GED-Science 無料問題集「GED Science」
Bacteria are one-celled organisms that grow and reproduce in the right conditions. They
reproduce by dividing in half and can divide in as little as every 20 minutes. The graph below describes how the growth of bacteria actually changes over time.
Which section of the graph shows what happens when the food supply is used up and the bacteria are dying?
reproduce by dividing in half and can divide in as little as every 20 minutes. The graph below describes how the growth of bacteria actually changes over time.
Which section of the graph shows what happens when the food supply is used up and the bacteria are dying?
正解：A
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The digestive tract of an animal that eats meat is about four times the length of the animal's body. In an animal that eats plants, the digestive tract is about twenty times the length of the animal's body.
Which animal would be expected to have the longest digestive tract relative to its body length?
Which animal would be expected to have the longest digestive tract relative to its body length?
正解：C
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Hurricanes are huge storms that form over a warm ocean. The center of a hurricane is the calmest region and is called the "eye." The strongest winds and heaviest rains are in an areacalled the "eye wall." The graph at the left represents the top wind speeds in the eye wall of three hurricanes that hit the United States.
Which statement is the best interpretation of the graph?
Which statement is the best interpretation of the graph?
正解：D
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Temperature is a measure of the average kinetic energy (motion) of individual particles in a substance. Thermal energy is the total combined energy of all the particles. When
comparing samples of the same substance, the total thermal energy of the sample depends on its temperature and mass.
Cheryl fills five containers with different amounts of the same substance as shown in the diagram below. The contents of all five containers are kept at the same 50(degrees) Celsius temperature.
To remain buoyant, an object must displace a mass of liquid equal to its own mass. Shown below are five identical corks each placed in small vials, containing equal volumes of liquids that have different salt concentrations. The solution with the highest concentration of salt will have the highest mass and will require the least displacement of liquid.
Based on the information and diagram, which vial has the greatest concentration of salt?
comparing samples of the same substance, the total thermal energy of the sample depends on its temperature and mass.
Cheryl fills five containers with different amounts of the same substance as shown in the diagram below. The contents of all five containers are kept at the same 50(degrees) Celsius temperature.
To remain buoyant, an object must displace a mass of liquid equal to its own mass. Shown below are five identical corks each placed in small vials, containing equal volumes of liquids that have different salt concentrations. The solution with the highest concentration of salt will have the highest mass and will require the least displacement of liquid.
Based on the information and diagram, which vial has the greatest concentration of salt?
正解：A
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Daily weather patterns are often the result of temperature differences, patterns of air flow, relative humidity, condensation, or evaporation. A warm front forms when a warmer air mass pushes a cold air mass ahead of it. Precipitation over a large area can occur along a warm front.
Based on this information and diagram, what would most likely happen if a mass of hot, humid air encountered a colder air mass in the northern portion of Earth's surface?
Based on this information and diagram, what would most likely happen if a mass of hot, humid air encountered a colder air mass in the northern portion of Earth's surface?
正解：A
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There is more vegetation present in areas with mild climates than in areas with harsh climates. Pollen analysis is one of the tools used to study past climates. The diagram at the left shows information about sediments of the same age, sampled from different parts of the world.
Which of the sediments most likely represents the area with the mildest climate?
Which of the sediments most likely represents the area with the mildest climate?
正解：B
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Plant and animal cells have some structural differences. One of these differences is a rigid structure that helps support and protect plant cells. The diagram below shows a plant and an animal cell.
Wood, made up of plant cells, is a strong construction material. Based on the information and diagram, which structure enables plant cells to be used as construction material?
Wood, made up of plant cells, is a strong construction material. Based on the information and diagram, which structure enables plant cells to be used as construction material?
正解：B
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Earth's system is observed by noting changes and interactions of the oceans, land, the atmosphere, and organisms. Some of these changes and interactions happen daily, while others take place over long periods of time.
Which of the following changes and interactions happen on a daily basis?
Which of the following changes and interactions happen on a daily basis?
正解：A
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