The oceans were formed when the earth cooled and water vapor condensed to create rain.
How are the carbon, nitrogen, and oxygen cycles similar?a.They are all biogeochemical cycles.b.They all involve an interaction between living and nonliving elements.c.They are all part of the Earth system.d.All of the above.
Natural erosion can be caused by _______.a.farmingb.windc.deforestationd.all of the above
Which of the following best describes the impact of glaciers upon the surface of the earth?a.Ice buried continents under a few hundred feet of ice.b.Glaciers scraped across the surface and altered landscapes and the course of rivers.c.The passage of glaciers created new ecosystems.d.All of the above.
Which of the following statements about weathering is true?a.Physical and chemical are the two types of weathering.b.Weathering occurs when rocks are subjected to the movement of wind or water.c.Humans are the only cause of weathering.d.Movement is required for weathering to take place.
Which of the following statements about positive feedback mechanisms is not true?a.Positive feedback mechanisms can result from human activity.b.Positive feedback mechanisms can occur naturally.c.Positive feedback mechanisms lead to increased change.d.Positive feedback mechanisms reduce change in a system.
The biosphere is the only one of Earth’s systems that contains life.
Greenhouse gases are best described as _______.a.the result of fossil fuel useb.gases that cause the greenhouse effectc.carbon dioxide and methaned.gases that trap energy from the sun in Earth’s atmosphere
What is the main advantage to using satellites to measure climate change?a.They can measure aspects of climate globally.b.They are unaffected by the weather conditions they measure.c.They are a universal tool for measuring all factors of climate.d.They can measure the amount of rainfall a specific area receives.
Which of the following statements about artificial erosion is true?a.Artificial erosion can occur 100 times faster than natural erosion.b.Farming practices do not contribute to artificial erosion.c.Artificial erosion causes a loss of fertile soil.d.Artificial erosion is only caused by recreational activities.
Chemical and physical weathering both involve direct contact of the atmosphere with rocks, soils, and minerals.
Manmade global warming is caused by _______.a.pollutionb.water vaporc.farmsd.species extinction
Global warming is a theory accepted by a majority of scientists.
Humans’ use of rocks and minerals as building materials is an example of which interaction?
Explain why scientists are concerned about human activities that cause global warming if global warming is caused by the greenhouse effect and the greenhouse effect is a natural part of Earth’s climate.
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