GED GED Science GED Science Exam Online Training
GED GED Science Online Training
The questions for GED Science were last updated at Feb 08,2025.
- Exam Code: GED Science
- Exam Name: GED Science Exam
- Certification Provider: GED
- Latest update: Feb 08,2025
The battery of an automobile produces electricity from a chemical reaction. This electricity leaves the battery from a post called a terminal and is used in starting the engine. Sometimes a crusty deposit forms on the terminals, preventing the engine from starting. Simply cleaning off the deposit often restores the battery to operable condition.
Which effect does the deposit have on the battery terminals?
- A . conducts electricity
- B . improves spark plug firing
- C . causes hazardous sparks
- D . does not conduct electricity
- E . is caused by hard water
A cleaning agent contains ingredients listed in the figure below. Exhibit:
Which ingredient(s) would be the LEAST important in determining how well the cleaner can clean windows?
- A . ammonium hydroxide solution
- B . borax
- C . ammonium hydroxide and color
- D . borax and perfume
- E . perfume and color
The surface area of a log can be increased by splitting it into strips. Split wood with a larger surface area will burn much faster than a whole log. In much the same way, a sugar cube will dissolve much faster if its surface area is increased.
Which method will most increase the surface area of a sugar cube?
- A . Reshape the sugar granules into a ball.
- B . Divide the sugar cube into four square pieces.
- C . Break the sugar cube in half.
- D . Use a small round sugar tablet.
- E . Crush the cube into tiny fragments.
According to the information provided, what will happen to a straight metal bar when it is cooled?
- A . bend into a "u" shape
- B . become longer
- C . become more flexible
- D . become shorter
- E . remain the same
Each year, approximately 200 million tons of municipal solid waste are generated in the United States. Incineration (burning), recycling, landfills, reduce-reuse, and composting are all possible ways to reduce the amount of waste in this country. When selecting the best approach to this problem, officials must carefully consider the risks and benefits of each method.
Which disposal method will produce the most toxic air pollution?
- A . composting
- B . incineration
- C . landfills
- D . recycling
- E . reduce-reuse
If 1970―1997 trends continue, which statement could be predicted from the bar graph?
- A . Use of oil for energy production will decrease.
- B . Use of hydroelectric energy will increase.
- C . Use of coal for energy production will increase.
- D . Use of nuclear power will remain the same.
- E . Total energy use will decrease in the future.
Hot vapor from a cup of coffee forms droplets of liquid when the vapor passes over a cool spoon.
This condensation action is similar to which of the following?
- A . raindrops falling from the sky
- B . hail forming within a storm cloud
- C . a bathroom mirror fogging up
- D . steam rising from boiling water
- E . cold spray coming from a showerhead
A food chain is a way of showing food relationships among a group of organisms that share an environment. The illustration at the left represents a freshwater food chain.
What is most likely to happen if the supply of large fish in a pond is reduced by extensive fishing?
- A . Humans will eat more algae.
- B . The amount of algae will increase.
- C . The population of small fish will increase.
- D . Small fish will get smaller.
- E . Large fish begin to eat algae.
DDT is a toxic substance. The illustration below lists DDT levels in various organisms.
Which statement best explains why the amount of DDT is higher in the eagle than in the otherorganisms? Exhibit:
- A . DDT is more poisonous to birds than to other living organisms.
- B . The DDT in the small bird passes directly to the eagle.
- C . The eagle has a diet of animals and plants.
- D . DDT becomes more concentrated as it passes through the food web.
- E . Mice are the only animals on which the eagles feed.
Exhibit:
Based on the information and diagram, which statement represents the best observation?
- A . is the same during the entire time period
- B . slows down gradually
- C . is irregular during the time period
- D . speeds up during the time period
- E . is affected by the number of windows in the building
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