GED Practice

GED Science Review: Earth's Resources

Questions:
Directions: Write the answer to each question.

Question 1 and 2 refer to the passage and diagram below.

The Carbon Cycle

Carbon is an element that is essential to life. Atom of carbon can exist as part of different molecules commonly found in living things as well as the non-living parts of the ecosystem. Carbon moves through the environment in a process called the carbon cycle.
Part of the carbon cycle is a short-term cycle in which pants convert carbon dioxide from the atmosphere into sugars and starches. Plants use these substance for energy, releasing carbon dioxide into the air. Other organism eat the plants to get the carbon. Like plants, the organisms break down sugars for energy, releasing some of the carbon back into the air. The decay of dead organisms and wastes also releases carbon into the air. In contrast, the long-term cycle moves carbon through Earth's system over very long periods. Carbon is stored in the geosphere as buried  plant or animal remains. Over mullions of years, these buried remains form fossil fuels, which contain carbon. Carbon is also stored in a type of rock called a carbonate, which forms from shells an bones of once-living organisms.

carbon cycle

  1. A prehistoric animal was buried millions of years ago. A carbon atom in the animal eventually entered Earth's atmosphere and become part of a plant. Describe the processes involved in moving the carbon atom.

  2. Which argument for reducing the use of fossil fuels is supported by evidence from the passage and diagram?
    • Fossil fuels are the most expensive source of energy.
    • It will take millions of years for new fossil fuels to form.
    • It is difficult to obtain fossil fuels from beneath Earth's surface.
    • Fossil fuels will not form again in areas where plants carry out photosynthesis.
  3. Scientist use evidence from the pst to learn about climate change. Which evidence best supports the claim that increased burning of fossil fuels has contributed to climate change?
    • tree ring data that sows years of typical rainfall for a climate zone
    • fossil samples that show adaptations in animals that live in polar regions
    • ice core samples that show the concentration of trapped atmospheric gases
    • sea floor sediment samples with bacteria that can survive extreme temperatures

      Questions 4 through 6 refer to the chart below.

      The United States imports its entire supply of several minerals, including those in the chart.

  4. Which two minerals listed in the chart are of greatest interest to the electronics industry?

  5. Which statement would best support an argument for the recycling of aluminum?
    • Aluminum is widely used in food packaging.
    • Strontium is the fifteenth most abundant element.
    • Batteries can be produced more cheaply without manganese.
    • Bauxite processing requires large amounts of electrical energy
  6. A U.S. source of thallium is discovered, but recovering the mineral would be more expensive than importing it. What might be a reason for mining and processing thallium in the United States?
    • The United States would reduce its dependence on foreign nations.
    • The United States would be the only source of thallium in the world.
    • Thallium is one of the minerals used in the production of superconductors
    • Thallium is one of the minerals used in the production of electronic equipment.
  7. In recent years, China has increased the amount of soft coal it burns in order to fuel its growing economy. As a result, China now leads the world in sulfur emissions, an air pollutant. A study of China's air pollution shows that the haze produced by burning soft coal acts as a filter, absorbing some of the sunlight that would normally be used by plants for photosynthesis.

    Which of the following is a possible result of the air pollution in China?
    • increased supply of soft coal
    • decreased agricultural production
    • decreased level of sulfur emissions
    • increased wind speeds during storms
  8. A water shed is a drainage area, a land area that catches rainwater and drains it by means of surface runoff, streams, rivers, lakes, and groundwater. In 1997, the Environmental Protection Agency issued an analysis of the water quality of the watershed in the continental United States. The results are shown below.



    Which argument is supported by evidence from the chart above?
    • Most watersheds had good quality water.
    • Three-quarters of the watersheds were not tested.
    • More than half of the watersheds had serious quality problems.
    • About one-fifth of the watersheds had serious quality problems.
Answer:

  1. combustion; photosynthesis
  2. It will take millions of years for new fossil fuels to form.
  3. ice core samples that show the concentration of trapped atmospheric gases
  4. sheet mica and thallium
  5. Bauxite processing requires large amounts of electrical energy
  6. The United States would reduce its dependence on foreign nations.
  7. decreased agricultural production
  8. About one-fifth of the watersheds had serious quality problems.









Reference:


Complete Test Preparation for the GED Test 2014 by Steck-Vaughn