is the reporter describing?
A. Frequency and wavelength
B. Wavelength and wave speed
C. Amplitude and wavelength
D. Amplitude and Frequency
2. What type of wave is shown above?
A. Transverse wave
B. Longitudinal wave
C. Surface wave
D. Electromagnetic wave
3. Soundproof rooms take advantage of which property of waves?
A. Absorption
B. Regular reflection
C. Refraction
D. Diffuse reflection
4. The image above shows particles in a medium. Which of the following shows the best conditions for a sound wave to travel?
A. A
B. B
C. C
D. D
5. When the energy of a sound wave is transferred to a particle of a medium and causes it to vibrate and generate heat, the sound wave is...
A. Reflected
B. Refracted
C. Absorbed
D. Transmitted
(Use the chart... shows mediums of: 1. air at 0Β°c - speed 331; 2. air at 20Β° C- speed 343)
6. The difference between the speed of sound in air at 0Β° C and the speed of sound in air at 20Β° C is that ...
A. Cooler air molecules move more slowly and respond less readily to the energy of a sound wave.
B. Cooler air molecules move more quickly and respond less readily to the energy of a sound wave.
C. Cooler air molecules do not move and respond less readily to the energy of a sound wave.
D. Cooler air molecules move more randomly and respond less readily to the energy of a sound wave.
7. The pitch of the siren of a moving fire truck changes from high to low as the fire truck passes by. What property of a sound wave changes as the fire truck goes by?
A. Amplitude
B. Density
C. Temperature
D. Frequency
8. Use the image to answer the question. In the above light wave, the property labeled A determines which characteristic of visible light?
A. Brightness
B. Speed
C. Reflection
D. Color
9. Sonar is used to inspect pipelines and bridge foundations. In this scenario, sonar takes advantage of the fact that...
A. Sound waves can reflect.
B. Sound waves can diffract.
C. Sound waves can spread out.
D. Sound waves can refract.
10. Which of the following correctly describes a gamma ray?
A. Long wavelength and low frequency
B. Long wavelength and high frequency
C. Short wavelength and low frequency
D. Short wavelength and high frequency
11. Which of the following is true about all electromagnetic waves in a vacuum?
A. They all carry the same energy.
B. They all travel at the same speed.
C. They all have the same frequency.
D. The(y) all have the same wavelength.
12. Use image to answer the question. Which letter shows the type of wave that can be seen by the human eye?
A. A
B. B
C. C
D. D
13. FM signals travel as changes in...
A. The speed of the wave.
B. The amplitude
C. The frequency of the wave.
D. The loudness of the wave.
14. What is the principal role of a tower within a cellular system?
A.
B.
C.
D.
15. Use the image to answer the question. (Satellite communication)
What does the object A do when it acts as a transmitter?
A. Receives radio signals.
B. Prevents radio signals.
C. Sends radio signals.
D. Reduces radio signals.
16. Use the image to answer the question. The electromagnetic wave shown above is made of vibrating...
A. Transverse and longitudinal waves.
B. Electric and magnetic fields.
C. Gamma and UV rays.
D. Radio infrared waves.
17. Use the image to answer the question. In the diagram above, three beams of light encounter a medium. Light ray A is reflected, while light rays B and C are absorbed. How can the medium be described?
A. Transparent
B. Translucent
C. Opaque
D. Clear
The image of a mountain can be seen on the surface of calm water. What property of light is demonstrated?
A. Diffuse reflection
B. Diffraction
C. Refraction
D. Regular reflection
19. Use the image to answer the question. The light ray is entering the water from the air. How should the light ray respond to the change of medium?
A. It will slow down and bend downward.
B. It will speed up and bend downward.
C. It will slow down and bend upward.
D. It will speed up and bend upward.
20. Henri Becquerel expected to see only weak images on the photographic plate containing the uranium salt because he thought...
A. Fluorescent minerals needed direct sunlight to produce radio waves.
B. Fluorescent minerals needed direct sunlight to produce x-rays.
C. Fluorescent minerals needed direct sunlight to produce microwaves.
D. Fluorescent minerals needed direct sunlight to produce gamma rays.
21. Marie and Pierre Curie noticed burns on their fingers after handling test tubes containing radioactive substances. This observation led to...
A. The discovery of natural fluorescence.
B. The discovery of x-rays.
C. The discovery of radiation therapy.
D. The discovery of uranium.
22. How does radioactivity make it possible to understand how Earth can be so old and still have a hot interior?
A. Radioactive elements trap heat from underground magma chambers.
B. Radioactive elements absorb heat from the atmosphere and release it underground.
C. Radioactive elements near the core release heat as their nuclei decay.
D. Radioactive elements absorb the cold temperatures underground.
23. The speed of sound depends on...
A. the loudness of the sound.
B. the pitch of the sound.
C. The source of the sound.
D. The properties of the medium it travels through.
Short answer - Essays
24. What are five key accomplishments of Marie and/or Pierre Curie?
*Use the image to answer the next question. (Picture if a boat with waves going down to ocean floor.)
25. What is happening in the diagram?
*sorry if there's any spelling errors. I did fix the error from the test for #11 on here by putting the letter in parenthesis.
Hope this helps.