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6th Grade Ch 4 Test
Ch. 4 Test
| Question | Answer |
|---|---|
| 1. Stars that outline a picture in the sky are called: | constellation |
| 2. Large clouds of gas and dust in space: | nebula |
| 3. An area that contains no air: | vaccuum |
| 4. A familiar shape within the constellation Ursa Major: | big dipper |
| 5. The hottest region of the sun: | core |
| 6. The force that resists motion: | friction |
| 7. Streams of gas erupting from the chromosphere and looping: | solar prominences |
| 8. Spiral arms attached to a straight “bar” that runs through a galaxy: | barred spirals |
| 9. The study of outer space is called: | astronomy |
| 10. Dark patches on the sun’s photosphere: | sun spots |
| 11. Part of the sun visible only during a solar eclipse: | corona |
| 12. A high-speed stream of particles that travels outward from holes in the corona: | solar wind |
| 13. 3 basic types of galaxy shapes: | spiral, elliptical, irregular |
| 14. The brightest star in the night sky: | Sirius |
| 15. The brightest star in the constellation Perseus: | Algol |
| 16. The brightest star in the constellation Leo: | Regulus |
| 17. The closest star to the earth: | Proxima Centauri |
| 18. The pole star is known as: | Polaris |
| 19. A _______________________ is the actual explosion of a star. | Supernova |
| 20. A _______________________ is a pair of stars that travel together and rotate around each other as an orbit. | binary star |
| 21. The _____________________ is the hottest region of the sun’s atmosphere. | corona |
| 22. The _____________________ is the part of the sun’s atmosphere closest to its surface. | chromosphere |
| 23. The sun is located ___________________ miles away from Earth. | 93 million |
| 24. The cluster with about 40 galaxies in which we find Earth is called the ______________. | Milky Way |
| 25. A _______________________ is a star system containing millions to billions of stars. | galaxy |
| 26. The _____________________ is the imaginary line that stretches from pole to pole. | axis of rotation |
| 27. Who thought the universe was earth-centered? | Ptolemy |
| `28. Who FIRST thought the universe was sun-centered? | Copernicus |
| 29. Who came up with the 3 laws of planetary motion? | Kepler |
| 30. Who came up with the law of universal gravitation (gravity)? | Newton |
| 31. A symmetrically shaped oval: | ellipse |
| 32. The name that means “wanderers”: | planets |
| 33. The distance between the earth and the sun is an __________________________ unit. | astronomical unit |
| 34. What is the force of attraction that exists between any two objects? | gravity |
| 35. What are the two points inside an ellipse? | foci |
| 36. What is the phase of the moon that displays the most light? | full moon |
| 37. Which tide occurs when the moon is in line with the earth and sun? | spring tide |
| 38. The _______________________ is a band of comet-like objects located beyond the orbit of Neptune. | Kuiper belt |
| 39. A _________________ is an asteroid-sized chunk of rock, dust, and ice that develops a “tail” as it nears the sun. | comet |
| 40. A _____________ year is 365 ¼ days. | solar |
| 41. The amount of time it takes for a comet to complete its orbit is called a ____________. | period |
| 42. The earth completes one ___________________ in 24 hours. | rotation |
| 43. Two planets with no moons: | Venus and Mercury |
| 44. The ____________________ is made up of the sun and all the heavenly bodies that orbit it. | Solar system |
| 45. For extra credit, be able to list the 8 planets in order. | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune |
Created by:
misschapman
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