Astronomy Word Scramble

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Question	Answer
1. What factor caused different planets to form out of different types of material?	The variation in temperature throughout the solar nebula; the higher the temperature, the lower the percentage of light elements in the forming planet.
2. The planet's orbital period is:	the time it takes to return to the same location in the sky, relative to the Sun.
3. The Kuiper Belt is:	a band of icy planetestimals found beyond Neptune's orbit.
4. As a result of the ejection of planetesimals into the Oort Cloud, simulations indicate that Uranus and Neptune moved:	further from the Sun
5. The difference between a meteoroid and an asteroid is the objects:	size
6. Planetary orbits:	are almost circular, with low eccentricities.
7. Masses of the planets are easiest to determine if:	they have natural satellites whose motions can be precisely measured
8. What happens when a solar nebula contracts?	It heats up, spins faster, flattens out. (All of the above)
9. What is true about solar system densities?	the denser planets lie closer to the Sun.
10. In light modern solar system theory, why do the orbits of the planets all lie in the same plane?	The early solar nebula flattened into a disk
11. Mercury's most unusual orbital feature, as compared to the other planets is:	the shape of its orbit.
12. The meteorites that strike Earth are:	the oldest rocks known
13. Which of the following have an icy composition?	comets
14. What aspects of the planets orbits are nearly the same for most planets?	shape and tilt from the ecliptic
15. What is the goal of comparative planetology?	to determine the origin and evolution of the solar system
16. The smallest sort of interplanetary matter is called:	interplanetary dust
17. In composition, asteroids and meteoroids are most like:	terrestrial planets
18. As the solar nebula contracts it:	spins faster due to conservation of angular momentum
19. The largest asteroid, and probably the only one to be a spherical "world", is:	Ceres
20. A meteorite is:	a chunk of space debris that has struck the ground.
21. The Jovian planets:	All have rings around their equators
22. An alternative to the core-accretion theory that explains the formation of the Jovian planets is the:	Gravitational instability theory
23. The Kuiper belt is found where in the solar system?	Beyond the orbit of Neptune
24. Which of the following is considered "interplanetary matter"?	Comet hale-bopp
25. In order to determine the mass of a planet by applying Newtons law of motion of gravity, the planet must have:	Moons
26. A gravitational "sling shot"	Changes the speed and direction of a spacecraft nearing a massive planet
27. Which planet itself contains the majority of mass of all the planets?	Jupiter
28. What was the primary role of dust in the formation of the solar system?	Dust acted as as condensation nuclei; platforms to which other particles could attach and form larger particles of matter
29. What factor caused different planets to form out of different types of material?	The variation of temperature throughout the solar nebula
30. The jovian planets:	All have rings around their equators
31. Most asteroids are found:	between the orbits of Mars and Jupiter
32. The Kuiper Belt is an "outer asteroid belt" consisting of what types of solar system bodies?	icy cometlike bodies
33. Conservation of angular momentum means that a spinning body tends to	keep spinning.
34. Dust is an important part of the nebular theory of solar system formation because dust is needed to explain:	how the inner planets came to be rocky bodies.
35. Which spacecraft gave or is giving us our best information about Mercury?	Mariner 10
36. As the solar nebula contracts due to gravitation, the cloud	spins faster
37. What is true about solar system densities?	The denser planets lie closer to the Sun.
38. The most detailed look we've had of an asteroid comes from:	spacecraft sent to an asteroid.
39. Which of these spacecraft went into orbit about Saturn in July 2004?	Cassini
40. One possible way that future scientists may determine whether the core- accretion model or the gravitational instability theory better explains the formation of the jovian planets is:	measuring the mass of the rocky material in the jovian planets' cores
41. The average density of each planet in the solar system is determined by taking its mass and dividing that by its	volume
42. In the conventional scenario, during phase of planet formation caused the jovian planets to form?	Core-accretion
43. The moons of the jovian planets formed by which two processes?	Accretion and capture
44. What is the role of irregularities in the solar system in terms of theories of its origin?	They introduce a need for flexibility in theories of the solar system's origin
45. The Kuiper Belt is:	a band of icy planetesimals found beyond Neptune's orbit
46. The Kuiper Belt is found where in the solar system?	Beyond the orbit of Neptune
47. As a rotating gas cloud contracts, it spins	faster due to conservation of angular momentum
48. How do the densities of the Jovian and terrestrial planets compare?	All Terrestrials are more dense than all the Jovians.
49. Which statement about the motion of the planets is incorrect?	Most planets move in the Earth's equatorial plane.
50. Which of these bodies has the lowest density?	Saturn
51. The plane in which almost all planets orbit the sun is called the:	ecliptic.
52. Which of the characteristics below describes the terrestrial planets?	possessing weak magnetic fields
53. The rotation periods of Venus, Jupiter, Saturn, Uranus and Neptune are difficult to determine because	their surface features are obscured by their atmospheres.
54. In composition and mass and density, Jupiter is most like:	the Sun.
55. What is the process of accretion?	growth of an object by the accumulation of matter
56. Which of the following are the Jovian planets?	Jupiter, Saturn, Uranus, and Neptune only
57. The Oort Cloud is believed to have been formed by:	planetesimals that were flung far from the Sun in gravitational encounters with the jovian planets.
58. Which objects in the solar system have been least modified since the formation of the solar system?	Kuiper Belt objects
59. The planet's orbital period is:	the time it takes to return to the same location in the sky, relative to the Sun.
60. Which characteristic listed below describes the jovian planets?	low density
61. A successful theory of the formation of the solar system must explain:	all observed properties of the solar system.
62. The "Grand Tour" of all four jovians was conducted by:	Voyager 2.
63. In composition and density, the asteroids most resemble:	pieces of terrestrial planets.

Created by: graync