Free GED-Science Questions for GED Science GED-Science Exam as PDF & Practice Test Engine

A scientist uses a laboratory mouse to complete an experiment involving a maze. During each trial, the mouse runs through the maze, and the scientist counts the number of errors that the mouse makes before it reaches the end of the maze. The mouse goes through the maze a total of six times. The scientist's data are shown in the table at the left.

Based on the information and graph, which statement is the best interpretation?

Water quality is affected when nutrients such as nitrogen and phosphorus drain into streams and lakes. These compounds promote the growth of algae, which, when they die and decay, may result in the depletion of oxygen in the water. The chart below indicates the relative content of nitrogen and phosphorus in several substances.

Based on the information and chart, which situation is LEAST likely to lead to an excess of nitrogen and phosphorus in the water?

Refer to the following information and table.
The table below indicates the results of a preliminary study of a flu medication (RX). The subjects were randomly selected groups of males, ages 50-70, residing in a North American city with a population of more than one million people.
Exhibit:

Based on the data in the chart and the information provided, which treatment appeared to be most effective in treating the early stages of the flu in these subjects?

Atoms in gases are in constant motion and in constant collision with each other. When atoms of A and B collide, they react to form a product P.

What is the effect of increasing pressure on the gases?

One wavelength is the distance from one crest of a wave to the next crest or from a trough (low point of a wave) to the next trough. The frequency of a wave is the number of crests that pass any given point each second.
Which of the following waves demonstrates the LOWEST frequency?

A)

B)

C)

D)

E)

Exhibit:

Based on the information and diagram, which slide shows the most positive response of paramecia to a stimulus?

If 1970-1997 trends continue, which statement could be predicted from the bar graph?

Many years ago, beavers were introduced to a region of California that they had not previously inhabited. Forty years later, the beaver population had grown so much that a cluster of aspen trees used by the beavers for food and building materials inside the national forest became endangered. The beavers were also interfering with the water systems.
In retrospect, how would biologists most likely evaluate the impact of the introduction of the beaver?

For which activity is an environmental scientist likely to be qualified?

Which conclusion is best supported by the graph? Exhibit:

Exhibit

Simple machines reduce the amount of force needed to do work such as lifting an object. The simple machine shown below is a lever. A downward force on one end of a lever moves the other end up. A playground seesaw or a crowbar are common examples of levers.
The amount of force needed to raise the box sitting on the lever depends on where the force is applied. The more distance between the weight and the force, the smaller the force that is needed.

In the diagram on the left, where would the LEAST amount of force be needed to move the weighted box?

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?