GED Science 認定 GED-Science 試験問題:
1. The atmosphere exerts a certain amount of air pressure on all objects on Earth. The air pressure at a specific location varies with the temperature, the distance above sea level, the amount of air present, and other factors.
In the demonstration above, a student places two ounces of water in an empty 12-ounce soda can and heats it on a hot plate until steam forms. Then the can is immediately inverted into a pan of cold water. The steam inside the can condensed, creating a vacuum. Almost immediately, the can collapses.
Based on the information, which statement provides the best explanation for this occurrence?
A) The water crushed the can because water is more dense than aluminum.
B) The steam expanded the can so much that it split open.
C) The can melted on the hot plate and collapsed in the water.
D) The can collapsed because the air pressure was less inside the can.
E) The steam weakened the walls of the can, resulting in its collapse.
2. When choosing an organism to study, geneticists prefer the following characteristics. The organism should be small, have a fast growth rate, and have the ability to produce many offspring.
Based on these criteria, which plant would be LEAST useful for a genetic study?
A) grass plant
B) oak tree
C) moss
D) tomato plant
E) dandelion
3. During an electrical storm, a lightning flash is seen before the sound of thunder that it generated can be heard. The farther a person is from the storm, the greater the time interval between the light flash and the arrival of the sound. Which of the following statements best explains this phenomenon?
A) Electricity can travel rapidly in the Earth's atmosphere.
B) Light travels faster than sound.
C) Lightning consists of a flash of light followed by a loud sound.
D) Sound travels somewhat faster than light.
E) The density of the atmosphere decreases the speed of light.
4. Which is a useful way of reducing acidification of a lake?
A) adding calcium compounds to the lake water
B) stocking the lake with large fish
C) increasing acid emissions from a local power plant
D) adding phosphates to the surrounding soil
E) decreasing the lake's plants
5. Warren is a small town built on the edge of a river. Upstream from Warren, there is a factory on one side of the river and a large farm on the other side. Recently, a resident of Warren discovered a large number of dead fish on the bank of the river, as shown below.
The residents of Warren want to know why so many fish died in that location.
Which would be the most realistic first step to take in determining the cause of the fish kill?
A) Close the factory, the farm, and all of the other businesses in the town.
B) Perform tests on the river water to determine the types and amounts of pollutants in the water.
C) Evacuate the town of all its residents.
D) Divert the river so that it no longer flows past Warren.
E) Measure the distance between the fish kill, the town of Warren, the farm, and the factory.
質問と回答：
| 質問 # 1 正解： D | 質問 # 2 正解： B | 質問 # 3 正解： B | 質問 # 4 正解： A | 質問 # 5 正解： B |
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