50. This is a sedimentary rock made entirely of calcium carbonate. 47. Sandstone

Question

50. This is a sedimentary rock made entirely of calcium carbonate.

47. Sandstone is a metamorphic rock.

45. What causes earthquakes, volcanoes, mountains, the MOR and the jigsaw puzzle fit of the continents?

44. ________ is a moon of Saturn.

43.Which planet displays retrograde rotation?

42. How can contact metamorphism result in the deposition of ore deposits?

41. The Green River Formation of Wyoming is contains rich oil shales. In what geologic environment were these shales deposited?

40. Mars is farther from the sun than the Earth.

39. People (humans from Earth) have walked on the moon.

38. Similar to the Earth, Venus has very few meteor craters.

37. Valles Marineris is roughly 3000 miles long (as long as the US is wide).

36. Mars is roughly the same size as the Earth.

35. Mars is the 'Red Planet' .. the surface rocks are most probably oxidized (rusted).

34.Venus has highlands (similar to continents) and large lowlands (similar to ocean basins, but with no liquid water).

33. These Mars channels have liquid water in them today. (Photo is from the 8th edition Tarbuck and Lutgens textbook, NASA/JPL and National Geographic).

32. The moon has more craters than the Earth because the Moon does not have much of an atmosphere for protections against meteors, nor does the moon have water erosion or plate tectonic recycling.

31. The Lunar Dust on the moon was created by millions of years of meteor impacts.

30. Because Venus has volcanoes and large faults, plate tectonics may have occurred on Venus.

29. Millions of years ago, Mars may have had conditions favorable to life as we know it . liquid water, a thicker, warmer atmosphere with oxygen ..

28. Valles Marineris is the largest shield volcano (if you don't count the MOR) in the Solar System.

27. We have brought back rocks from Venus.

26. Venus' thick atmosphere creates a surface pressure of 90 atmospheres (90 times the weight of the atmosphere on Earth at sea level).

24. Mars' thick atmosphere creates a surface pressure of 90 atmospheres (90 times the weight of the atmosphere on Earth at sea level).

Explanation / Answer

Answer-

50.Chalk -

Explanation- Chalk is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Calcite is an ionic salt called calcium carbonate or CaCO3.

49. Time lag Primary waves and secondary waves intervals is 4 minutes.

Explanation- In the given graph One small line is equal to one minutes and here first arrival of the primary wave is 2 minutes and first arrival of S waves is 6 minutes the difference between P and S waves is 4 minutes.

48. Given diagram have Fault structure

Explanation-because there is displacement of strata.

46. Primary Waves.

Explanation- P waves is compressional waves which causes the particparticle of rock to vibrate in the longitudinal direction of compress and expand.

45. Plate tectonics is responsible of major earthquake, volcanoes, mountain MO Ridges and it solved the jigshow puzzle because of the plates movement like conversion divergence and transform plate boundary.

44. Tethys.

Explanation- The moons of Saturn are numerous and diverse,ranging from tiny moonlets less than 1 kilometer across to the enormous Titan, which is larger than the planet Mercury.Thethys, Mimas, Enceladus, Dione, Rhea these all are moons of Saturn.

43. Venus and Uruns

Explanation- In our Solar System, all of the planets and most of the other objects that orbit the Sun, with the exception of many comets, do so in the "prograde" direction, i.e. the same sense as the rotation of the Sun. In addition, the rotations of most planets are prograde, with the exceptions of Venus and Uranus, which have retrograde rotations.

42. Hot magma burns the country rocks which experiences a mineral phase change is ture.

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