TEKS Grade 8 Science - 8.8 Diagnostic - Universe
Quiz by Texas Education Agency
Grade 8
Science (2017)
Texas Essential Knowledge and Skills (TEKS)
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10 questions
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- Q1The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?The stars in the center of the galaxy are extremely small.Earth is a part of this galaxyThe center of the galaxy consists of a dense cluster of stars.Many more stars exist outside the galaxy.30s8.8a
- Q2The Hertzsprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related. Which of these observations of Barnard’s Star is most likely accurate?Barnard’s Star is brighter than the sun, has a surface temperature below 5,300 K, and is yellow.Barnard’s Star is less bright than the sun, has a surface temperature above 3,800 K, and is red.Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow.Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.30s8.8a
- Q3Why does Earth get more energy from the sun than from all the other stars in the universe combined?The sun is much more dense than the other stars.The sun is much hotter than the other stars.The sun is much larger than the other stars.The sun is much closer than the other stars30s8.8b
- Q4Based on your knowledge of our solar system, which planet would take the least amount of time to orbit the star?Inner PlanetsNone of theseOuter PlanetsDwarf planets30s8.8b
- Q5Which statement about stars is correct?supergiants are stars that can absorb black holeswhite dwards become main-sequence stars when they gain massStar formation begins in a nebulamain-sequence stars are formed by comets30s8.8b
- Q6Quasars are extremely distant celestial bodies. Investigators using a special telescope determined that a certain quasar was emitting waves with a frequency of 1 4. 1 × 109 Hz. An electromagnetic spectrum is shown. The investigators were most likely using a telescope that detects —gamma raysmicrowavesvisible lightx-rays30s8.8c
- Q7What instrument collects electromagnetic radiation from objects and concentrates it?endoscopetelescopestethoscopemicroscope30s8.8c
- Q8The table lists the distances of some of the nearest stars. Based on the table, a student used a measuring tape to model the distances between the sun and these nearby stars. The sun was at the starting point. Proxima Centauri was at the 10 m mark. Which star was closest to the 20m mark in this model?Sirius AWolf 359Barnard's StarRoss 24830s8.8d
- Q9Which statement best describes evidence of the Big Bang Theory?Galaxies throughout the universe moved toward each other after an event that occurred about 13.7 billion years agoMost objects in the universe are moving away from each other as a result of an event that occurred about 13.7 billion years ago.Galaxies within the universe collided about 13.7 billion years ago forming the present objects in the universeExisting objects in the universe moved randomly with the potential of colliding in about 13.7 billion years30s8.8d
- Q10Why is the BIg Bang Theory considered the most scientific accepted theory?All other theories are right tooIt is the origin story of the Universe with the most evidenceIt led to the immediate creation of early life forms such as humansIt created Science and data30s8.8d
