1. Earth’s around the sun equals about 24 hours.
2. is the motion of earth along a path around some point in space.
3. Earth’s is tilted about 23.5 degrees.
4. of Earth is the slight movement over a period of 26,000 years of Earth’s axis.
5. is the wobbling of Earth around the precessional axis.
6. is the center of mass where two or more celestial bodies orbit each other.
7. The axis of rotation causes the yearly cycle of .
8. During the , the Earth is closest to the sun, while during the , the Earth is farthest from the sun.
9. When the Earth’s axis points the sun, it is summer for that hemisphere.
10. result from the gravitational attraction exerted upon the Earth by the moon.
11. The shape of the earth is not a true sphere, it is an _____, bulging at the equator.
12. The moon ____ around the earth.
13. The universe is made of which consists of many .
14. is the process that produces radiant energy for the stars.
15. The is the ultimate source of energy.
16. During photosynthesis, plants take in sunlight, , and water to create glucose and releases _____.
17. The path of each planet around the sun is an .
18. Our solar system is located on the Orion arm of the Galaxy
19. Land heats more _____ and to higher temperatures than water.
20. It takes more _____ to change the temperature of water.
21. The strong generated by the movement of the Earth’s liquid outer core absorbs harmful radiation
released by solar winds.
22. is the force of air, exerted on the objects on Earth’s surface being pushed from every direction.
23. Air pressure is measured by a tool called a .
24. Air moves from areas of pressure to areas of pressure.
25. An _____takes on the temperature and moisture characteristics of the surface below it.
26. Air masses are classified by their (hot or cold) and (moist of dry).
27. A , represented by blue triangles on a weather map, occurs when a cold air mass pushes up on warm air causing
severe weather.
28. A , represented by red semicircles on a weather map, occurs when a warm air mass slides up and over a cold
air mass, creating rainy weather.
29. Relative humidity is measured using a .
30. is the temperature at which air releases excess moisture causing precipitation.
31. The atmosphere is divided into 5 layers: , ___, mesosphere, thermosphere and exosphere.
32. The is the layer closest to the surface and is where life and most weather occurs
33. The protects us from harmful UV radiation from the sun and is found in the stratosphere.
34. The Köppen Climate Classification System classifies the world's climates based on the average and
.
35. is the average daily weather for an extended period of time at a certain location
36. is a climate pattern representing an unusual warming of the Pacific Ocean including wetter conditions for the
southeast US.
37. Water vapor and carbon dioxide (greenhouse gases) are the major gases that absorb .
38. is the primary greenhouse gas that is contributing to recent climate change.
39. can affect communities by increasing summertime energy demand, air conditioning costs, and air pollution.
40. is the total amount of salt dissolved in water.
41. Ocean density depends on the and _____ of water.
42. move warm water from the equator towards the colder water at the poles.
43. Water has a higher ____ than soil and rock.
44. is a consequence of human emissions of carbon dioxide to the atmosphere.
45. change is the driving force of processes that change sea levels over time.
46. The ocean is a “ ___ which means that it removes CO2 from the atmosphere.
47. Sea level rise depends on land elevation changes that occur as a result of ____ (sinking) or (rising) of coastal
areas.
48. An is a community of organisms that interact with biotic and abiotic factors in that environment.
49. A is a group of ecosystems that share both biotic and abiotic conditions.
50. A is a factor that restricts the size of a population from reaching its full potential.
51. is the genetic variation within populations.
52. species grow uncontrolled where native species otherwise would occur.
53. crops maintain nutrients in the soil.
54. is the maximum number of organisms an ecosystem can support.
55. Growing human population leads to habitat ____ and a loss of .
56. are nontoxic, nonflammable chemicals that deplete the ozone layer.
57. Sulfur dioxide and nitrogen oxides are two of the gases involved in the creation of .
58. CFCs (Chlorofluorocarbons) are used in the manufacture of aerosol sprays and .
59. are minute particles suspended in the atmosphere that scatter and absorb sunlight.
60. account for nearly 90% of the energy used in the US.
61. Reducing reusing, and recycling help to reduce human impacts on the environment.
62. which is partially decayed plant material is the first stage of coal production.
63. is the process of converting liquid water into water vapor.
64. is the process of plants releasing water through their leaves.
65. occurs when water is absorbed into the surface of the earth.
66. An is an underground layer of rock or soil that contains water.
67. A is a hole dug into the earth used to pump water for use and consumption.
68. trap sediment from flowing water sources, ____ the water volume.
69. Salt water is the movement of saline water into areas of freshwater near coasts and beaches.
70. As the population on Earth , water availability .
71. A is the area of land where all of the water goes into the same place.
72. Water quality can be reduced due to the use of _____ and .
73. can then affect the amount of oxygen in waters which aquatic animals need to live.
74. is the result of weathering of rocks and includes weathered particles such as sand, silt, and clay.
75. occurs when physical forces break rock into smaller pieces without changing the rock’s mineral
composition.
76. is the transformation of rock into one or more new compounds.
77. There are four agents of erosion: , ____, ice and gravity.
78. is when an agent of erosion loses energy and drops sediments.
79. A is used to classify soils using different proportions of sand, silt and clay.
80. are caused by soluble rock that is dissolved by acid rain.
81. is the increasing number of people that live in urban areas.
82. is the removal of trees in a forest for the conversion of farms, ranches, or urban use.
83. pollution is pollution that comes from one source such as a waste water treatment plant or industry.
84. pollution is pollution that enters the environment through some means other than a direct source such
as runoff or construction sites.
85. Human activities often contribute to or accelerate the shoreline process.
86. The forms of energy that drive the rock cycle include and ____ energy.
87. ____ is any solid mass of mineral or mineral-like matter that occurs naturally as part of our planet.
88. rock is formed by the crystallization of molten magma.
89. rock is formed from the weathered products of pre-existing rocks that have been transported, deposited,
compacted, and cemented.
90. rock is formed by the changing pre-existing rock through heat and pressure.
91. The is a continuous process that cause rocks to change.
92. An occurs when rocks break or slip along fault lines in the Earth’s crust.
93. The of an earthquake is the point of origin of the earthquake and the is the point on the surface.
94. waves arrive last and are the most destructive of all the seismic waves.
95. activity begins when a crack develops in the crust as magma is forced towards the surface.
96. Plate movement is driven by distribution of heat within the Earth.
97. The lithosphere is divided into segments called which move and change shape and size.
98. A boundary occurs when two plates move apart.
99. A boundary forms where two plates move together.
100. A boundary occurs when two plates slide past each other without the production or destruction of lithosphere.